Fintepla fenfluramine 2.2 mg/mL Solution — NDC 43376-322-36 (Billing 43376-0322-36)
This is a package of Fintepla fenfluramine 2.2 mg/mL Solution from UCB, Inc., marketed since Jul 2020 and currently FDA-listed. It is the main listing for this product, which comes in 2 package sizes.
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification
- GSN (GCN sequence number): 081237
- GCN: 48284
- GPI-14 (Medi-Span): 72600028102020
- HICL (First Databank): 002116
- AHFS class code: 28:12.92.00
- RxCUI (RxNorm): 2381138
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
RxNorm drug class
This medicine belongs to the Centrally acting antiobesity products class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
- Fintepla treats seizures from two rare epilepsy types, Dravet syndrome and Lennox-Gastaut syndrome. It's approved for people 2 years and older.
- It's a liquid taken twice a day, with or without food. Use the oral syringe from the pharmacy, because a kitchen spoon isn't accurate. It can also go through a feeding tube. Throw...
- Fenfluramine can cause heart valve disease and high blood pressure in the lung arteries. Echocardiograms are done before you start, every 6 months, and 3 to 6 months after your las...
- Lower appetite, weight loss, sleepiness, diarrhea, constipation, vomiting and tiredness are common. Call your doctor for breathing trouble, swelling, mood changes, suicidal thought...
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Fenfluramine — tap one for details:
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per mL | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | $55.42 | $19,951.16 / 360 ml |
| Medicare drug plans payPart D · Q2 2026 | $57.38 | $20,657.99 / 360 ml |
Where does this data come from?
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · through Q1 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 43376-0322-30 43376-322-30 | 1 BOTTLE, PLASTIC in 1 CARTON / 30 mL in 1 BOTTLE, PLASTIC | 2020-07-15 | — | Active |
| 43376-0322-36 You're viewing this Main listing | 1 BOTTLE, PLASTIC in 1 CARTON / 360 mL in 1 BOTTLE, PLASTIC | 2020-07-15 | — | Active |
In Medicaid, this is the most-dispensed pack of this product — about 100% of fills over the last four reported quarters. See all packs ↓
Pack size FAQ
What quantity is in this package?
What NDC number is used to bill for this package of Fintepla fenfluramine 2.2 mg/mL Solution?
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Fintepla 2.2 mg/mLthis 43376-0322-36 | UCB, | 1 bottle | — | — | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Sep 3, 2026
- CMS NADAC weekly file
Availability & generic status
We did not find an FDA-approved generic match for this exact strength, form and route. Patent/protection dates below may affect future generic timing.
Why the date isn’t exact: Generic timing can change because patents may be challenged, settled, licensed, added, removed, or worked around with a narrower label — and FDA approval does not always mean a pharmacy can get the generic today.
🛈 What do these terms mean?
- Patent
- Legal protection listed in the Orange Book that may delay generic approval or launch. Issued by the U.S. Patent & Trademark Office.
- Substance patent
- Covers the active drug molecule itself — the hardest to design around. A generic generally can’t launch until it expires.
- Formulation (product) patent
- Covers a specific formulation or dosage form. A generic can sometimes work around it with a different formulation.
- Method-of-use patent
- A patent covering one specific approved use of the drug — not necessarily the whole molecule. A generic can sometimes launch with a “skinny label” that carves out the protected use and keeps the others.
- Skinny label
- A generic label that omits a still-patented use when the FDA allows it — letting a generic reach the market for the unprotected uses.
- Exclusivity
- FDA-granted marketing protection, separate from patents — e.g. 5-yr new chemical entity, 7-yr orphan drug, or a +6-month pediatric extension.
- Paragraph IV
- A generic applicant’s formal challenge to a listed patent. It can potentially lead to earlier generic entry, but often involves litigation or a settlement.
- RLD / RS
- Reference Listed Drug — the brand product the FDA uses as the reference for generic applications. Reference Standard — the product the FDA expects generics to compare against in bioequivalence testing.
- TE / AB rating
- FDA therapeutic-equivalence rating. An AB rating generally means the FDA considers a generic therapeutically equivalent to — and substitutable for — the brand.
- LOE (loss of exclusivity)
- The latest patent or exclusivity currently listed — the loss-of-exclusivity / latest-listed-protection date shown on this page. Paragraph-IV challenges and settlements can move the real date earlier; FDA approval and a manufacturer’s decision to market can move it later.
Built from the FDA Orange Book. The bars above are scaled to each protection’s expiry; the red LOE marker is the last one to lapse.
| Patent | Type | Use code | Expires |
|---|---|---|---|
| US 9603815 ↗ | Method of use | U-2858 | May 3, 2033 |
| US 9549909 ↗ | Method of use | U-2858 | May 3, 2033 |
| US 10452815 ↗ delist req. | Method of use | U-2859 | Jun 29, 2038 |
| US 9610260 ↗ | Method of use | U-2858 | May 3, 2033 |
| US 9603814 ↗ | Method of use | U-2858 | May 3, 2033 |
| US 10603290 ↗ | Method of use | U-2861 | Aug 2, 2037 |
| US 10478442 ↗ | Method of use | U-2860 | May 3, 2033 |
| US 10478441 ↗ | Method of use | U-2860 | May 3, 2033 |
| US 12097206 ↗ | Method of use | U-4013 | May 3, 2033 |
| US 11759440 ↗ | Method of use | U-3694 | Aug 2, 2037 |
| US 11040018 ↗ | Method of use | U-2861 | Aug 2, 2037 |
| US 11406606 ↗ | Method of use | U-3406 | Aug 2, 2037 |
| US 11406606 ↗ | Method of use | U-3407 | Aug 2, 2037 |
| US 11786487 ↗ | Method of use | U-3733 | Aug 2, 2037 |
| US 10603290 ↗ | Method of use | U-3347 | Aug 2, 2037 |
| US 11040018 ↗ | Method of use | U-3347 | Aug 2, 2037 |
| US 10947183 ↗ | Drug substance | — | Dec 20, 2036 |
| US 11759440*PED ↗ | Drug product | — | Feb 2, 2038 |
| US 11406606*PED ↗ | Drug product | — | Feb 2, 2038 |
| US 9603815*PED ↗ | Drug product | — | Nov 3, 2033 |
| US 9549909*PED ↗ | Drug product | — | Nov 3, 2033 |
| US 10452815*PED ↗ | Drug product | — | Dec 29, 2038 |
| US 9610260*PED ↗ | Drug product | — | Nov 3, 2033 |
| US 9603814*PED ↗ | Drug product | — | Nov 3, 2033 |
| US 10603290*PED ↗ | Drug product | — | Feb 2, 2038 |
| US 10478442*PED ↗ | Drug product | — | Nov 3, 2033 |
| US 10478441*PED ↗ | Drug product | — | Nov 3, 2033 |
| US 11040018*PED ↗ | Drug product | — | Feb 2, 2038 |
| US 12097206*PED ↗ | Drug product | — | Nov 3, 2033 |
| US 11786487*PED ↗ | Drug product | — | Feb 2, 2038 |
| US 10947183*PED ↗ | Drug product | — | Jun 20, 2037 |
| Code | What it grants | Expires |
|---|---|---|
| ODE-312 | Orphan Drug Exclusivity (7-year) | Jun 25, 2027 |
| ODE-393 | Orphan Drug Exclusivity (7-year) | Mar 25, 2029 |
| PED | Pediatric Exclusivity (+6 months) | Dec 25, 2027 |
| PED | Pediatric Exclusivity (+6 months) | Sep 25, 2029 |
Is there a generic version of FINTEPLA 2.2 MG/ML SOLUTION?
The FDA approved a generic — why can’t I get it at my pharmacy yet?
Why do different websites show different generic release dates?
What does “FDA listed” mean?
What does a patent or protection date mean here?
What does “current Orange Book estimate” mean?
Can a generic come out before the last patent expires?
Can a generic come out after the listed dates?
What is the difference between patents and exclusivity?
Why are there multiple patent dates?
Where does this data come from?
- FDA Orange Book · refreshed Sep 3, 2026
What it looks like
Where does this data come from?
- FDA label on DailyMed · label index refreshed Oct 1, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
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UNII XF417D3PSL
Anhydrous citric acid is a sour, crystalline powder derived from citric acid with water removed. In medicines, it acts as a buffer to control pH, adds tartness to improve taste, and helps tablets disintegrate.
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UNII 14255EXE39
Ethylparaben is a preservative, a chemical that stops bacteria and mold from growing in the medicine. It keeps the product safe and effective throughout its shelf life.
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UNII S38J6RZN16
Hydroxyethyl cellulose is a plant-derived thickening agent made from cellulose. In medicines, it acts as a binder to hold ingredients together, a thickener to adjust product texture, and a film-former to create smooth coatings on tablets.
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UNII A2I8C7HI9T
Methylparaben is a preservative derived from benzoic acid that prevents growth of bacteria, fungi, and mold in medicines. It extends the product's shelf life and maintains safety during storage.
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UNII EE90ONI6FF
Potassium citrate is a salt derived from citric acid and potassium. In medicines, it acts as a buffer to adjust and maintain the pH balance of the product, helping keep it stable and palatable.
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UNII 96K6UQ3ZD4
Sucralose is a synthetic sweetener made from sugar. It's added to medicines to improve taste without adding calories, helping make bitter or unpleasant-tasting drugs easier to take.
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UNII 059QF0KO0R
Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.
7 inactive ingredients listed in the exact product block matched to this NDC.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
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Manufacturer & labeler
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🚨 Boxed Warning ▾
WARNING: VALVULAR HEART DISEASE and PULMONARY ARTERIAL HYPERTENSION FINTEPLA can cause valvular heart disease and pulmonary arterial hypertension [see Warnings and Precautions (5.1) ]. Echocardiogram assessments are required before, during, and after treatment with FINTEPLA. The benefits versus the risks of initiating or continuing FINTEPLA must be considered, based on echocardiogram findings [see Dosage and Administration (2.1 , 2.6 ) and Warnings and Precautions (5.1) ].
Because of the risks of valvular heart disease and pulmonary arterial hypertension, FINTEPLA is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the FINTEPLA REMS [see Warnings and Precautions (5.2) ]. WARNING: VALVULAR HEART DISEASE and PULMONARY ARTERIAL HYPERTENSION See full prescribing information for complete boxed warning. FINTEPLA can cause valvular heart disease and pulmonary arterial hypertension.
( 5.1 ) Echocardiogram assessments are required before, during, and after treatment with FINTEPLA. ( 2.1 , 2.6 , 5.1 ) FINTEPLA is available only through a restricted program called the FINTEPLA REMS. ( 5.2 )
🎯 Indications and Usage ▾
1 INDICATIONS AND USAGE FINTEPLA is indicated for the treatment of seizures associated with Dravet syndrome (DS) and Lennox-Gastaut syndrome (LGS) in patients 2 years of age and older. FINTEPLA is indicated for the treatment of seizures associated with Dravet syndrome and Lennox-Gastaut syndrome in patients 2 years of age and older. ( 1 )
⏱️ Dosage and Administration ▾
2 DOSAGE AND ADMINISTRATION FINTEPLA is to be administered orally and may be taken with or without food. ( 2.2 ) Dravet Syndrome The initial starting and maintenance dosage is 0.1 mg/kg twice daily, which can be increased weekly based on efficacy and tolerability. ( 2.2 ) The maximum daily maintenance dosage of FINTEPLA is 0.35 mg/kg twice daily (maximum daily dosage of 26 mg).
( 2.2 ) Lennox-Gastaut Syndrome The initial starting dosage is 0.1 mg/kg twice daily, which should be increased weekly based on tolerability. ( 2.2 ) The recommended maintenance dosage of FINTEPLA is 0.35 mg/kg twice daily (maximum daily dosage of 26 mg). ( 2.2 ) Dravet Syndrome and Lennox-Gastaut Syndrome Dose adjustment is required in patients taking concomitant stiripentol plus clobazam: the maximum daily maintenance dosage of FINTEPLA is 0.2 mg/kg twice daily (maximum daily dosage of 17 mg).
( 2.2 , 2.3 , 2.4 , 7.1 ) Dosage adjustment is recommended in patients: Taking strong CYP1A2 or CYP2D6 inhibitors ( 2.3 , 7.1 ) With severe renal impairment ( 2.4 , 8.6 ) With mild, moderate, and severe hepatic impairment ( 2.5 , 8.7 )
2.1Assessments Prior to Initiating FINTEPLA Prior to starting treatment with FINTEPLA, obtain an echocardiogram assessment to evaluate for valvular heart disease and pulmonary arterial hypertension [see Dosage and Administration (2.6) and Warnings and Precautions (5.1) ] .
2.2Dosing Information FINTEPLA is to be administered orally and may be taken with or without food. Dravet Syndrome The initial starting and maintenance dosage for patients with Dravet syndrome is 0.1 mg/kg twice daily, which can be increased weekly based on efficacy and tolerability. Table 1 provides the recommended titration schedule, if needed.
Patients with Dravet syndrome not on concomitant stiripentol who are tolerating FINTEPLA at 0.1 mg/kg twice daily and require further reduction of seizures may benefit from a dosage increase up to a maximum recommended maintenance dosage of 0.35 mg/kg twice daily (maximum daily dosage of 26 mg). Patients with Dravet syndrome taking concomitant stiripentol plus clobazam who are tolerating FINTEPLA at 0.1 mg/kg twice daily and require further reduction of seizures may benefit from a dosage increase up to a maximum recommended maintenance dosage of 0.2 mg/kg twice daily (maximum daily dosage of 17 mg) [see Drug Interactions (7.1) ].
Lennox-Gastaut Syndrome The initial starting dosage for patients with Lennox-Gastaut syndrome is 0.1 mg/kg twice daily, which should be increased weekly based on tolerability. Table 1 provides the recommended titration schedule. Patients with Lennox-Gastaut syndrome not on concomitant stiripentol who are tolerating FINTEPLA should be titrated to the recommended maintenance dosage of 0.35 mg/kg twice daily (maximum daily dosage of 26 mg).
Patients with Lennox-Gastaut syndrome taking concomitant stiripentol plus clobazam who are tolerating FINTEPLA should be titrated to the recommended maintenance dosage of 0.2 mg/kg twice daily (maximum daily dosage of 17 mg) [see Drug Interactions (7.1) ]. Table 1: FINTEPLA Recommended Titration Schedule For patients not on concomitant stiripentol in whom a more rapid titration is warranted, the dose may be increased every 4 days. Without concomitant stiripentol With concomitant stiripentol plus clobazam Weight-based Dosage To calculate the dose volume: Weight (kg) × Weight-based dosage (mg/kg) ÷ 2.2 mg/mL = mL dose to be taken twice daily Maximum Total Daily Dosage For maximum dosage with concomitant use of strong CYP1A2 or CYP2D6 inhibitors, in patients with severe renal impairment, or in patients with hepatic impairment see Dosage and Administration 2.3, 2.4, 2.5.
Weight-based Dosage Maximum Total Daily Dosage Initial Dosage For patients with Dravet syndrome, dosage may be increased based on clinical response to the maximum recommended dosage, as needed. 0.1 mg/kg twice daily 26 mg 0.1 mg/kg twice daily 17 mg Day 7 0.2 mg/kg twice daily 26 mg 0.15 mg/kg tw… [Excerpted — this section continues on DailyMed.]
💊 Dosage Forms and Strengths ▾
3 DOSAGE FORMS AND STRENGTHS Oral solution: 2.2 mg/mL fenfluramine as a clear, colorless, cherry flavored liquid. Oral solution: 2.2 mg/mL fenfluramine ( 3 )
⛔ Contraindications ▾
4 CONTRAINDICATIONS FINTEPLA is contraindicated in patients with: Hypersensitivity to fenfluramine or any of the excipients in FINTEPLA [see Description (11) ] Concomitant use, or within 14 days of the administration, of monoamine oxidase inhibitors because of an increased risk of serotonin syndrome [see Warnings and Precautions (5.7) ] Hypersensitivity to fenfluramine or any of the excipients in FINTEPLA ( 4 ) Within 14 days of the administration of monoamine oxidase inhibitors due to an increased risk of serotonin syndrome ( 4 )
⚠️ Warnings and Cautions ▾
5 WARNINGS AND PRECAUTIONS Decreased Appetite and Decreased Weight: Advise patients that FINTEPLA can cause decreased appetite and decreased weight. ( 5.3 ) Somnolence, Sedation, and Lethargy: Monitor for somnolence and sedation. Advise patients not to drive or operate machinery until they have gained sufficient experience on FINTEPLA.
( 5.4 ) Suicidal Behavior and Ideation: Monitor patients for suicidal behavior and thoughts. ( 5.5 ) Withdrawal of Antiepileptic Drugs: FINTEPLA should be gradually withdrawn to minimize the risk of increased seizure frequency and status epilepticus. ( 5.6 ) Serotonin Syndrome: Advise patients that serotonin syndrome is a potentially life-threatening condition and may occur with FINTEPLA, particularly with concomitant administration of FINTEPLA with other serotonergic drugs.
( 5.7 ) Increase in Blood Pressure: Monitor blood pressure during treatment. ( 5.8 ) Glaucoma: Discontinue therapy in patients with acute decrease in visual acuity or ocular pain. ( 5.9 )
5.1Valvular Heart Disease and Pulmonary Arterial Hypertension FINTEPLA can cause valvular heart disease (VHD) and pulmonary arterial hypertension (PAH). There is a known association between serotonergic drugs with 5-HT2B receptor agonist activity, including fenfluramine (the active ingredient in FINTEPLA), and valvular heart disease and pulmonary arterial hypertension. Although no patients receiving FINTEPLA developed valvular heart disease or pulmonary arterial hypertension in clinical trials for DS and LGS of up to 3 years in duration, cases of valvular heart disease and pulmonary arterial hypertension have been reported during use of FINTEPLA in the postmarketing setting [see Boxed Warning and Adverse Reactions (6.1) ] .
Because of this risk, cardiac monitoring is required prior to starting treatment, during treatment, and after treatment with FINTEPLA concludes . Cardiac monitoring via echocardiogram can identify evidence of valvular heart disease and pulmonary arterial hypertension prior to a patient becoming symptomatic, aiding in early detection of these conditions. Monitoring Prior to starting treatment, patients must undergo an echocardiogram to evaluate for valvular heart disease and pulmonary arterial hypertension.
Echocardiograms should be repeated every 6 months, and once 3-6 months post-treatment with FINTEPLA. The prescriber must consider the benefits versus the risks of initiating or continuing treatment with FINTEPLA if any of the following signs are observed via ECHO: Valvular abnormality or new abnormality via echocardiogram. VHD as indicated by mild or greater aortic regurgitation or moderate or greater mitral regurgitation, with additional characteristics of VHD (e.g., valve thickening or restrictive valve motion).
PAH as indicated by elevated right heart/pulmonary artery pressure (PASP > 35 mm Hg). FINTEPLA is available only through a restricted program under a REMS [see Warnings and Precautions (5.2) ].
5.2FINTEPLA REMS Program FINTEPLA is available only through a restricted distribution program called the FINTEPLA REMS program because of the risk of valvular heart disease and pulmonary arterial hypertension [see Warnings and Precautions (5.1) ]. Notable requirements of the FINTEPLA REMS Program include: Prescribers must be certified by enrolling in the FINTEPLA REMS program. Prescribers must counsel patients receiving FINTEPLA about the risk of valvular heart disease and pulmonary arterial hypertension, how to recognize signs and symptoms of valvular heart disease and pulmonary arterial hypertension, the need for baseline (pretreatment) and periodic cardiac monitoring via echocardiogram during FINTEPLA treatment, and cardiac monitoring after FINTEPLA treatment.
Patients must enroll in the REMS program and comply with ongoing monitoring requirements [see Warnings and Precautions (5.1) ]. The pharmacy must be certified by enrolling in the REMS program and must only dispense to patients who are authorized to receive F… [Excerpted — this section continues on DailyMed.]
🤒 Adverse Reactions ▾
6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in labeling: Valvular Heart Disease and Pulmonary Arterial Hypertension [see Warnings and Precautions (5.1) ] Decreased Appetite and Decreased Weight [see Warnings and Precautions (5.3) ] Somnolence, Sedation, and Lethargy [see Warnings and Precautions (5.4) ] Suicidal Behavior and Ideation [see Warnings and Precautions (5.5) ] Withdrawal of Antiepileptic Drugs [see Warnings and Precautions (5.6) ] Serotonin Syndrome [see Warnings and Precautions (5.7) ] Increase in Blood Pressure [see Warnings and Precautions (5.8) ] Glaucoma [see Warnings and Precautions (5.9) ] The most common adverse reactions (incidence at least 10% and greater than placebo) in patients with Dravet syndrome were decreased appetite; somnolence, sedation, lethargy; diarrhea; constipation; abnormal echocardiogram; fatigue, malaise, asthenia; ataxia, balance disorder, gait disturbance; blood pressure increased; drooling, salivary hypersecretion; pyrexia; upper respiratory tract infection; vomiting; decreased weight; fall; status epilepticus.
( 6.1 ) The most common adverse reactions (incidence at least 10% and greater than placebo) in patients with Lennox-Gastaut syndrome were diarrhea; decreased appetite; fatigue; somnolence; vomiting. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact UCB, Inc. at 1-844-599-2273 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
6.1Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. In controlled and uncontrolled trials in patients with Dravet syndrome (DS), 341 patients were treated with FINTEPLA, including 312 patients treated for more than 6 months, 284 patients treated for more than 1 year, and 138 patients treated for more than 2 years.
In controlled and uncontrolled trials in patients with Lennox-Gastaut syndrome (LGS), 262 patients were treated with FINTEPLA, including 219 patients treated for more than 6 months, 172 patients treated for more than 1 year, and 127 patients treated for more than 2 years. Dravet Syndrome In placebo-controlled trials of patients with DS taking concomitant standard of care AEDs, 122 patients were treated with FINTEPLA and 84 patients received placebo [see Clinical Studies (14.1) ] . The duration of treatment in these trials was 16 weeks (Study 1) or 17 weeks (Study 2).
In Study 1 and Study 2, the mean age was 9 years (range 2 to 19 years) and approximately 46% of patients were female and 74% were White. All patients were receiving at least one other AED. In Study 1 and Study 2, the rates of discontinuation as a result of any adverse reaction were 13%, 0%, and 7% for patients treated with FINTEPLA 0.7 mg/kg/day, 0.2 mg/kg/day, and 0.4 mg/kg/day in combination with stiripentol, respectively, compared to 6% for patients on placebo.
The most frequent adverse reaction leading to discontinuation in the patients treated with any dose of FINTEPLA was somnolence (3%). The most common adverse reactions that occurred in patients treated with FINTEPLA (incidence at least 10% and greater than placebo) were decreased appetite; somnolence, sedation, lethargy; diarrhea; constipation; abnormal echocardiogram; fatigue, malaise, asthenia; ataxia, balance disorder, gait disturbance; blood pressure increased; drooling, salivary hypersecretion; pyrexia; upper respiratory tract infection; vomiting; decreased weight; fall; status epilepticus.
Table 4 lists the adverse reactions that were reported in 5% or more of patients treated with FINTEPLA and at a rate greater than those on placebo during the titration and maintenance phases of Study 1 and Study 2. Table 4: Adverse Reactions in 5% or More of Patients Treated with FINTEPLA and Greater Than Placebo in Placebo-Controlled Tri… [Excerpted — this section continues on DailyMed.]
🔄 Drug Interactions ▾
7 DRUG INTERACTIONS Dose adjustment is required for patients taking stiripentol plus clobazam. ( 2.2 , 2.3 , 7.1 ) Strong CYP1A2 or CYP2D6 inhibitors: a dose adjustment is recommended ( 2.3 , 7.1 ) Strong CYP1A2, CYP2B6, or CYP3A4 inducers: it is recommended to avoid coadministration with FINTEPLA. If coadministration is necessary, consider a FINTEPLA dosage increase. ( 7.1 )
7.1Effect of Other Drugs on FINTEPLA Stiripentol Plus Clobazam Coadministration of FINTEPLA with stiripentol plus clobazam, with or without valproate, increases fenfluramine plasma concentrations [see Clinical Pharmacology (12.3) ]. If FINTEPLA is coadministered with stiripentol plus clobazam, the maximum daily dosage of FINTEPLA is 0.2 mg/kg twice daily (maximum daily dosage of 17 mg) [see Dosage and Administration (2.2) ] . Strong CYP1A2, CYP2B6, or CYP3A Inducers Coadministration of FINTEPLA with strong CYP1A2, CYP2B6, or CYP3A inducers will decrease fenfluramine plasma concentrations, which may lower the efficacy of FINTEPLA [see Clinical Pharmacology (12.3) ] .
It is recommended to avoid coadministration of strong CYP1A2, CYP2B6 or CYP3A inducers. If coadministration of a strong CYP1A2, CYP2B6, or CYP3A inducer with FINTEPLA is necessary, monitor the patient for reduced efficacy and consider increasing the dosage of FINTEPLA as needed; however, do not exceed the maximum daily dosage of FINTEPLA [see Dosage and Administration (2.2) ]. If a strong CYP1A2, CYP2B6, or CYP3A inducer is discontinued during maintenance treatment with FINTEPLA, consider gradual reduction in the FINTEPLA dosage to the dose administered prior to initiating the inducer [see Warnings and Precautions (5.6) ].
Strong CYP1A2 or CYP2D6 Inhibitors Coadministration of FINTEPLA with strong CYP1A2 or CYP2D6 inhibitors will increase fenfluramine plasma concentrations [see Clinical Pharmacology (12.3) ] . If FINTEPLA is coadministered with strong CYP1A2 or CYP2D6 inhibitors, the maximum daily dosage of FINTEPLA is 20 mg [see Dosage and Administration (2.3) ]. If a strong CYP1A2 or CYP2D6 inhibitor is discontinued during maintenance treatment with FINTEPLA, consider gradual increase in the FINTEPLA dosage to the dose recommended without CYP1A2 or CYP2D6 inhibitors; however, do not exceed the maximum daily dosage of FINTEPLA [see Dosage and Administration (2.2) ].
If FINTEPLA is coadministered with stiripentol and a strong CYP1A2 or CYP2D6 inhibitor, do not exceed the maximum daily dosage of FINTEPLA of 17 mg [see Dosage and Administration (2.3) ].
7.2Effects of Serotonin Receptor Antagonists Cyproheptadine and potent 5-HT1A, 5-HT1D, 5-HT2A, and 5-HT2C serotonin receptor antagonists may decrease the efficacy of FINTEPLA. If cyproheptadine or potent 5--HT1A, 5--HT1D, 5-HT2A, or 5-HT2C serotonin receptor antagonists are coadministered with FINTEPLA, patients should be monitored appropriately.
7.3Serotonergic Drugs Concomitant administration of FINTEPLA and drugs (e.g., SSRIs, SNRIs, TCAs, MAO inhibitors, trazodone, etc.), over-the-counter medications (e.g., dextromethorphan), or herbal supplements (e.g., St. John's Wort) that increase serotonin may increase the risk of serotonin syndrome [see Warnings and Precautions (5.7) ]. Concomitant use of FINTEPLA is contraindicated within 14 days of taking MAOIs.
Use FINTEPLA with caution in patients taking other medications that increase serotonin.
👥 Use in Specific Populations ▾
8 USE IN SPECIFIC POPULATIONS Pregnancy: Based on animal data, may cause fetal harm ( 8.1 )
8.1Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antiepileptic drugs (AEDs), such as FINTEPLA, during pregnancy. Encourage women who are taking FINTEPLA during pregnancy to enroll in the North American Antiepileptic Drug (NAAED) Pregnancy Registry by calling the toll-free number 1-888-233-2334 or visiting http://www.aedpregnancyregistry.org. Risk Summary There are no data on FINTEPLA use in pregnant women.
Available data from epidemiologic studies with fenfluramine or dexfenfluramine are insufficient to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. FINTEPLA can cause decreased appetite and decreased weight [see Warnings and Precautions (5.3) ]; monitor for adequate weight gain during pregnancy. In animal studies, administration of fenfluramine throughout organogenesis (rat and rabbit) or throughout gestation and lactation (rat) resulted in adverse effects on development (fetal malformations, embryofetal and offspring mortality and growth impairment) in the presence of maternal toxicity at clinically relevant maternal plasma levels of fenfluramine and its major active metabolite (see Data ) .
All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Clinical Considerations Disease-associated Maternal and/or Embryofetal Risk Epilepsy, with or without exposure to antiepileptic drugs, has been associated with several adverse outcomes during pregnancy, including preeclampsia, preterm labor, antepartum and postpartum hemorrhage, placental abruption, poor fetal growth, prematurity, fetal death, and maternal mortality.
The risk of maternal or fetal injury may be greatest for patients with untreated or poorly controlled convulsive seizures. Women with epilepsy who become pregnant should not abruptly discontinue antiepileptic drugs, including FINTEPLA, due to the risk of status epilepticus or severe seizures, which may be life-threatening [see Warnings and Precautions (5.6) ]. Data Animal Data Oral administration of fenfluramine (0, 4.5, 8.6, or 34.6 mg/kg/day) to pregnant rats during organogenesis resulted in decreased fetal body weights and marked increases in fetal malformations (external, visceral, and skeletal) at the highest dose tested, which was associated with maternal toxicity.
At the no-effect dose (8.6 mg/kg/day) for adverse effects on embryofetal development in rats, maternal plasma exposures (AUC) of fenfluramine and norfenfluramine (the major metabolite) were approximately 2 and 5 times, respectively, those in humans at the maximum recommended human dose (MRHD) of 26 mg/day. Oral administration of fenfluramine (0, 4.3, 8.6, 13.0 mg/kg/day) to pregnant rabbits throughout organogenesis resulted in increased embryofetal mortality at all doses and increases in fetal malformations (external and skeletal) at the highest dose tested, which was associated with maternal toxicity.
A no-adverse-effect dose for adverse effects on embryofetal development in rabbits was not identified. At the lowest dose tested in rabbits (4.3 mg/kg/day), maternal plasma exposures of fenfluramine and norfenfluramine were lower than those in humans at the MRHD. Oral administration of fenfluramine (0, 4.3, 8.6, or 34.6 mg/kg/day) to female rats throughout gestation and lactation resulted in marked increases in stillborn pups and neonatal offspring deaths at the highest dose tested and delayed growth and reflex development during the pre- weaning period at all doses.
Maternal body weight gain was decreased at all doses during pregnancy and at the two highest doses during lactation. A no-effect dose for adv… [Excerpted — this section continues on DailyMed.]
🤰 Pregnancy ▾
8.1Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antiepileptic drugs (AEDs), such as FINTEPLA, during pregnancy. Encourage women who are taking FINTEPLA during pregnancy to enroll in the North American Antiepileptic Drug (NAAED) Pregnancy Registry by calling the toll-free number 1-888-233-2334 or visiting http://www.aedpregnancyregistry.org. Risk Summary There are no data on FINTEPLA use in pregnant women.
Available data from epidemiologic studies with fenfluramine or dexfenfluramine are insufficient to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. FINTEPLA can cause decreased appetite and decreased weight [see Warnings and Precautions (5.3) ]; monitor for adequate weight gain during pregnancy. In animal studies, administration of fenfluramine throughout organogenesis (rat and rabbit) or throughout gestation and lactation (rat) resulted in adverse effects on development (fetal malformations, embryofetal and offspring mortality and growth impairment) in the presence of maternal toxicity at clinically relevant maternal plasma levels of fenfluramine and its major active metabolite (see Data ) .
All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Clinical Considerations Disease-associated Maternal and/or Embryofetal Risk Epilepsy, with or without exposure to antiepileptic drugs, has been associated with several adverse outcomes during pregnancy, including preeclampsia, preterm labor, antepartum and postpartum hemorrhage, placental abruption, poor fetal growth, prematurity, fetal death, and maternal mortality.
The risk of maternal or fetal injury may be greatest for patients with untreated or poorly controlled convulsive seizures. Women with epilepsy who become pregnant should not abruptly discontinue antiepileptic drugs, including FINTEPLA, due to the risk of status epilepticus or severe seizures, which may be life-threatening [see Warnings and Precautions (5.6) ]. Data Animal Data Oral administration of fenfluramine (0, 4.5, 8.6, or 34.6 mg/kg/day) to pregnant rats during organogenesis resulted in decreased fetal body weights and marked increases in fetal malformations (external, visceral, and skeletal) at the highest dose tested, which was associated with maternal toxicity.
At the no-effect dose (8.6 mg/kg/day) for adverse effects on embryofetal development in rats, maternal plasma exposures (AUC) of fenfluramine and norfenfluramine (the major metabolite) were approximately 2 and 5 times, respectively, those in humans at the maximum recommended human dose (MRHD) of 26 mg/day. Oral administration of fenfluramine (0, 4.3, 8.6, 13.0 mg/kg/day) to pregnant rabbits throughout organogenesis resulted in increased embryofetal mortality at all doses and increases in fetal malformations (external and skeletal) at the highest dose tested, which was associated with maternal toxicity.
A no-adverse-effect dose for adverse effects on embryofetal development in rabbits was not identified. At the lowest dose tested in rabbits (4.3 mg/kg/day), maternal plasma exposures of fenfluramine and norfenfluramine were lower than those in humans at the MRHD. Oral administration of fenfluramine (0, 4.3, 8.6, or 34.6 mg/kg/day) to female rats throughout gestation and lactation resulted in marked increases in stillborn pups and neonatal offspring deaths at the highest dose tested and delayed growth and reflex development during the pre- weaning period at all doses.
Maternal body weight gain was decreased at all doses during pregnancy and at the two highest doses during lactation. A no-effect dose for adverse effects on pre- and postnatal development in rats was not determined. At the lowest dos… [Excerpted — this section continues on DailyMed.]
🧒 Pediatric Use ▾
8.4Pediatric Use The safety and effectiveness of FINTEPLA for the treatment of seizures associated with DS and LGS have been established in patients 2 years of age and older. Use of FINTEPLA for the treatment of seizures associated with DS in patients 2 years of age and older is supported by two randomized, double-blind, placebo-controlled trials in 202 patients 2 to 18 years of age. Use of FINTEPLA for the treatment of seizures associated with LGS is supported by a randomized, double-blind, placebo-controlled study in 263 patients aged 2 to 35 years, including 187 patients less than 18 years [see Boxed Warning , Warnings and Precautions (5) , Adverse Reaction (6.1) , and Clinical Studies (14) ].
FINTEPLA can cause decreases in appetite and weight. The growth of pediatric patients treated with FINTEPLA should be carefully monitored. Safety and effectiveness in patients less than 2 years of age have not been established.
Juvenile Animal Data Oral administration of fenfluramine (0, 3.0, 7.8, or 17.3 mg/kg/day) to young rats for 10 weeks starting on postnatal day 7 resulted in reduced body weight and neurobehavioral changes (decreased locomotor activity and learning and memory deficits) at all doses tested. Neurobehavioral effects persisted after dosing was discontinued. Bone size was decreased at the mid and high doses; brain size was decreased at the highest dose.
Partial or complete recovery was seen for these endpoints. A no-effect dose for postnatal developmental toxicity was not identified. The lowest dose tested (3.0 mg/kg/day) was associated with plasma fenfluramine exposures (AUC) less than that in humans at the maximum recommended human dose (MRHD) of 26 mg/day and norfenfluramine (metabolite) exposures (AUC) approximately 2 times that in humans at the MRHD.
🧓 Geriatric Use ▾
8.5Geriatric Use Clinical studies of FINTEPLA for the treatment of DS or LGS did not include patients 65 years of age and over to determine whether they respond differently from younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.
🆘 Overdosage ▾
10 OVERDOSAGE Overdose has not been observed in the FINTEPLA clinical trial program. However, overdose of fenfluramine, the active ingredient in FINTEPLA, has been reported at higher doses than those included in the clinical trial program. Some of the cases were fatal.
Events reported after overdose include mydriasis, tachycardia, flushing, tremors/twitching/muscle spasms, agitation/restlessness/anxiety, increased muscle tone/rigor/opisthotonos, respiratory distress or failure, and seizure. Seizure, coma, and cardiorespiratory arrest were reported in most of the fatal overdoses. There is no available specific antidote to the overdose reactions of FINTEPLA.
In the event of overdose, standard medical practice for the management of drug overdosage should be used. An adequate airway, oxygenation, and ventilation should be ensured; monitoring of cardiac rhythm and vital sign measurement is recommended. A certified poison control center should be contacted for updated information on the management of overdose with FINTEPLA.
🧬 Clinical Pharmacology ▾
12 CLINICAL PHARMACOLOGY
12.1Mechanism of Action The precise mechanism by which fenfluramine exerts its therapeutic effects in the treatment of seizures associated with Dravet syndrome and Lennox-Gastaut syndrome is unknown. Fenfluramine and the metabolite, norfenfluramine, exhibit agonist activity at serotonin 5-HT2 receptors. There is an association between serotonergic drugs with 5-HT2B receptor agonist activity, including fenfluramine and norfenfluramine, and valvular heart disease and pulmonary arterial hypertension.
12.2Pharmacodynamics Cardiac Electrophysiology At a dose 4 times the maximum recommended dose, FINTEPLA did not prolong the QT interval when tested in an adult population.
12.3Pharmacokinetics The pharmacokinetics of fenfluramine and norfenfluramine were studied in healthy subjects, in pediatric patients with DS, and in pediatric and adult patients with LGS. The steady-state systemic exposure (C max and AUC) of fenfluramine was slightly greater than dose proportional over the dose range of 13 to 51.8 mg twice-daily fenfluramine (i.e., 1 to 4 times the maximum recommended dose). In pediatric patients with DS who received FINTEPLA 0.7 mg/kg/day, up to a total daily dose of 26 mg fenfluramine, the geometric mean steady-state fenfluramine (coefficient of variation) C max was 68.0 (41%) ng/mL and AUC 0-24h was 1390 (44%) ng*h/mL.
Absorption Fenfluramine has a time to maximum plasma concentration (T max ) of 3 to 5 hours at steady state. The absolute bioavailability of fenfluramine is approximately 68-74%. There was no effect of food on the pharmacokinetics of fenfluramine or norfenfluramine.
Distribution The geometric mean (CV%) apparent volume of distribution (Vz/F) of fenfluramine is 11.9 (16.5%) L/kg following oral administration of FINTEPLA in healthy subjects. Fenfluramine is 50% bound to human plasma proteins in vitro and binding is independent of drug concentrations. Elimination The elimination half-life of fenfluramine was 20 hours and the geometric mean (CV%) clearance (CL/F) was 24.8 (29%) L/h, following oral administration of FINTEPLA in healthy subjects.
Metabolism Over 75% of fenfluramine is metabolized to norfenfluramine prior to elimination, primarily by CYP1A2, CYP2B6, and CYP2D6. Other CYP enzymes involved to a minor extent are CYP2C9, CYP2C19, and CYP3A4/5. Both fenfluramine and norfenfluramine are pharmacologically active.
Norfenfluramine is further deaminated and oxidized to form inactive metabolites. Excretion Most of an orally administered dose of fenfluramine (greater than 90%) is excreted in the urine as fenfluramine, norfenfluramine, or other metabolites with fenfluramine and norfenfluramine accounting for less than 25% of the total; less than 5% is found in feces. Specific Populations The effect of age (range: 2 to 50 years), sex, and race had no clinically meaningful effect on the pharmacokinetics of fenfluramine.
Patients with Renal Impairment In a dedicated clinical study comparing the pharmacokinetics of a single dose of 0.35 mg/kg FINTEPLA in subjects with severe renal impairment (eGFR < 30 mL/min/1.73m 2 determined by MDRD) and matched healthy volunteers, C max and AUC 0-inf of fenfluramine increased by 20% and 88%, respectively, and C max and AUC 0-inf of norfenfluramine increased by 13% and 21%, respectively in subjects with severe renal impairment [see Use in Specific Populations (8.6) ] . FINTEPLA has not been studied in patients with eGFR < 15 mL/min/1.73m 2 (determined by MDRD).
It is not known if fenfluramine or norfenfluramine is dialyzable. Patients with Hepatic Impairment In a study comparing the pharmacokinetics of a single dose of 0.35 mg/kg FINTEPLA in subjects with mild, moderate, or severe hepatic impairment (Child-Pugh Class A, B, or C) and subjects with normal liver function, AUC 0-t of fenfluramine increased by 95%, 113%, and 185% in subjects with mild, moderate, and severe hepatic impairment, respectively. C max of fenfluramine increased by 19%, 16%, and 29% in… [Excerpted — this section continues on DailyMed.]
🧬 Mechanism of Action ▾
12.1Mechanism of Action The precise mechanism by which fenfluramine exerts its therapeutic effects in the treatment of seizures associated with Dravet syndrome and Lennox-Gastaut syndrome is unknown. Fenfluramine and the metabolite, norfenfluramine, exhibit agonist activity at serotonin 5-HT2 receptors. There is an association between serotonergic drugs with 5-HT2B receptor agonist activity, including fenfluramine and norfenfluramine, and valvular heart disease and pulmonary arterial hypertension.
📦 How Supplied / Storage and Handling ▾
16 HOW SUPPLIED/STORAGE AND HANDLING
16.1How Supplied FINTEPLA oral solution is a clear, colorless, cherry flavored liquid containing 2.2 mg/mL fenfluramine and is supplied in a white plastic bottle with a child resistant closure as follows: Carton containing one 360 mL bottle (NDC 43376-322-36) Carton containing one 30 mL bottle (NDC 43376-322-30) Before dispensing, the pharmacist will insert a press-in bottle adapter into the dispensing bottle. The pharmacy will provide 3 mL or 6 mL calibrated oral dosing syringes.
16.2Storage and Handling Store FINTEPLA at room temperature between 20°C to 25°C (68°F to 77°F); excursions are permitted between 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. Do not refrigerate or freeze. Store the bottle and syringe together. Discard any unused portion 3 months after first opening the bottle or the "Discard After" date on the bottle, whichever is sooner.
📦 Storage and Handling ▾
16.2Storage and Handling Store FINTEPLA at room temperature between 20°C to 25°C (68°F to 77°F); excursions are permitted between 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. Do not refrigerate or freeze. Store the bottle and syringe together. Discard any unused portion 3 months after first opening the bottle or the "Discard After" date on the bottle, whichever is sooner.
📋 Description ▾
11 DESCRIPTION FINTEPLA oral solution contains 2.2 mg/mL fenfluramine, equivalent to 2.5 mg/mL of the hydrochloride salt. The active ingredient, fenfluramine hydrochloride, is designated chemically as N-ethyl-α- methyl-3-(trifluoromethyl)phenethylamine hydrochloride. The structural formula is: Fenfluramine hydrochloride is a white to off-white crystalline solid.
The pKa of fenfluramine is 10.2. FINTEPLA is a clear, colorless solution, pH 5. FINTEPLA contains the following inactive ingredients: cherry flavor, citric acid, ethylparaben hydroxyethylcellulose, methylparaben, potassium citrate, sucralose, and water.
FINTEPLA contains no ingredient made from gluten-containing grain (wheat, barley, or rye), and contains not more than 0.1% of carbohydrates, which is solely derived from the cherry flavor. Chemical Structure
💬 Information for Patients ▾
17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Medication Guide and Instructions for Use). Administration Information Advise patients who are prescribed FINTEPLA to use the oral dosing syringes provided by the pharmacy [see Dosage and Administration (2.7) and Instructions for Use ] . Instruct patients to discard any unused FINTEPLA 3 months after first opening the bottle or if the "discard after" date on the dispensing bottle has passed, whichever is sooner [see How Supplied/Storage and Handling (16.1) , (16.2) ].
Valvular Heart Disease and Pulmonary Arterial Hypertension Advise patients that cardiac monitoring must be performed using echocardiography to monitor for serious heart valve changes or high blood pressure in the arteries of the lungs [see Warnings and Precautions (5.1) ]. FINTEPLA REMS Program FINTEPLA is available only through a restricted program called the FINTEPLA REMS program [see Warnings and Precautions (5.2) ] . Inform the patient of the following notable requirements: Patients must enroll in the program and comply with ongoing echocardiogram monitoring requirements [see Warnings and Precautions (5.1) ].
FINTEPLA is only prescribed by certified health care providers and only dispensed from certified pharmacies participating in the program. Therefore, provide patients with the telephone number and website for information on how to obtain the product [see Warnings and Precautions (5.2) ]. Decreased Appetite and Decreased Weight Advise patients that decreased appetite is frequent during treatment with FINTEPLA, which can cause decrease in weight [see Warnings and Precautions (5.3) ] .
Somnolence, Sedation, and Lethargy Inform patients that FINTEPLA can cause somnolence, sedation, and lethargy. Caution patients about operating hazardous machinery, including motor vehicles, until they are reasonably certain that FINTEPLA does not affect them adversely (e.g., impair judgment, thinking, or motor skills) [see Warnings and Precautions (5.4) ] . Suicidal Thinking and Behavior Counsel patients, their caregivers, and their families that antiepileptic drugs may increase the risk of suicidal thoughts and behavior and advise them to be alert for the emergence or worsening of symptoms of depression, any unusual changes in mood or behavior, or the emergence of suicidal thoughts, behavior, or thoughts of self-harm.
Instruct patients, caregivers, and families to report behaviors of concern immediately to healthcare providers [see Warnings and Precautions (5.5) ] . Withdrawal of Antiepileptic Drugs (AEDs) Advise patients not to discontinue use of FINTEPLA without consulting with their healthcare provider. FINTEPLA should normally be gradually withdrawn to reduce the potential for increased seizure frequency and status epilepticus [see Dosage and Administration (2.8) , Warnings and Precautions (5.6) ] .
Serotonin Syndrome Inform patients about the risk of serotonin syndrome, which can be life-threatening. Advise patients on the signs and symptoms of serotonin syndrome and that certain over-the-counter medications and herbal supplements can increase this risk [see Warnings and Precautions (5.7) ]. Increase in Blood Pressure Inform patients that FINTEPLA can cause an increase in blood pressure [see Warnings and Precautions (5.8) ].
Glaucoma Inform patients that FINTEPLA can cause mydriasis and can precipitate angle closure glaucoma. Instruct patients to contact their healthcare provider if they have any acute decreases in visual acuity or ocular pain [see Warnings and Precautions (5.9) ]. Pregnancy Registry Advise patients to notify their healthcare provider if they become pregnant or intend to become pregnant during FINTEPLA therapy.
Encourage women who are taking FINTEPLA to enroll in the North American Antiepileptic Drug (NAAED) Pregnancy Registry if they become pregnant. This registry is collecting information about the safety of antiepileptic drugs during pregnancy [see Use in… [Excerpted — this section continues on DailyMed.]
💬 Medication Guide ▾
MEDICATION GUIDE FINTEPLA ® (fin-TEP-la) (fenfluramine) oral solution This Medication Guide has been approved by the U.S. Food and Drug Administration. Revised: 4/2025 Read this Medication Guide before you start taking FINTEPLA and each time you get a refill.
There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or treatment. What is the most important information I should know about FINTEPLA?
FINTEPLA can cause serious side effects, including: Problems with the valves in the heart (valvular heart disease) and high blood pressure in the arteries of the lungs (pulmonary arterial hypertension) have been associated with FINTEPLA. Your healthcare provider will do a test called an echocardiogram to check your heart and for high blood pressure in the arteries of the lungs before you start taking FINTEPLA, again every 6 months during treatment, and one time 3 to 6 months after you take your last dose of FINTEPLA.
Call your healthcare provider right away if you develop any of these signs and symptoms of heart or lung problems during treatment with FINTEPLA: shortness of breath tiredness or weakness, especially with increased activity lightheadedness or fainting swollen ankles or feet chest pain sensations of a rapid, fluttering heartbeat (palpitations) irregular pulse bluish color to your lips and skin (cyanosis) Because of the risk of heart valve problems (valvular heart disease) and high blood pressure in arteries of lungs (pulmonary arterial hypertension) FINTEPLA is only available through a restricted program called the FINTEPLA Risk Evaluation and Mitigation Strategy (REMS) Program.
Before you or your child receives FINTEPLA, your healthcare provider or pharmacist will make sure you understand how to take FINTEPLA safely. If you have any questions about FINTEPLA, ask your healthcare provider, visit www.FinteplaREMS.com, or call 1-877-964-3649. Decreased appetite and decreased weight.
Decreased appetite and decreased weight are both serious and common side effects of FINTEPLA in people with Dravet syndrome (DS) or Lennox-Gastaut syndrome (LGS). Your weight should be checked regularly during your treatment with FINTEPLA. Your healthcare provider may need to make changes to your FINTEPLA dose if your weight decreases.
In some cases, FINTEPLA may need to be stopped. Sleepiness, sedation, and lack of energy (lethargy). These are both serious and common side effects of FINTEPLA in people with Dravet syndrome (DS) or Lennox-Gastaut syndrome (LGS).
Taking FINTEPLA with central nervous system (CNS) depressants including alcohol may increase sleepiness. Do not drive, operate heavy machinery, or do other dangerous activities until you know how FINTEPLA affects you. Like all other antiepileptic drugs, FINTEPLA may cause suicidal thoughts or actions in a very small number of people (about 1 in 500).
Call your healthcare provider right away if you have any of these symptoms, especially if they are new, worse, or worry you: thoughts about suicide or dying trouble sleeping (insomnia) attempts to commit suicide new or worse irritability new or worse depression acting aggressive, being angry, or violent new or worse anxiety acting on dangerous impulses feeling agitated or restless an extreme increase in activity and talking (mania) panic attacks other unusual changes in behavior or mood How can I watch for early symptoms of suicidal thoughts and actions?
Pay attention to any changes, especially sudden changes, in mood, behaviors, thoughts, or feelings. Keep all follow-up visits with your healthcare provider as scheduled. Suicidal thoughts or actions can be caused by things other than medicines.
If you have suicidal thoughts or actions, your healthcare provider may check for other causes. Do not stop taking FINTEPLA without first talking to your healthcare provider . Stopping a seizure medicine such as FINTEPLA suddenly can cause you to have seizures more often or… [Excerpted — this section continues on DailyMed.]
🧬 Pharmacokinetics ▾
12.3Pharmacokinetics The pharmacokinetics of fenfluramine and norfenfluramine were studied in healthy subjects, in pediatric patients with DS, and in pediatric and adult patients with LGS. The steady-state systemic exposure (C max and AUC) of fenfluramine was slightly greater than dose proportional over the dose range of 13 to 51.8 mg twice-daily fenfluramine (i.e., 1 to 4 times the maximum recommended dose). In pediatric patients with DS who received FINTEPLA 0.7 mg/kg/day, up to a total daily dose of 26 mg fenfluramine, the geometric mean steady-state fenfluramine (coefficient of variation) C max was 68.0 (41%) ng/mL and AUC 0-24h was 1390 (44%) ng*h/mL.
Absorption Fenfluramine has a time to maximum plasma concentration (T max ) of 3 to 5 hours at steady state. The absolute bioavailability of fenfluramine is approximately 68-74%. There was no effect of food on the pharmacokinetics of fenfluramine or norfenfluramine.
Distribution The geometric mean (CV%) apparent volume of distribution (Vz/F) of fenfluramine is 11.9 (16.5%) L/kg following oral administration of FINTEPLA in healthy subjects. Fenfluramine is 50% bound to human plasma proteins in vitro and binding is independent of drug concentrations. Elimination The elimination half-life of fenfluramine was 20 hours and the geometric mean (CV%) clearance (CL/F) was 24.8 (29%) L/h, following oral administration of FINTEPLA in healthy subjects.
Metabolism Over 75% of fenfluramine is metabolized to norfenfluramine prior to elimination, primarily by CYP1A2, CYP2B6, and CYP2D6. Other CYP enzymes involved to a minor extent are CYP2C9, CYP2C19, and CYP3A4/5. Both fenfluramine and norfenfluramine are pharmacologically active.
Norfenfluramine is further deaminated and oxidized to form inactive metabolites. Excretion Most of an orally administered dose of fenfluramine (greater than 90%) is excreted in the urine as fenfluramine, norfenfluramine, or other metabolites with fenfluramine and norfenfluramine accounting for less than 25% of the total; less than 5% is found in feces. Specific Populations The effect of age (range: 2 to 50 years), sex, and race had no clinically meaningful effect on the pharmacokinetics of fenfluramine.
Patients with Renal Impairment In a dedicated clinical study comparing the pharmacokinetics of a single dose of 0.35 mg/kg FINTEPLA in subjects with severe renal impairment (eGFR < 30 mL/min/1.73m 2 determined by MDRD) and matched healthy volunteers, C max and AUC 0-inf of fenfluramine increased by 20% and 88%, respectively, and C max and AUC 0-inf of norfenfluramine increased by 13% and 21%, respectively in subjects with severe renal impairment [see Use in Specific Populations (8.6) ] . FINTEPLA has not been studied in patients with eGFR < 15 mL/min/1.73m 2 (determined by MDRD).
It is not known if fenfluramine or norfenfluramine is dialyzable. Patients with Hepatic Impairment In a study comparing the pharmacokinetics of a single dose of 0.35 mg/kg FINTEPLA in subjects with mild, moderate, or severe hepatic impairment (Child-Pugh Class A, B, or C) and subjects with normal liver function, AUC 0-t of fenfluramine increased by 95%, 113%, and 185% in subjects with mild, moderate, and severe hepatic impairment, respectively. C max of fenfluramine increased by 19%, 16%, and 29% in subjects with mild, moderate, and severe hepatic impairment, respectively.
AUC 0-t of norfenfluramine increased by 18% in mild hepatic impairment, 4% in moderate hepatic impairment, and decreased by 11% in severe hepatic impairment. C max of norfenfluramine decreased by 21%, 36%, and 45% in subjects with mild, moderate, and severe hepatic impairment, respectively. Combined molar AUC 0-t of fenfluramine and norfenfluramine increased by 55%, 56%, and 82% in subjects with mild, moderate, and severe hepatic impairment, respectively.
Combined molar C max of fenfluramine and norfenfluramine increased by 7.5%, 1.3%, and 8% in subjects with mild, moderate, and severe hepatic impairment, respectively.… [Excerpted — this section continues on DailyMed.]
🧬 Pharmacodynamics ▾
12.2Pharmacodynamics Cardiac Electrophysiology At a dose 4 times the maximum recommended dose, FINTEPLA did not prolong the QT interval when tested in an adult population.
🔬 Clinical Studies ▾
14 CLINICAL STUDIES
14.1Dravet Syndrome The effectiveness of FINTEPLA for the treatment of seizures associated with DS in patients 2 years of age and older was established in two randomized, double-blind, placebo-controlled trials in patients 2 to 18 years of age. Study 1 (N=117) compared a 0.7 mg/kg/day and a 0.2 mg/kg/day dose of FINTEPLA with placebo in patients who were not receiving stiripentol (NCT02682927 and NCT02826863). Study 2 (N=85) compared a 0.4 mg/kg/day dose of FINTEPLA with placebo in patients who were receiving stiripentol and either clobazam, valproate, or both (NCT02926898).
In both studies, patients had a clinical diagnosis of DS and were inadequately controlled on at least one AED or other antiseizure treatment including vagal nerve stimulation or a ketogenic diet. Both trials had a 6-week baseline period, during which patients were required to have a minimum of 6 convulsive seizures while on stable AED therapy. Convulsive seizures included tonic, clonic, generalized tonic-clonic, tonic-atonic, secondarily generalized tonic-clonic, hemiclonic, and focal with observable motor signs.
The baseline period was followed by randomization into a 2- week (Study 1) or 3-week (Study 2) titration period and a subsequent 12-week maintenance period, where the dose of FINTEPLA remained stable. In Study 1, 98% of patients were taking between 1 and 4 concomitant AEDs. The most frequently used concomitant AEDs (in at least 25% of patients), were valproate (61%), clobazam (59%), and topiramate (25%).
In Study 2, 100% of patients were taking between 2 and 4 concomitant AEDs. The most frequently used concomitant AEDs (in at least 25% of patients), were stiripentol (100%), clobazam (94%), and valproate (89%). The primary efficacy endpoint in both studies was the change from baseline in the frequency of convulsive seizures per 28 days during the combined 14-week (Study 1) or 15-week (Study 2) titration and maintenance periods (i.e., treatment period).
The median longest interval between convulsive seizures was also assessed. In Study 1 and Study 2, the reduction in convulsive seizure frequency per 28 days was statistically significantly greater for all dose groups of FINTEPLA compared to placebo (Table 6). A reduction in convulsive seizures was observed within 3 to 4 weeks of starting FINTEPLA, and the effect remained generally consistent over the 14- or 15-week treatment period.
Table 6: Change in Convulsive Seizure Frequency During the Treatment Period in Patients with Dravet Syndrome (Study 1 and Study 2) Convulsive Seizure Frequency (per 28 days) Placebo FINTEPLA 0.2 mg/kg/day FINTEPLA 0.7 mg/kg/day FINTEPLA 0.4 mg/kg/day ±All 0.4 mg/kg/day patients were also taking concomitant stiripentol, which increases the exposure of FINTEPLA. Study 1 N=39 N=38 N=40 NA Baseline Period Median 29.4 18.1
18.7NA % Difference Relative to Placebo Derived from the primary analysis model -31.7% -70.0% NA p-value compared to placebo 0.043 <0.001 Study 2 N=42 NA NA N=43 Baseline Period Median
11.5NA NA 15.0 % Difference Relative to Placebo NA NA -59.5% p-value compared to placebo <0.001 Figure 1 and Figure 2 display the percentage of patients by category of seizure response from baseline in convulsive seizure frequency (per 28 days) during the treatment period in Study 1 and Study 2, respectively. Figure 1: Proportion of Patients by Category of Seizure Response for FINTEPLA and Placebo in Patients with Dravet Syndrome (Study 1) Figure 2: Proportion of Patients by Category of Seizure Response for FINTEPLA and Placebo in Patients with Dravet Syndrome (Study 2) In Study 1, 3 of 40 (8%) patients in the FINTEPLA 0.7 mg/kg/day group and 3 of 38 (8%) patients in the FINTEPLA 0.2 mg/kg/day group reported no convulsive seizures during the 14-week treatment period, compared to 0 patients in the placebo group.
In Study 2, 1 of 43 (2%) patients in the FINTEPLA 0.4 mg/kg/day group reported no convulsive seizures during the 15-week treatment period, compar… [Excerpted — this section continues on DailyMed.]
🧪 Nonclinical Toxicology ▾
13 NONCLINICAL TOXICOLOGY
13.1Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Oral administration of fenfluramine to Tg.rasH2 mice (0, 4.3, 13.0, 34.6, or 51.8 mg/kg/day) for 26 weeks and to male and female rats (0, 0.9, 2.2, or 6.9 mg/kg/day) for 89 and 97 weeks, respectively, resulted in no evidence of drug-induced tumors in either species. In rats, plasma exposures (AUC) of fenfluramine and norfenfluramine (the major metabolite) at the highest dose tested were approximately 5 and 11 times, respectively, those in humans at the maximum recommended human dose (MRHD) of 26 mg/day.
Mutagenesis Fenfluramine was negative in an in vitro bacterial mutation (Ames) assay and an in vivo micronucleus and comet assay in rats. Impairment of Fertility Oral administration of fenfluramine (0, 3.0, 6.9, or 17.3 mg/kg/day) to male and female rats prior to and throughout mating and continuing in females to day 7 of gestation resulted in a decrease in fertility and increases in abnormal sperm and epithelial vacuolation of the epididymis at the highest dose tested and altered estrous cyclicity, decreased corpora lutea and implantations, and increased embryolethality at the mid and high dose.
These doses were associated with parental toxicity. The no-effect doses for adverse effects on fertility and reproductive performance in rats (6.9 and 3.0 mg/kg/day in males and females, respectively) were associated with plasma fenfluramine exposures (AUC) approximately 3 and 0.6 times, respectively, and norfenfluramine exposures approximately 5 and 3 times, respectively, those in humans at the MRHD.
📄 Carcinogenesis, Mutagenesis, Impairment of Fertility ▾
13.1Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Oral administration of fenfluramine to Tg.rasH2 mice (0, 4.3, 13.0, 34.6, or 51.8 mg/kg/day) for 26 weeks and to male and female rats (0, 0.9, 2.2, or 6.9 mg/kg/day) for 89 and 97 weeks, respectively, resulted in no evidence of drug-induced tumors in either species. In rats, plasma exposures (AUC) of fenfluramine and norfenfluramine (the major metabolite) at the highest dose tested were approximately 5 and 11 times, respectively, those in humans at the maximum recommended human dose (MRHD) of 26 mg/day.
Mutagenesis Fenfluramine was negative in an in vitro bacterial mutation (Ames) assay and an in vivo micronucleus and comet assay in rats. Impairment of Fertility Oral administration of fenfluramine (0, 3.0, 6.9, or 17.3 mg/kg/day) to male and female rats prior to and throughout mating and continuing in females to day 7 of gestation resulted in a decrease in fertility and increases in abnormal sperm and epithelial vacuolation of the epididymis at the highest dose tested and altered estrous cyclicity, decreased corpora lutea and implantations, and increased embryolethality at the mid and high dose.
These doses were associated with parental toxicity. The no-effect doses for adverse effects on fertility and reproductive performance in rats (6.9 and 3.0 mg/kg/day in males and females, respectively) were associated with plasma fenfluramine exposures (AUC) approximately 3 and 0.6 times, respectively, and norfenfluramine exposures approximately 5 and 3 times, respectively, those in humans at the MRHD.
📖 Instructions for Use ▾
INSTRUCTIONS FOR USE FINTEPLA ® (fin-TEP-la) (fenfluramine) oral solution 2.2 mg/mL Be sure that you read, understand, and follow these instructions before you start using FINTEPLA oral solution and each time you get a refill. There may be new information. This Instructions for Use contains information on how to take FINTEPLA.
This information does not take the place of talking to your healthcare provider about your medical condition or treatment. What is included with FINTEPLA? The following items are included to prepare and give an oral dose of FINTEPLA: 1 bottle of FINTEPLA oral solution (2.2 mg/mL) 2 reusable oral syringes 1 Bottle of FINTEPLA Oral Solution (2.2 mg/mL) 2 Oral Syringes Call the pharmacist at 1-844-288-5007 if you did not receive the items listed above, or if you need help using them.
Important information about FINTEPLA FINTEPLA is an oral medicine (taken by mouth) and is given 2 times each day . Follow your healthcare provider's instructions for taking or giving doses of FINTEPLA. If you have questions about how to prepare or give FINTEPLA, contact your healthcare provider or call your pharmacist.
Always use the oral syringes provided with FINTEPLA to make sure the right dose is given. If you need a new syringe contact your pharmacist. Do not use a household teaspoon or tablespoon.
Oral syringes provided with FINTEPLA by the pharmacy. With FINTEPLA you will receive 2 reusable oral syringes. 2 oral syringes that can measure up to 3 mL OR 2 oral syringes that can measure up to 6 mL or Call the pharmacist at 1-844-288-5007 if you have any questions about the syringes provided with FINTEPLA.
Parts of the Oral Syringe Preparing a Dose Step 1. Make sure you have: The bottle of FINTEPLA oral solution, and A clean, dry reusable oral syringe that was provided with FINTEPLA. Step 2.
Check the "Discard After" date (MM/DD/YYYY). Do not use the medicine if the "Throw Away" (Discard) date has passed. If the date is near, contact your pharmacy or healthcare provider to get a refill or new prescription.
If the date has passed, dispose of any unused FINTEPLA. Step 3. Press down and turn the childproof cap to the left (counterclockwise) and remove it from the bottle.
Set the cap aside (do not throw away). Step 4. Make sure the adapter is on the bottle.
If the bottle does not have an adapter, contact the pharmacist. Always leave the adapter in place in the bottle of medicine. Step 5.
Remove an oral syringe from its packaging, if needed. Only use the oral syringes provided with FINTEPLA. If an oral syringe is damaged, or you cannot read the dose markings : Use the other oral syringe provided, or Contact the pharmacist to get a new one.
Step 6. Make sure the plunger is pushed all the way into the oral syringe. Step 7.
Hold the bottle of medicine firmly on a hard, flat surface. Step 8. Push the tip of the oral syringe into the opening of the adapter until it cannot be pushed further.
Step 9. Hold the oral syringe and bottle together and turn upside down. Step 10.
Slowly pull the plunger of the oral syringe to withdraw the prescribed dose. Step 11. Line up the end of the plunger with the mark for the prescribed dose on the oral syringe.
Tips to Getting the Correct Dose If you draw out too much medicine: Leave the oral syringe in the adapter. Push the plunger slowly back into the syringe until you reach the prescribed dose. If you see air bubbles in the medicine: Leave the oral syringe in the adapter.
Pull the plunger further down. Allow the bubbles to rise to the tip of the syringe. Push the plunger in all the way.
Slowly pull the plunger out to the prescribed dose. Note: Very small bubbles in the liquid are normal. Step 12.
Hold the oral syringe and bottle together and then turn the bottle right side up. Step 13. Holding the bottle firmly, gently pull the oral syringe out of the bottle adapter.
Step 14. Make sure the dose in the oral syringe still matches the prescribed dose. If the dose does not match: Put the syringe back int… [Excerpted — this section continues on DailyMed.]
📄 Recent Major Changes ▾
Boxed Warning 4/2025 Warnings and Precautions ( 5.1 ) 4/2025
📄 Package Label / Principal Display Panel ▾
PRINCIPAL DISPLAY PANEL - 30 mL Bottle Label - NDC 3376-322-30 NDC 43376-322-30 Fintepla ® (fenfluramine) oral solution 2.2 mg/mL Rx only For oral use only Contents 30 mL PRINCIPAL DISPLAY PANEL - 30 mL Bottle Label - NDC 3376-322-30
PRINCIPAL DISPLAY PANEL - 30 mL Bottle Carton - NDC 3376-322-30 NDC 43376-322-30 Fintepla ® (fenfluramine) oral solution 2.2 mg/mL For oral use only Attention Pharmacist: Dispense the enclosed Medication Guide to each patient Contents: One 30 mL bottle Rx only PRINCIPAL DISPLAY PANEL - 30 mL Bottle Carton - NDC 3376-322-30
PRINCIPAL DISPLAY PANEL - 360 mL Bottle Label - NDC 43376-322-36 NDC 43376-322-36 Fintepla ® (fenfluramine) oral solution 2.2 mg/mL For oral use only Rx only Contents 360 mL PRINCIPAL DISPLAY PANEL - 360 mL Bottle Label - NDC 43376-322-36
PRINCIPAL DISPLAY PANEL - 360 mL Bottle Carton - NDC 43376-322-36 Fintepla ® (fenfluramine) oral solution 2.2 mg/mL For oral use only Attention Pharmacist: Dispense the enclosed Medication Guide to each patient Contents: One 360 mL bottle Rx only PRINCIPAL DISPLAY PANEL - 360 mL Bottle Carton - NDC 43376-322-36
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| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | ✓ Available |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | ✓ Available |