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Guanfacine Extended-Release 1 mg Tablet, Extended Release, 500-count — NDC 71205-0944-55 package photo

Guanfacine Extended-Release 1 mg Tablet, Extended Release, 500-count

by Proficient Rx LP · 500 TABLET, EXTENDED RELEASE in 1 BOTTLE (71205-944-55)
NDC 71205-0944-55
🏷️ FDA NDC (as labeled) 71205-944-55 billing pads the product segment with a zero
This package
Contains500-count Pack sizes5 compare ↓
Also priced by: Part D plans $0.4957/unit — full pricing hub ↓
Also comes in: 30 tablets 71205-0944-30 60 tablets 71205-0944-60 90 tablets 71205-0944-90 100 tablets 71205-0944-00
Rx only Generic On market Non-controlled
🗂️ Data synced Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

🆔 Identity & classification

FDA NDC (as labeled) 71205-944-55
Product NDC 71205-944
11-digit billing NDC 71205094455
NCPDP billing unit EA — each (per item)
RxCUI 862006, 862013, 862019, 862025
UNII 30OMY4G3MK
UPC 0371205947309, 0371205946302, 0371205945305
Application # ANDA201408
SPL Set ID 6460ad33-4feb-4a4d-9958-501084046389
Established class (EPC) Central alpha-2 Adrenergic Agonist
Mechanism of action Adrenergic alpha2-Agonists
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2017-07-07
Route ORAL
Dosage form TABLET, EXTENDED RELEASE
Substance GUANFACINE
GPI-14 61353030107520
GPI class guanFACINE HCl ER
GCN Seq No 065570
GCN 27576
HICL code 000120
Ingredient (HICL) Guanfacine Hcl
HIC1 code H
Therapeutic class — broad (HIC1) Nervous System (Except Autonomic)
HIC2 code H8
Therapeutic class — intermediate (HIC2) Psychoactive Drugs (Continued 2)
HIC3 code H8M
Therapeutic class — specific (HIC3) Tx For Adhd - Selective Alpha-2 Receptor Agonist
AHFS code 24:24.00.00
AHFS class Central Alpha-Agonists
FDB label name GUANFACINE HCL ER 1 MG TABLET
FDB brand name Guanfacine Hcl Er
Legend status F — Federal legend — prescription drug or device
TE code (Orange Book) AB · RLD · RS
Why two NDCs? The FDA registers this code as 71205-944-55 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 71205-0944-55. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

🏷️ RxNorm drug class

This medicine belongs to the Central alpha-2 Adrenergic Agonist class.

Pharmacologic class Central alpha-2 Adrenergic Agonist
Drug family (ATC) Imidazoline receptor agonists
How it works Adrenergic alpha2-Agonists
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

🏭 Manufacturer & labeler

LabelerProficient Rx LP
Application holderTWI PHARMACEUTICALS INC
FDA applicationANDA201408 (ANDA)
Labeler code71205
First marketedJul 2017
Product typeHuman Prescription Drug
Portfolio1,723 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

🩺 Clinical

Label name GUANFACINE HCL ER 1 MG TABLET Ingredient Guanfacine Hcl
📗 Our plain-language guide HelloPharmacist
  • It's used for both, depending on which form you have. The regular (immediate-release) tablet is prescribed for high blood pressure. The extended-release version — brand name Intuni...
  • What is guanfacine actually used for — is it for ADHD or blood pressure?
  • No, Intuniv is not a stimulant at all. It works on a different part of the brain than medications like Adderall or Ritalin. That's actually one reason it's sometimes used alongside...
  • My child takes Intuniv for ADHD — is it a stimulant?
📖 Read our full Guanfacine guide →
1
Nutrient depletion considerations

Guanfacine may be associated with lower levels of 1 nutrient — worth a chat with your pharmacist, not a cause for alarm.

🧪 Full Guanfacine nutrient depletion report →
An association is not a deficiency. Educational only — don't start or stop anything without professional guidance.
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

💊 What it looks like

Color White / Blue
ShapeOval
ImprintA538;4;mg
Size12 mm
ScoringNot scored
One label can cover several strengths, so colors may be combined — always confirm a loose pill against the dispensed prescription label or a pharmacist.
Where does this data come from?
Physical description (imprint, shape, color, scoring, coating) from this product’s FDA Structured Product Labeling (SPL), mirrored from DailyMed / openFDA.

🧪 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.

  • UNII 3NXW29V3WO
    Hypromellose is a plant-based thickener made from cellulose. It's used in medicines as a binder to hold ingredients together, a coating for tablets, and a thickener for liquids.
  • UNII EWQ57Q8I5X
    Lactose monohydrate is a natural sugar derived from milk. It serves as a filler and binder in tablets and capsules, helping create the proper size, texture, and consistency of the medicine.
  • UNII 70097M6I30
    Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
  • UNII OP1R32D61U
    Microcrystalline cellulose is a purified form of cellulose, a natural fiber from plant sources. It acts as a binder and filler in tablets and capsules, helping hold ingredients together and give the medicine its shape and size.
  • UNII 58QVG85GW3
    A synthetic polymer made from vinyl acetate and phthalic acid. It coats tablets and capsules to control when and where the medicine dissolves in the digestive system, protecting the contents from stomach acid.
  • UNII 333AG72FWJ
    Povidone K12 is a synthetic polymer derived from petroleum. It acts as a binder and disintegrant in tablets and capsules, helping hold ingredients together and allowing the tablet to break apart for absorption.
  • UNII ETJ7Z6XBU4
    Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
  • UNII 368GB5141J
    A detergent and foaming agent derived from coconut or palm oil. In medications, it helps break down and mix oil and water-based ingredients, aids in tablet disintegration, and improves how the drug dissolves and spreads in the mouth or digestive system.

8 inactive ingredients listed in the exact product block matched to this NDC.

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — 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.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

💲 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 systemPer eachPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · Q2 2026 $0.4957 $247.85 / 500 tablets
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
guanfacine 1 mg 00228-2850-11 Actavis 100 tablets $0.132 AB Availability likely —
Guanfacine Extended-Release 1 mg 24979-0533-01 Upsher-Smith 100 tablets $0.132 AB Availability likely —
Guanfacine 1 mg 29300-0460-01 Unichem 100 tablets $0.132 AB Availability likely —
Guanfacine extended-release 1 mg 60505-3927-01 Apotex 100 tablets $0.132 AB Availability likely —
Guanfacine 1 mg 62332-0745-31 Alembic 100 tablets $0.132 AB Availability likely —
Guanfacine 1 mg 63304-0924-01 Sun 100 tablets $0.132 — Discontinued —
Guanfacine 1 mg 70436-0039-01 Slate 100 tablets $0.132 AB Availability likely —
Guanfacine 1 mg 72266-0255-55 Fosun 100 tablets $0.132 AB Availability likely —
Guanfacine 1 mg 16714-0190-01 NORTHSTAR 100 tablets $0.228 — FDA listed —
Intuniv 1 mg 54092-0513-02 Takeda 100 tablets $9.397 AB Availability likely —
guanfacine 1 mg 42291-0324-01 AvKARE 100 tablets — AB Discontinued —
Guanfacine 1 mg 46708-0745-31 Alembic 100 tablets — AB FDA listed —
Guanfacine 1 mg 51407-0952-01 Golden 100 tablets — AB FDA listed —
Guanfacine Extended-Release 1 mg 60429-0960-01 Golden 100 tablets — AB FDA listed —
Guanfacine 1 mg 60760-0863-30 St. 30 tablets — AB FDA listed —
Guanfacine 1 mg 63629-8161-01 Bryant 30 tablets — — FDA listed —
Guanfacine Extended-Release 1 mg 70518-2771-00 REMEDYREPACK 30 tablets — AB FDA listed —
Guanfacine 1 mg 70518-4539-00 REMEDYREPACK 30 tablets — AB FDA listed —
Guanfacine Extended-Release 1 mgthis 71205-0944-55 Proficient 500 tablets — AB FDA listed —
Guanfacine 1 mg 71335-2379-01 Bryant 30 tablets — AB FDA listed —
Guanfacine extended-release 1 mg 71335-3078-01 Bryant 30 tablets — AB FDA listed —
Guanfacine 1 mg 72162-1798-01 Bryant 100 tablets — — FDA listed —
Guanfacine ER 1 mg 72189-0469-30 Direct_Rx 30 tablets — AB FDA listed —
Guanfacine ER 1 mg 72189-0597-30 Direct_rx 30 tablets — AB FDA listed —
Guanfacine 1 mg 72888-0224-00 Advagen 1000 tablets — AB FDA listed —
About this product: this is a generic version of the medicine. FDA equivalence ratings are shown when available, and other versions are listed above, least expensive first.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

⏳ Availability & generic status

🏛️
2017
On the market since
Jul 2017
📍
2026
Currently FDA-listed
9 years listed
🔓
·
Generic on the market
this product is a generic
✅This is a generic drug

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?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

🔬 Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for Guanfacine Extended-Release (this brand).

Top reported reactions

Aggression185
Somnolence181
Toxicity To Various Agents179
Hypotension158
Fatigue156
Nausea150
Intentional Overdose148

Reporter sex

0 reports

Serious outcomes

Hospitalization1,019
Death172
Life-threatening170
Disabling74
Reports over time (by year) — tap or hover for the count & year
2019 2021 2023 2026 379 0
Most recent year is provisional (FAERS lags ~3 months).
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
71205-0944-00 100 TABLET, EXTENDED RELEASE in 1 BOTTLE (71205-944-00) 2020-11-19 Active
71205-0944-30 30 TABLET, EXTENDED RELEASE in 1 BOTTLE (71205-944-30) 2020-11-19 Active
71205-0944-55 You're viewing this 500 TABLET, EXTENDED RELEASE in 1 BOTTLE (71205-944-55) 2020-11-19 Active
71205-0944-60 60 TABLET, EXTENDED RELEASE in 1 BOTTLE (71205-944-60) 2020-11-19 Active
71205-0944-90 90 TABLET, EXTENDED RELEASE in 1 BOTTLE (71205-944-90) 2020-11-19 Active

You're viewing the largest of 5 pack sizes for this product.

Pack size FAQ

What quantity is in NDC 71205-0944-55?
NDC 71205-0944-55 is a 500-count package — 500 tablet, extended release in 1 bottle.
What is the difference between NDC 71205-0944-55 and NDC 71205-0944-30?
Both are Guanfacine Extended-Release 1 mg Tablet, Extended Release — the drug itself is identical. NDC 71205-0944-55 is the 500-count package, while NDC 71205-0944-30 is the 30 tablets package.
What NDC number is used to bill for this package of Guanfacine Extended-Release 1 mg Tablet, Extended Release?
Bill NDC 71205-0944-55 — the 11-digit billing format is 71205094455. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

🧭 About this NDC listing & data coverage

Finished prescription product
What data is (and isn’t) available for this NDC — tap to expand
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) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The FDA registers it as 71205-944-55, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 71205-0944-55, written without dashes as 71205094455. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 71205-0944-55, the first segment (71205) is the labeler code FDA assigned to Proficient Rx LP; the middle segment (0944) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (55) identifies this exact package size and type. Together they name one specific package of one specific product.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Proficient Rx LP. Listing status can change — the directory data on this page refreshes weekly.
Does this product come in other package sizes?
Yes — the FDA directory lists 4 other package presentations of this same product, including 30 tablets (71205-0944-30), 60 tablets (71205-0944-60), 90 tablets (71205-0944-90). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Proficient Rx LP is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.

📄 Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration 💊 Dosage Forms and Strengths ⛔ Contraindications ⚠️ Warnings and Cautions 🤒 Adverse Reactions 🔄 Drug Interactions 👥 Use in Specific Populations 🤰 Pregnancy 🧒 Pediatric Use 🧓 Geriatric Use 🆘 Overdosage 🧬 Clinical Pharmacology 🧬 Mechanism of Action 📦 How Supplied / Storage and Handling 📋 Description 💬 Information for Patients
🎯 Indications and Usage 69 words ▾

1 INDICATIONS AND USAGE Guanfacine extended-release tablets are indicated for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) as monotherapy and as adjunctive therapy to stimulant medications [ see CLINICAL STUDIES ( 14 ) ]. Guanfacine extended-release tablets are central alpha 2A -adrenergic receptor agonist indicated for the treatment of Attention Deficit Hyperactivity Disorder (ADHD) as monotherapyand as adjunctive therapy to stimulant medications ( 1 , 14 ) .

⏱️ Dosage and Administration ~3 min read ▾

2 DOSAGE AND ADMINISTRATION • Recommended dose: 1 mg to 7 mg (0.05-0.12 mg/kg target weight based dose range) once daily in the morning or evening based on clinical response and tolerability ( 2.2 ) . • Begin at a dose of 1 mg once daily and adjust in increments of no more than 1 mg/week ( 2.2 ) . • Do not crush, chew or break tablets before swallowing ( 2.1 ) . • Do not administer with high-fat meals, because of increased exposure ( 2.1 ) . • Do not substitute for immediate-release guanfacine tablets on a mg-per-mg basis, because of differing pharmacokinetic profiles ( 2.3 ) . • If switching from immediate-release guanfacine, discontinue that treatment and titrate with guanfacine extended-release tablets as directed ( 2.3 ) . • When discontinuing, taper the dose in decrements of no more than 1 mg every 3 to 7 days to avoid rebound hypertension ( 2.5 ) .

2.1General Instruction for Use Swallow tablets whole. Do not crush, chew, or break tablets because this will increase the rate of guanfacine release. Do not administer with high fat meals, due to increased exposure.

2.2Dose Selection Take guanfacine extended-release tablets orally once daily, either in the morning or evening, at approximately the same time each day. Begin at a dose of 1 mg/day, and adjust in increments of no more than 1 mg/week. Table 1: Recommended Target Dose Range for Therapy with Guanfacine Extended-Release Tablets Weight Target dose range (0.05 to 0.12 mg/kg/day) 25 to 33.9 kg 2 to 3 mg/day 34 to 41.4 kg 2 to 4 mg/day 41.5 to 49.4 kg 3 to 5 mg/day 49.5 to 58.4 kg 3 to 6 mg/day 58.5 to 91 kg 4 to 7 mg/day >91 kg 5 to 7 mg/day Doses above 4 mg/day have not been evaluated in children (ages 6 to 12 years) and doses above 7 mg/day have not been evaluated in adolescents (ages 13 to 17 years) In the adjunctive trial which evaluated guanfacine extended-release tablets treatment with psychostimulants, the majority of patients reached optimal doses in the 0.05 to 0.12 mg/kg/day range.

Doses above 4 mg/day have not been studied in adjunctive trials.

2.3Switching from Immediate-Release Guanfacine to Guanfacine Extended-Release Tablets If switching from immediate-release guanfacine, discontinue that treatment, and titrate with guanfacine extended-release tablets following above recommended schedule.

2.4Maintenance Treatment Pharmacological treatment of ADHD may be needed for extended periods. Healthcare providers should periodically re-evaluate the long-term use of guanfacine extended-release tablets, and adjust weight-based dosage as needed. The majority of children and adolescents reach optimal doses in the 0.05 to 0.12 mg/kg/day range.

Doses above 4 mg/day have not been evaluated in children (ages 6 to 12 years) and above 7 mg/day have not been evaluated in adolescents (ages 13 to 17 years) [see CLINICAL STUDIES ( 14 ) ] .

2.5Discontinuation of Treatment Following discontinuation of guanfacine extended-release tablets, patients may experience increases in blood pressure and heart rate [see Warnings and Precautions ( 5.4 ) and Adverse Reactions ( 6.1 ) ]. Patients/caregivers should be instructed not to discontinue guanfacine extended-release tablets without consulting their health care provider. Monitor blood pressure and pulse when reducing the dose or discontinuing the drug.

Taper the daily dose in decrements of no more than 1 mg every 3 to 7 days to minimize the risk of rebound hypertension.

2.6Missed Doses When reinitiating patients to the previous maintenance dose after two or more missed consecutive doses, consider titration based on patient tolerability.

2.7Dosage Adjustment with Concomitant Use of Strong and Moderate CYP3A4 Inhibitors or Inducers Dosage adjustments for guanfacine extended-release tablets are recommended with concomitant use of strong and moderate CYP3A4 inhibitors (e.g., ketoconazole), or CYP3A4 inducers (e.g., carbamazepine) ( Table 2 ) [see DRUG INTERACTIONS ( 7 ) ] . Table 2: Guanfacine Extended-Release Tablets Dosage Adjustments f…

💊 Dosage Forms and Strengths 30 words ▾

3 DOSAGE FORMS AND STRENGTHS 1 mg, 2 mg, 3 mg and 4 mg extended-release tablets Extended-release tablets: 1 mg, 2 mg, 3 mg and 4 mg ( 3 )

⛔ Contraindications 54 words ▾

4 CONTRAINDICATIONS Guanfacine extended-release tablets are contraindicated in patients with a history of a hypersensitivity reaction to guanfacine extended-release tablets or its inactive ingredients, or other products containing guanfacine. Rash and pruritus have been reported. History of hypersensitivity to guanfacine extended-release tablets, its inactive ingredients, or other products containing guanfacine ( 4 ) .

⚠️ Warnings and Cautions ~2 min read ▾

5 WARNINGS AND PRECAUTIONS • Hypotension, bradycardia, syncope: Titrate slowly and monitor vital signs frequently in patients at risk for hypotension, heart block, bradycardia, syncope, cardiovascular disease, vascular disease, cerebrovascular disease or chronic renal failure. Measure heart rate and blood pressure prior to initiation of therapy, following dose increases, and periodically while on therapy. Avoid concomitant use of drugs with additive effects unless clinically indicated.

Advise patients to avoid becoming dehydrated or overheated ( 5.1 ) . • Sedation and somnolence: Occur commonly with guanfacine extended-release tablets. Consider the potential for additive sedative effects with CNS depressant drugs. Caution patients against operating heavy equipment or driving until they know how they respond to guanfacine extended-release tablets ( 5.2 ) • Cardiac Conduction Abnormalities: May worsen sinus node dysfunction and atrioventricular (AV) block, especially in patients taking other sympatholytic drugs.

Titrate slowly and monitor vital signs frequently ( 5.3 ) . • Rebound Hypertension: Abrupt discontinuation of guanfacine extended-release tablets can lead to clinically significant and persistent rebound hypertension. Subsequent hypertensive encephalopathy was also reported. To minimize the risk of rebound hypertension upon discontinuation, the total daily dose of guanfacine extended-release tablets should be tapered in decrements of no more than 1 mg every 3 to 7 days ( 5.4 ) .

5.1Hypotension, Bradycardia, and Syncope Treatment with guanfacine extended-release tablets can cause dose-dependent decreases in blood pressure and heart rate. Decreases were less pronounced over time of treatment. Orthostatic hypotension and syncope have been reported [see Adverse Reactions ( 6.1 ) ] .

5.2Sedation and Somnolence Somnolence and sedation were commonly reported adverse reactions in clinical studies [see Adverse Reactions ( 6.1 ) ] . Before using guanfacine extended-release tablets with other centrally active depressants, consider the potential for additive sedative effects. Caution patients against operating heavy equipment or driving until they know how they respond to treatment with guanfacine extended-release tablets .

Advise patients to avoid use with alcohol.

5.3Cardiac Conduction Abnormalities The sympatholytic action of guanfacine extended-release tablets may worsen sinus node dysfunction and atrioventricular (AV) block, especially in patients taking other sympatholytic drugs. Titrate guanfacine extended-release tablets slowly and monitor vital signs frequently in patients with cardiac conduction abnormalities or patients concomitantly treated with other sympatholytic drugs.

5.4Rebound Hypertension In post marketing experience, abrupt discontinuation of guanfacine extended-release tablets has resulted in clinically significant and persistent rebound hypertension above baseline levels and increases in heart rate. Hypertensive encephalopathy has also been reported in association with rebound hypertension with both guanfacine extended-release tablets and immediate release guanfacine [see Adverse Reactions ( 6.2 ) ] . In these cases, high-dosage guanfacine was discontinued; concomitant stimulant use was also reported, which may potentially increase hypertensive response upon abrupt discontinuation of guanfacine.

Children commonly have gastrointestinal illnesses that lead to vomiting, and a resulting inability to take medications, so they may be especially at risk for rebound hypertension. To minimize the risk of rebound hypertension upon discontinuation, the total daily dose of guanfacine extended-release tablets should be tapered in decrements of no more than 1 mg every 3 to 7 days [see Dosage and Administration ( 2.5 ) ] . Blood pressure and heart rate should be monitored when reducing the dose or discontinuing guanfacine extended-release tablets.

If abrupt discontinuation occurs (especially with concomitant stimulant use…

🤒 Adverse Reactions ~3 min read ▾

6 ADVERSE REACTIONS The following serious adverse reactions are described elsewhere in the labeling: To report SUSPECTED ADVERSE REACTIONS, contact TWi Pharmaceuticals, Inc. 1-844-518-2989 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. Most common adverse reactions (≥5% and at least twice placebo rate) in fixed-dose monotherapy ADHD trials in children and adolescents (6 to 17 years): hypotension, somnolence, fatigue, nausea, and lethargy ( 6.1 ) .

Flexible dose-optimization ADHD trials in children (6 to 12 years) and adolescents (13 to 17 years): somnolence, hypotension, abdominal pain, insomnia, fatigue, dizziness, dry mouth, irritability, nausea, vomiting, and bradycardia ( 6.1 ) . Adjunctive treatment to psychostimulant ADHD trial in children and adolescents (6 to 17 years): somnolence, fatigue, insomnia, dizziness, and abdominal pain ( 6.1 ) . To report SUSPECTED ADVERSE REACTIONS, contact TWi Pharmaceuticals, Inc.

1-844-518-2989 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. Fixed Dose Trials Table 3: Percentage of Patients Experiencing Most Common (≥ 5% and at least twice the rate for placebo) Adverse Reactions in Fixed Dose Studies 1 and 2 Guanfacine Extended-Release Tablets (mg) Adverse Reaction Term Placebo (N=149) 1mg* (N=61) 2mg (N=150) 3mg (N=151) 4mg (N=151) All Doses of guanfacine extended-release tablets (N=513) Somnolence a 11% 28% 30% 38% 51% 38% Fatigue 3% 10% 13% 17% 15% 14% Hypotension b 3% 8% 5% 7% 8% 7% Dizziness 4% 5% 3% 7% 10% 6% Lethargy 3% 2% 3% 8% 7% 6% Nausea 2% 7% 5% 5% 6% 6% Dry mouth 1% 0% 1% 6% 7% 4% *The lowest dose of 1 mg used in Study 2 was not randomized to patients weighing more than 50 kg. a: The somnolence term includes somnolence, sedation, and hypersomnia. b: The hypotension term includes hypotension, diastolic hypotension, orthostatic hypotension, blood pressure decreased, blood pressure diastolic decreased, blood pressure systolic decreased).

Table 4: Adverse Reactions Leading to Discontinuation (≥ 2% for all doses of guanfacine extended-release tablets and > rate than in placebo) in Fixed Dose Studies 1 and 2 Guanfacine Extended-Release Tablets (mg) Adverse Reaction Term Placebo (N=149) 1mg* (N=61) 2mg (N=150) 3mg (N=151) 4mg (N=151) All Doses of guanfacine extended-release tablets (N=513) n (%) n (%) n (%) n (%) n (%) n (%) Total patients 4 (3%) 2 (3%) 10 (7%) 15 (10%) 27 (18%) 54 (11%) Somnolence a 1 (1%) 2 (3%) 5 (3%) 6 (4%) 17 (11%) 30 (6%) Fatigue 0 (0%) 0 (0%) 2 (1%) 2 (1%) 4 (3%) 8 (2%) Adverse reactions leading to discontinuation in ≥ 2% in any dose group but did not meet this criteria in all doses combined: hypotension (hypotension, diastolic hypotension, orthostatic hypotension, blood pressure decreased, blood pressure diastolic decreased, blood pressure systolic decreased), headache, and dizziness. * The lowest dose of 1 mg used in Study 2 was not randomized to patients weighing more than 50 kg. a: The somnolence term includes somnolence, sedation, and hypersomnia.

Table 5: Other Common Adverse Reactions (≥ 2% for all doses of guanfacine extended-release tablets and > rate than in placebo) in Fixed Dose Studies 1 and 2 Guanfacine Extended-Release Tablets (mg) Adverse Reaction Term Placebo (N=149) 1mg* (N=61) 2mg (N=150) 3mg (N=151) 4mg (N=151) All Doses of guanfacine extended-release tablets (N=513) Headache 19% 26% 25% 16% 28% 23% Abdominal Pain a 9% 10% 7% 11% 15% 11% Decreased Appetite 4% 5% 4% 9% 6% 6% Irritability 4% 5% 8% 3% 7% 6% Constipation 1% 2% 2% 3% 4% 3% Nightmare b 0% 0% 0% 3% 4% 2% Enuresis c 1% 0% 1% 3% 2% 2% Affect Lability d 1% 2% 1% 3% 1% 2% Adverse reactions ≥ 2% for all doses of guanfacine extended-release tablets and > rate in placebo in any dose group bu…

🔄 Drug Interactions 193 words ▾

7 DRUG INTERACTIONS Table 14 contains clinically important drug interactions with guanfacine extended-release tablets [see Clinical Pharmacology ( 12.3 ) ] . Table 14: Clinically Important Drug Interactions: Effect of other Drugs on Guanfacine Extended-Release Tablets Concomitant Drug Name or Drug Class Clinical Rationale and Magnitude of Drug Interaction Clinical Recommendation Strong and moderate CYP3A4 inhibitors, e.g., ketoconazole, fluconazole Guanfacine is primarily metabolized by CYP3A4 and its plasma concentrations can be significantly affected resulting in an increase in exposure Consider dose reduction [see Dosage and administration ( 2.7 ) ] Strong and moderate CYP3A4 inducers, e.g., rifampin, efavirenz Guanfacine is primarily metabolized by CYP3A4 and its plasma concentrations can be significantly affected resulting in a decrease in exposure Consider dose increase [see Dosage and administration ( 2.7 ) ] • Strong and moderate CYP3A4 inhibitors increase guanfacine exposure.

Decrease guanfacine extended-release tablets to 50% of target dosage when coadministered with strong and moderate CYP3A4 inhibitors ( 2.7 ) . • Strong and moderate CYP3A4 inducers decrease guanfacine exposure. Based on patient response, consider titrating guanfacine extended-release tablets dosage up to double the target dosage over 1 to 2 weeks ( 2.7 ) .

👥 Use in Specific Populations ~2 min read ▾

8 USE IN SPECIFIC POPULATIONS

8.1Pregnancy Pregnancy Category B Risk Summary There are no adequate and well-controlled studies of guanfacine extended-release tablets in pregnant women. No fetal harm was observed in rats and rabbits with administration of guanfacine at 4 and 2.7 times, respectively, the maximum recommended human dose. Because animal studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

Animal data Reproduction studies conducted in rats have shown that guanfacine crosses the placenta. However, administration of guanfacine to rats and rabbits at 4 and 2.7 times, respectively, the maximum recommended human dose of 0.12 mg/kg/day on a mg/m 2 basis resulted in no evidence of harm to the fetus. Higher doses (13.5 times the maximum recommended human dose in both rabbits and rats) were associated with reduced fetal survival and maternal toxicity.

8.3Nursing Mothers It is not known whether guanfacine is excreted in human milk; however, guanfacine is excreted in rat milk. Because many drugs are excreted in human milk, caution should be exercised when guanfacine extended-release tablets are administered to a nursing woman. Observe human milk-fed infants for sedation and somnolence.

8.4Pediatric Use Safety and efficacy of guanfacine extended-release tabletsin pediatric patients less than 6 years of age have not been established. The efficacy of guanfacine extended-release tablets was studied for the treatment of ADHD in five controlled monotherapy clinical trials (up to 15 weeks in duration), one randomized withdrawal study and one controlled adjunctive trial with psychostimulants (8 weeks in duration) in children and adolescents ages 6 to 17 who met DSM-IV ® criteria for ADHD [see ADVERSE REACTIONS ( 6 ) and CLINICAL STUDIES ( 14 ) ] .

Animal Data In studies in juvenile rats, guanfacine alone produced a slight delay in sexual maturation in males and females at 2 to 3 times the maximum recommended human dose (MRHD). Guanfacine in combination with methylphenidate produced a slight delay in sexual maturation and decreased growth as measured by a decrease in bone length in males at a dose of guanfacine comparable to the MRHD and a dose of methylphenidate approximately 4 times the MRHD. In a study where juvenile rats were treated with guanfacine alone from 7 to 59 days of age, development was delayed as indicated by a slight delay in sexual maturation and decreased body weight gain in males at 2 mg/kg/day and in females at 3 mg/kg/day.

The No Adverse Effect Level (NOAEL) for delayed sexual maturation was 1 mg/kg/day, which is equivalent to the MRHD of 4 mg/day, on a mg/m 2 basis. The effects on fertility were not evaluated in this study.

8.5Geriatric Use The safety and efficacy of guanfacine extended-release tablets in geriatric patients have not been established.

8.6Renal Impairment It may be necessary to reduce the dosage in patients with significant impairment of renal function [see Clinical Pharmacology ( 12.3 ) ] .

8.7Hepatic Impairment It may be necessary to reduce the dosage in patients with significant impairment of hepatic function [see Clinical Pharmacology ( 12.3 ) ] .

🤰 Pregnancy 139 words ▾

8.1Pregnancy Pregnancy Category B Risk Summary There are no adequate and well-controlled studies of guanfacine extended-release tablets in pregnant women. No fetal harm was observed in rats and rabbits with administration of guanfacine at 4 and 2.7 times, respectively, the maximum recommended human dose. Because animal studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

Animal data Reproduction studies conducted in rats have shown that guanfacine crosses the placenta. However, administration of guanfacine to rats and rabbits at 4 and 2.7 times, respectively, the maximum recommended human dose of 0.12 mg/kg/day on a mg/m 2 basis resulted in no evidence of harm to the fetus. Higher doses (13.5 times the maximum recommended human dose in both rabbits and rats) were associated with reduced fetal survival and maternal toxicity.

🧒 Pediatric Use ~1 min read ▾

8.4Pediatric Use Safety and efficacy of guanfacine extended-release tabletsin pediatric patients less than 6 years of age have not been established. The efficacy of guanfacine extended-release tablets was studied for the treatment of ADHD in five controlled monotherapy clinical trials (up to 15 weeks in duration), one randomized withdrawal study and one controlled adjunctive trial with psychostimulants (8 weeks in duration) in children and adolescents ages 6 to 17 who met DSM-IV ® criteria for ADHD [see ADVERSE REACTIONS ( 6 ) and CLINICAL STUDIES ( 14 ) ] .

Animal Data In studies in juvenile rats, guanfacine alone produced a slight delay in sexual maturation in males and females at 2 to 3 times the maximum recommended human dose (MRHD). Guanfacine in combination with methylphenidate produced a slight delay in sexual maturation and decreased growth as measured by a decrease in bone length in males at a dose of guanfacine comparable to the MRHD and a dose of methylphenidate approximately 4 times the MRHD. In a study where juvenile rats were treated with guanfacine alone from 7 to 59 days of age, development was delayed as indicated by a slight delay in sexual maturation and decreased body weight gain in males at 2 mg/kg/day and in females at 3 mg/kg/day.

The No Adverse Effect Level (NOAEL) for delayed sexual maturation was 1 mg/kg/day, which is equivalent to the MRHD of 4 mg/day, on a mg/m 2 basis. The effects on fertility were not evaluated in this study.

🧓 Geriatric Use 18 words ▾

8.5Geriatric Use The safety and efficacy of guanfacine extended-release tablets in geriatric patients have not been established.

🆘 Overdosage 148 words ▾

10 OVERDOSAGE Symptoms Postmarketing reports of guanfacine overdosage indicate that hypotension, drowsiness, lethargy, and bradycardia have been observed following overdose. Initial hypertension may develop early and may be followed by hypotension. Similar symptoms have been described in voluntary reports to the American Association of Poison Control Center's National Poison Data System.

Miosis of the pupils may be noted on examination. No fatal overdoses of guanfacine have been reported in published literature. Treatment Consult a Certified Poison Control Center by calling 1-800-222-1222 for up-to-date guidance and advice.

Management of guanfacine extended-release tablets overdose should include monitoring for and the treatment of initial hypertension, if that occurs, as well as hypotension, bradycardia, lethargy and respiratory depression. Children and adolescents who develop lethargy should be observed for the development of more serious toxicity including coma, bradycardia and hypotension for up to 24 hours, due to the possibility of delayed onset hypotension.

🧬 Clinical Pharmacology ~3 min read ▾

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Guanfacine is a central alpha 2A -adrenergic receptor agonist. Guanfacine is not a central nervous system (CNS) stimulant. The mechanism of action of guanfacine in ADHD is not known.

12.2Pharmacodynamics Guanfacine is a selective central alpha 2A -adrenergic receptor agonist in that it has a 15 to 20 times higher affinity for this receptor subtype than for the alpha 2B or alpha 2C subtypes. In a thorough QT study, the administration of two dose levels of immediate-release guanfacine (4 mg and 8 mg) produced concentrations approximately 2 to 4 times the concentrations observed with the maximum recommended dose of guanfacine extended-release tablets of 0.12 mg/kg. Guanfacine was not shown to prolong the QTc interval to any clinically relevant extent.

12.3Pharmacokinetics Absorption and Distribution Guanfacine is readily absorbed and approximately 70% bound to plasma proteins independent of drug concentration. After oral administration of guanfacine extended-release tablets the time to peak plasma concentration is approximately 5 hours in children and adolescents with ADHD. Immediate-release guanfacine and guanfacine extended-release tablets have different pharmacokinetic characteristics; dose substitution on a milligram per milligram basis will result in differences in exposure.

A comparison across studies suggests that the C max is 60% lower and AUC 0-∞ 43% lower, respectively, for guanfacine extended-release tablets compared to immediate-release guanfacine. Therefore, the relative bioavailability of guanfacine extended-release tablets to immediate-release guanfacine is 58%. The mean pharmacokinetic parameters in adults following the administration of guanfacine extended-release tablets 1 mg once daily and immediate-release guanfacine 1 mg once daily are summarized in Table 15 .

Table 15: Comparison of Pharmacokinetics: Guanfacine Extended-Release Tablets vs. Immediate release Guanfacine in Adults Parameter Guanfacine Extended-Release Tablets 1 mg once daily (n=52) Immediate-release guanfacine 1 mg once daily (n=12) C max (ng/mL) 1.0 ± 0.3 2.5 ±

0.6AUC 0-∞ (ng∙h/mL) 32 ± 9 56 ± 15 t max (h) 6.0 (4.0 - 8.0) 3.0 (1.5-4.0) t ½ (h) 18 ± 4 16 ± 3 Note: Values are mean +/- SD, except for t max which is median (range) Figure 1: Comparison of Pharmacokinetics: Guanfacine Extended-Release Tablets vs. Immediate-release guanfacine in Adults Exposure to guanfacine was higher in children (ages 6 to 12) compared to adolescents (ages 13 to 17) and adults. After oral administration of multiple doses of guanfacine extended-release tablets 4 mg, the C max was 10 ng/mL compared to 7 ng/mL and the AUC was 162 ng∙h/mL compared to 116 ng∙h/mL in children (ages 6 to 12) and adolescents (ages 13 to 17), respectively.

These differences are probably attributable to the lower body weight of children compared to adolescents and adults. The pharmacokinetics were affected by intake of food when a single dose of guanfacine extended-release tablets 4 mg was administered with a high-fat breakfast. The mean exposure increased (C max ~75% and AUC ~40%) compared to dosing in a fasted state.

Dose Proportionality Following administration of guanfacine extended-release tablets in single doses of 1 mg, 2 mg, 3 mg, and 4 mg to adults, C max and AUC 0-∞ of guanfacine were proportional to dose. Metabolism and Elimination In vitro studies with human liver microsomes and recombinant CYP's demonstrated that guanfacine was primarily metabolized by CYP3A4. In pooled human hepatic microsomes, guanfacine did not inhibit the activities of the major cytochrome P450 isoenzymes (CYP1A2,CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6 or CYP3A4/5); guanfacine is also not an inducer of CYP3A, CYP1A2 and CYP2B6.

Guanfacine is a substrate of CYP3A4/5 and exposure is affected by CYP3A4/5 inducers/inhibitors. Guanfacine inhibits MATE1 and OCT1, but does not inhibit BSEP, MRP2, OATP1B1, OATP1B3, OAT1, OAT3, OCT2, or MATE2K. Guanfacine is a subs…

🧬 Mechanism of Action 33 words ▾

12.1Mechanism of Action Guanfacine is a central alpha 2A -adrenergic receptor agonist. Guanfacine is not a central nervous system (CNS) stimulant. The mechanism of action of guanfacine in ADHD is not known.

📦 How Supplied / Storage and Handling 141 words ▾

16 HOW SUPPLIED/STORAGE AND HANDLING Guanfacine extended-release tablets are supplied in 1 mg, 2 mg, 3 mg, and 4 mg strength extended-release tablets in 30, 60, 90, 100, and 500 count bottles. 1 mg 2 mg 3 mg 4 mg Color White White Blue Blue Shape Round Caplet Round Caplet Debossment (top/bottom) A533/ 1 mg A534/ 2 mg A536/ 3 mg A538/ 4 mg NDC number 30 count: 71205-944-30 60 count: 71205-944-60 90 count: 71205-944-90 30 count: 71205-945-30 60 count: 71205-945-60 90 count: 71205-945-90 30 count: 71205-946-30 60 count: 71205-946-60 90 count: 71205-946-90 30 count: 71205-947-30 60 count: 71205-947-60 90 count: 71205-947-90 100 count: 71205-944-00 500 count: 71205-944-55 100 count: 71205-945-00 500 count: 71205-945-55 100 count: 71205-946-00 500 count: 71205-946-55 100 count: 71205-947-00 500 count: 71205-947-55 Storage - Store at 20° to 25°C (68° to 77°F). [see USP Controlled Room Temperature].

📋 Description 142 words ▾

11 DESCRIPTION Guanfacine extended-release tablets are once-daily, extended-release formulation of guanfacine hydrochloride (HCl) in a matrix tablet formulation for oral administration only. The chemical designation is N-amidino-2-(2,6-dichlorophenyl) acetamide monohydrochloride. The molecular formula is C 9 H 9 Cl 2 N 3 O·HCl corresponding to a molecular weight of 282.55.

The chemical structure is: Guanfacine HCl is a white to off-white crystalline powder, sparingly soluble in water (approximately 1 mg/mL) and alcohol and slightly soluble in acetone. The only organic solvent in which it has relatively high solubility is methanol (>30 mg/mL). Each tablet contains guanfacine HCl equivalent to 1 mg, 2 mg, 3 mg, or 4 mg of guanfacine base.

The tablets also contain microcrystalline cellulose, hypromellose, polyvinyl acetate, povidone, lactose monohydrate, magnesium stearate, sodium lauryl sulfate and silica. In addition, the 3-mg and 4-mg tablets also contain FD&C Blue #1. molecular-structure.jpg

💬 Information for Patients ~3 min read ▾

17 PATIENT COUNSELING INFORMATION Advise the patient to read theFDA-approved patient labeling (Patient Information). Dosing and Administration Instruct patients to swallow guanfacine extended-release tablets whole with water, milk or other liquid. Tablets should not be crushed, chewed or broken prior to administration because this may increase the rate of release of the active drug.

Patients should not take guanfacine extended-release tablets together with a high-fat meal, since this can raise blood levels of guanfacine extended-release tablets. Instruct the parent or caregiver to supervise the child or adolescent taking guanfacine extended-release tablets and to keep the bottle of tablets out of reach of children. Adverse Reactions Advise patients that sedation can occur, particularly early in treatment or with dose increases.

Caution against operating heavy equipment or driving until they know how they respond to treatment with guanfacine extended-release tablets [see Warnings and Precautions ( 5.2 ) ] . Headache and abdominal pain can also occur. If any of these symptoms persist, or other symptoms occur, the patient should be advised to discuss the symptoms with the health care provider.

Patient Information Guanfacine Extended-Release Tablets (gwahn-fa-seen) Read the Patient Information that comes with guanfacine extended-release tablets before you start taking it and each time you get a refill. There may be new information. This leaflet does not take the place of talking with your doctor about your medical condition or your treatment.

What are guanfacine extended-release tablets? Guanfacine extended-release tablets are prescription medicine used to treat the symptoms of attention deficit hyperactivity disorder (ADHD). Guanfacine extended-release tablets may be used alone or with ADHD stimulant medicines.

Guanfacine extended-release tablets are not central nervous system (CNS) stimulant. It is not known if guanfacine extended-release tablets are safe and effective in children younger than 6 years of age. Who should not take guanfacine extended-release tablets?

Do not take guanfacine extended-release tablets if you are allergic to guanfacine or any of the ingredients in guanfacine extended-release tablets. See the end of this leaflet for a complete list of ingredients in guanfacine extended-release tablets. What should I tell my doctor before taking guanfacine extended-release tablets?

Before you take guanfacine extended-release tablets, tell your doctor if you: • have heart problems or a low heart rate • have fainted • have low or high blood pressure • have liver or kidney problems • have any other medical conditions • are pregnant or plan to become pregnant. It is not known if guanfacine extended-release tablets will harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. • are breastfeeding or plan to breastfeed.

It is not known if guanfacine extended-release tablets pass into your breast milk. Talk to your doctor about the best way to feed your baby while taking guanfacine extended-release tablets. Tell your doctor about all of the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Guanfacine extended-release tablets may affect the way other medicines work, and other medicines may affect how guanfacine extended-release tablets work. Especially tell your doctor if you take: • ketoconazole • medicines that can affect enzyme metabolism • high blood pressure medicine • sedatives • benzodiazepines • barbiturates • antipsychotics Ask your doctor or pharmacist for a list of these medicines, if you are not sure. Know the medicines you take.

Keep a list of them and show it to your doctor and pharmacist when you get a new medicine. How should I take guanfacine extended-release tablets? • Take guanfacine extended-release tablets exactly as your doctor tells you. • Your doctor may change your dose. Do not change your dose of guanfacine exten…

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗
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