Cyproheptadine Hydrochloride 2 mg/5mL Solution, 473 mL — NDC 39328-544-16 (Billing 39328-0544-16)
This is a package of 473 mL of Cyproheptadine Hydrochloride 2 mg/5mL Solution from Patrin Pharma, Inc., marketed since Feb 2022 and currently FDA-listed; retail pharmacies pay about $0.0419 per mL (NADAC). It is this product's only package size.
NDC database record
One package, one record: these facts belong to NDC 39328-544-16 alone.
- Record
- FDA NDC Directory package listing · Human prescription drug
- Code segments
- 39328 labeler · 544 product · 16 package
- Package marketed since
- Feb 15, 2022
- Sample package
- No — commercial package
- Listing certified through
- Dec 31, 2026
- Billing quantity
- 473 mL per package
- Barcode (UPC-A, from the NDC)
- 3 3932854416 4
- Medicaid fills, this package
- 9,502 prescriptions in the last four reported quarters
- FDA record last changed
- Jul 24, 2026
Other active recalls for Cyproheptadine Hydrochloride (different manufacturers) — 1 · tap to view
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): 004010
- GCN: 15803
- GPI-14 (Medi-Span): 41500020101210
- HICL (First Databank): 001672
- AHFS class code: 04:04.00.00
- RxCUI (RxNorm): 866021
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 6, 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 Other antihistamines for systemic use class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
- It's an antihistamine for allergy problems like hay fever, allergic eye irritation, hives and swelling. It can also be used after a severe allergic reaction is under control, along...
- It often does, though the sleepiness may fade over time. Be careful driving or using machinery until you know how it affects you. Skip alcohol, since it adds to the drowsiness.
- Be careful. Sleep aids, sedatives, tranquilizers and anti-anxiety medicines can add to the sedation. Please check with me or your doctor first.
- Can I take it with my sleep or anxiety medicine?
Patient education
Supplement & herbal interactions
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 6, 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 | $0.042 | $19.82 / 473 ml |
| Medicaid paysCMS SDUD · 12 mo | $0.0711 | $33.63 / 473 ml |
| Medicare drug plans payPart D · Q2 2026 | $0.0807 | $38.17 / 473 ml |
Where does this data come from?
- CMS NADAC weekly file · file of Sep 30, 2026
- 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 |
|---|---|---|---|---|
| 39328-0544-16 You're viewing this Main listing | 473 mL in 1 BOTTLE, GLASS | 2022-02-15 | — | Active |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| cyproheptadine hydrochloride solution 2 mg/5mL 58657-0697-16 | Method | 473 ml | $0.041 | AA | Availability likely | save 2% |
| Cyproheptadine Hydrochloride 2 mg/5mL 70752-0101-12 | QUAGEN | 473 ml | $0.041 | AA | Availability likely | save 2% |
| Cyproheptadine Hydrochloride 2 mg/5mLthis 39328-0544-16 | Patrin | 473 ml | $0.042 | AA | Availability likely | — |
| Cyproheptadine 2 mg/5mL 62135-0949-47 | Chartwell | 473 ml | $0.042 | AA | Availability likely | — |
| Cyproheptadine Hydrochloride 2 mg/5mL 64980-0504-48 | Rising | 473 ml | $0.042 | AA | Availability likely | — |
| Cyproheptadine Hydrochloride 2 mg/5mL 70752-0185-12 | QUAGEN | 473 ml | $0.042 | AA | Availability likely | — |
| Cyproheptadine Hydrochloride 2 mg/5mL 17856-0504-01 | Atlantic | 120 syringes | — | AA | FDA listed | — |
| Cyproheptadine Hydrochloride 2 mg/5mL 27808-0099-01 | Tris | 473 ml | — | — | FDA listed | — |
| Cyproheptadine Hydrochloride 2 mg/5mL 72162-2065-02 | Bryant | 473 ml | — | AA | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Oct 3, 2026
- CMS NADAC weekly file · file of Sep 30, 2026
Availability & generic status
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
Where does this data come from?
- FDA Orange Book · refreshed Oct 3, 2026
What it looks like
Where does this data come from?
- FDA label on DailyMed · label index refreshed Oct 6, 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.
🧪 Avoiding an ingredient? See Cyproheptadine inactive ingredients by manufacturer: every current product's list side by side, so you can ask your pharmacy for the version that does not list it.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
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UNII 3K9958V90M
A liquid solvent derived from fermentation or chemical synthesis. In medicines, alcohol dissolves active ingredients, helps preserve the product, and improves how the body absorbs certain drugs.
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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 35SW5USQ3G
A synthetic yellow dye used to color medicines. It helps make tablets, capsules, and liquids visually distinct so patients can easily identify their medication.
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UNII V95R5KMY2B
Peppermint is a flavoring agent derived from the peppermint plant. It's added to medicines to improve taste and mask bitter or unpleasant flavors, making them easier to take.
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UNII X045WJ989B
Sorbic acid is a preservative derived from berries that prevents mold, yeast, and bacterial growth in medicines. It keeps the product stable and safe during storage.
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UNII C151H8M554
A natural sugar derived from sugar cane or sugar beets. It's used as a sweetener, filler, and binder to improve taste, add bulk, and help hold tablet or capsule ingredients together.
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UNII B22547B95K
A salt derived from citric acid that helps maintain the proper acid-base balance in the medicine. It's used as a buffer to keep the product stable and at the right pH level.
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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.
8 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 6, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
Manufacturer & labeler
More NDCs from Patrin Pharma, Inc. labeler code 39328
- Senna UD Sennosides 8.8 mg/5mL Syrup NDC 39328-120-50
- Hydrocortisone Acetate 30 mg Suppository NDC 39328-129-12
- Methylphenidate HCl 10 mg/5mL Solution NDC 39328-154-50
- Senna UD Sennosides 26.4 mg/15mL Syrup NDC 39328-220-50
- Levetiracetam 100 mg/mL Solution NDC 39328-511-05
- Amantadine Hydrochloride 50 mg/5mL Solution NDC 39328-530-10
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS AND USAGE Perennial and seasonal allergic rhinitis Vasomotor rhinitis Allergic conjunctivitis due to inhalant allergens and foods Mild, uncomplicated allergic skin manifestations of urticaria and angioedema Amelioration of allergic reactions to blood or plasma Cold urticaria Dermatographism As therapy for anaphylactic reactions adjunctive to epinephrine and other standard measures after the acute manifestations have been controlled.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION DOSAGE SHOULD BE INDIVIDUALIZED ACCORDING TO THE NEEDS AND THE RESPONSE OF THE PATIENT. Each 5 mL of Cyproheptadine Hydrochloride Oral Solution contains 2 mg of Cyproheptadine hydrochloride. Although intended primarily for administration to children, the oral solution is also used for administration to adults who cannot swallow tablets.
Children The total daily dosage for children may be calculated on the basis of body weight or body area using approximately 0.25 mg/kg/day (0.11 mg/lb/day) or 8 mg per square meter of body surface (8 mg/m 2 ). Age 2 to 6 years The usual dose is 2 mg (one teaspoonful) two or three times a day, adjusted as necessary to the size and response of the patient. The dose is not to exceed 12 mg a day.
Age 7 to 14 years The usual dose is 4 mg (two teaspoonsful) two or three times a day, adjusted as necessary to the size and response of the patient. The dose is not to exceed 16 mg a day. Adults The total daily dose for adults should not exceed 0.5 mg/kg/day (0.23 mg/lb/day).
The therapeutic range is 4 to 20 mg a day, with the majority of patients requiring 12 to 16 mg a day. An occasional patient may require as much as 32 mg a day for adequate relief. It is suggested that dosage be initiated with 4 mg (two teaspoonsful) three times a day and adjusted according to the size and response of the patient.
⛔ Contraindications ▾
CONTRAINDICATIONS Newborn or Premature Infants This drug should not be used in newborn or premature infants. Nursing Mothers Because of the higher risk of antihistamines for infants generally and for newborns and prematures in particular, antihistamine therapy is contraindicated in nursing mothers. Other Conditions Hypersensitivity to cyproheptadine and other drugs of similar chemical structure Monoamine oxidase inhibitor therapy (see Drug Interactions ) Angle-closure glaucoma Stenosing peptic ulcer Symptomatic prostatic hypertrophy Bladder neck obstruction Pyloroduodenal obstruction Elderly, debilitated patients
⚠️ Warnings ▾
WARNINGS Children Overdosage of antihistamines, particularly in infants and children, may produce hallucinations, central nervous system depression, convulsions and death. Antihistamines may diminish mental alertness; conversely, particularly in the young child, they may occasionally produce excitation. CNS Depressants Antihistamines may have additive effects with alcohol and other CNS depressants, e.g., hypnotics, sedatives, tranquilizers, antianxiety agents.
Activities Requiring Mental Alertness Patients should be warned about engaging in activities requiring mental alertness and motor coordination, such as driving a car or operating machinery. Antihistamines are more likely to cause dizziness, sedation and hypotension in elderly patients.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS Adverse reactions which have been reported with the use of antihistamines are as follows: Central Nervous System: Sedation and sleepiness (often transient), dizziness, disturbed coordination, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, paresthesias, neuritis, convulsions, euphoria, hallucinations, hysteria, faintness. Integumentary: Allergic manifestation of rash and edema, excessive perspiration, urticaria, photosensitivity. Special Senses: Acute labyrinthitis, blurred vision, diplopia, vertigo, tinnitus.
Cardiovascular: Hypotension, palpitation, tachycardia, extrasystoles, anaphylactic shock. Hematologic: Hemolytic anemia, leukopenia, agranulocytosis, thrombocytopenia. Digestive System: Dryness of mouth, epigastric distress, anorexia, nausea, vomiting, diarrhea, constipation, jaundice.
Genitourinary: Urinary frequency, difficult urination, urinary retention, early menses. Respiratory: Dryness of nose and throat, thickening of bronchial secretions, tightness of chest and wheezing, nasal stuffiness. Miscellaneous: Fatigue, chills, headache, increased appetite/weight gain.
To report SUSPECTED ADVERSE REACTIONS, contact Patrin Pharma at 1-800-936-3088 or FDA at 1-800-FDA-1088.
🔄 Drug Interactions ▾
Drug Interactions MAO inhibitors prolong and intensify the anticholinergic effects of antihistamines. Antihistamines may have additive effects with alcohol and other CNS depressants, e.g., hypnotics, sedatives, tranquilizers, antianxiety agents.
🤰 Pregnancy ▾
Pregnancy Pregnancy Category B Reproduction studies have been performed in rabbits, mice and rats at oral or subcutaneous doses up to 32 times the maximum recommended human oral dose and have revealed no evidence of impaired fertility or harm to the fetus due to cyproheptadine. Cyproheptadine has been shown to be fetotoxic in rats when given by intraperitoneal injection in doses four times the maximum recommended human oral dose. Two studies in pregnant women, however, have not shown that cyproheptadine increases the risk of abnormalities when administered during the first, second and third trimesters of pregnancy.
No teratogenic effects were observed in any of the newborns. Nevertheless, because the studies in humans cannot rule out the possibility of harm, cyproheptadine should be used during pregnancy only if clearly needed.
🧒 Pediatric Use ▾
Pediatric Use Safety and effectiveness in pediatric patients below the age of two years have not been established. (See CONTRAINDICATIONS, Newborn or Premature Infants , and WARNINGS, Children .)
🆘 Overdosage ▾
OVERDOSAGE Antihistamine overdosage reactions may vary from central nervous system depression to stimulation especially in children. Also, atropine-like signs and symptoms (dry mouth; fixed, dilated pupils; flushing, etc.) as well as gastrointestinal symptoms may occur. If vomiting has not occurred spontaneously, the patient should be induced to vomit with syrup of ipecac.
If the patient is unable to vomit, perform gastric lavage followed by activated charcoal. Isotonic or 1/2 isotonic saline is the lavage of choice. Precautions against aspiration must be taken especially in infants and children.
When life-threatening CNS signs and symptoms are present, intravenous physostigmine salicylate may be considered. Dosage and frequency of administration are dependent on age, clinical response and recurrence after response. (See package circulars for physostigmine products.) Saline cathartics, as milk of magnesia, by osmosis draw water into the bowel and, therefore, are valuable for their action in rapid dilution of bowel content.
Stimulants should not be used. Vasopressors may be used to treat hypotension. The oral LD 50 of cyproheptadine is 123 mg/kg, and 295 mg/kg in the mouse and rat, respectively.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY Cyproheptadine is a serotonin and histamine antagonist with anticholinergic and sedative effects. Antiserotonin and antihistamine drugs appear to compete with serotonin and histamine, respectively, for receptor sites. Pharmacokinetics and Metabolism After a single 4 mg oral dose of 14 C-labeled cyproheptadine HCl in normal subjects, given as tablets or oral solution, 2-20% of the radioactivity was excreted in the stools.
Only about 34% of the stool radioactivity was unchanged drug, corresponding to less than 5.7% of the dose. At least 40% of the administered radioactivity was excreted in the urine. No detectable amounts of unchanged drug were present in the urine of patients on chronic 12-20 mg daily doses of cyproheptadine oral solution.
The principal metabolite found in human urine has been identified as a quaternary ammonium glucuronide conjugate of cyproheptadine. Elimination is diminished in renal insufficiency.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Cyproheptadine Hydrochloride Oral Solution, USP, 2 mg/5 mL in a yellow, peppermint-flavored vehicle, is supplied in a 473 mL (16 FL. OZ.) bottle. Store at 20-25°C (68-77°F). Excursion permitted 15-30°C (59-86°F) [see USP Controlled Room Temperature]. Dispense in a tight, light-resistant container as defined in the USP. NDC#39328-544-16 473 mL (16 FL. OZ.)
📦 Storage and Handling ▾
Store at 20-25°C (68-77°F). Excursion permitted 15-30°C (59-86°F) [see USP Controlled Room Temperature]. Dispense in a tight, light-resistant container as defined in the USP. NDC#39328-544-16 473 mL (16 FL. OZ.)
📋 Description ▾
DESCRIPTION Each 5 mL (one teaspoonful) contains: Cyproheptadine Hydrochloride 2 mg Inactive Ingredients: Alcohol 5%, citric acid, D&C Yellow #10, flavors, purified water, sodium citrate, sorbic acid (0.1% as preservative) and sucrose. Cyproheptadine HCl is an antihistaminic and antiserotonergic agent. Cyproheptadine hydrochloride is a white to slightly yellowish, crystalline solid, with a molecular weight of 350.89, which is slightly soluble in water, freely soluble in methanol, sparingly soluble in ethanol, soluble in chloroform and practically insoluble in ether.
It is the sesquihydrate of 4-(5H-dibenzo [a,d] cyclohepten-5-ylidene)-1-methylpiperidine hydrochloride. The molecular formula of the anhydrous salt is C 21 H 21 N∙HCl and the structural formula of the anhydrous salt is: Chemical Structure
💬 Information for Patients ▾
Information for Patients Antihistamines may diminish mental alertness; conversely, particularly in the young child, they may occasionally produce excitation. Patients should be warned about engaging in activities requiring mental alertness and motor coordination, such as driving a car or operating machinery.
⚠️ Precautions ▾
PRECAUTIONS General Cyproheptadine has an atropine-like action and, therefore, should be used with caution in patients with: History of bronchial asthma Increased intraocular pressure Hyperthyroidism Cardiovascular disease Hypertension Information for Patients Antihistamines may diminish mental alertness; conversely, particularly in the young child, they may occasionally produce excitation. Patients should be warned about engaging in activities requiring mental alertness and motor coordination, such as driving a car or operating machinery.
Drug Interactions MAO inhibitors prolong and intensify the anticholinergic effects of antihistamines. Antihistamines may have additive effects with alcohol and other CNS depressants, e.g., hypnotics, sedatives, tranquilizers, antianxiety agents. Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term carcinogenic studies have not been done with cyproheptadine.
Cyproheptadine had no effect on fertility in a two-litter study in rats or a two-generation study in mice at about 10 times the human dose. Cyproheptadine did not produce chromosome damage in human lymphocytes or fibroblasts in vitro ; high doses (10- 4 M) were cytotoxic. Cyproheptadine did not have any mutagenic effect in the Ames microbial mutagen test; concentrations of above 500 mcg/plate inhibited bacterial growth.
Pregnancy Pregnancy Category B Reproduction studies have been performed in rabbits, mice and rats at oral or subcutaneous doses up to 32 times the maximum recommended human oral dose and have revealed no evidence of impaired fertility or harm to the fetus due to cyproheptadine. Cyproheptadine has been shown to be fetotoxic in rats when given by intraperitoneal injection in doses four times the maximum recommended human oral dose. Two studies in pregnant women, however, have not shown that cyproheptadine increases the risk of abnormalities when administered during the first, second and third trimesters of pregnancy.
No teratogenic effects were observed in any of the newborns. Nevertheless, because the studies in humans cannot rule out the possibility of harm, cyproheptadine should be used during pregnancy only if clearly needed. Nursing Mothers It is not known whether this drug is excreted in human milk.
Because many drugs are excreted in human milk, and because of the potential for serious adverse reactions in nursing infants from cyproheptadine, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother (see CONTRAINDICATIONS ). Pediatric Use Safety and effectiveness in pediatric patients below the age of two years have not been established. (See CONTRAINDICATIONS, Newborn or Premature Infants , and WARNINGS, Children .)
🍼 Nursing Mothers ▾
Nursing Mothers It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, and because of the potential for serious adverse reactions in nursing infants from cyproheptadine, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother (see CONTRAINDICATIONS ).
🧬 Pharmacokinetics ▾
Pharmacokinetics and Metabolism After a single 4 mg oral dose of 14 C-labeled cyproheptadine HCl in normal subjects, given as tablets or oral solution, 2-20% of the radioactivity was excreted in the stools. Only about 34% of the stool radioactivity was unchanged drug, corresponding to less than 5.7% of the dose. At least 40% of the administered radioactivity was excreted in the urine.
No detectable amounts of unchanged drug were present in the urine of patients on chronic 12-20 mg daily doses of cyproheptadine oral solution. The principal metabolite found in human urine has been identified as a quaternary ammonium glucuronide conjugate of cyproheptadine. Elimination is diminished in renal insufficiency.
📄 Carcinogenesis, Mutagenesis, Impairment of Fertility ▾
Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term carcinogenic studies have not been done with cyproheptadine. Cyproheptadine had no effect on fertility in a two-litter study in rats or a two-generation study in mice at about 10 times the human dose. Cyproheptadine did not produce chromosome damage in human lymphocytes or fibroblasts in vitro ; high doses (10- 4 M) were cytotoxic.
Cyproheptadine did not have any mutagenic effect in the Ames microbial mutagen test; concentrations of above 500 mcg/plate inhibited bacterial growth.
📄 Package Label / Principal Display Panel ▾
PRINCIPAL DISPLAY PANEL - 473 mL Bottle Label Rx Only NDC 39328-544-16 Cyproheptadine Hydrochloride Oral Solution, USP 2 mg/5 mL 473 mL (16 FL. OZ.) PATRIN PHARMA PRINCIPAL DISPLAY PANEL - 473 mL Bottle Label