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Memantine and Donepezil Hydrochlorides Extended-release 21 mg; 10 mg Capsule, Extended Release, 90-count

by Amneal Pharmaceuticals NY LLC · 90 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (69238-1553-9)

NDC 69238-1553-09

🏷️ FDA NDC (as labeled) 69238-1553-9 billing pads the package segment with a zero

This package

Contains90-count Pack sizes2 compare ↓

Also priced by: Part D plans $14.26/unit — full pricing hub ↓

Also comes in: 30 capsules 69238-1553-03

Rx only Generic On market Non-controlled

🗂️ Data synced Sep 17, 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 Dr. Brian Staiger, PharmD

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

🆔 Identity & classification

FDA NDC (as labeled) 69238-1553-9

Product NDC 69238-1553

11-digit billing NDC 69238155309

RxCUI 1599803, 1599805, 1805420, 1805425

UNII JY0WD0UA60, 3O2T2PJ89D

UPC 0369238124897, 0369238155396, 0369238124798, 0369238155297

Application # ANDA208328

SPL Set ID 2335950c-be3b-4248-ad04-e9763aee47d2

Established class (EPC) Cholinesterase Inhibitor; N-methyl-D-aspartate Receptor Antagonist

Mechanism of action Cholinesterase Inhibitors; NMDA Receptor Antagonists

DEA schedule Non-controlled

Marketing category ANDA

Marketing status On market

FDA listing status Listed (active directory)

Marketing start 2017-02-01

Route ORAL

Dosage form CAPSULE, EXTENDED RELEASE

Substance MEMANTINE HYDROCHLORIDE; DONEPEZIL HYDROCHLORIDE

TE code (Orange Book) AB · RLD · RS

Why two NDCs? The FDA registers this code as 69238-1553-9 — a 5-4-1 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 package segment → 69238-1553-09. 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 Cholinesterase Inhibitor class.

Pharmacologic class Cholinesterase Inhibitor

Drug family (ATC) Anticholinesterases

How it works Cholinesterase Inhibitors

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

LabelerAmneal Pharmaceuticals NY LLC

Application holderAMNEAL PHARMACEUTICALS LLC

FDA applicationANDA208328 (ANDA)

Labeler code69238

First marketedFeb 2017

Product typeHuman Prescription Drug

Portfolio372 products on file

🔎 All NDCs from Amneal Pharmaceuticals NY LLC

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

📖 What it is MedlinePlus · NLM

Donepezil is used to treat Alzheimer's disease (AD; a brain disease that affects memory, thinking, and behavior). Donepezil is in a class of medications called cholinesterase inhibitors. It works by increasing the amount of a certain naturally occurring substance in the brain that play a role in mental function.

Read the full MedlinePlus article ↗

📗 Our plain-language guide HelloPharmacist

This combination medicine brings together two drugs that work in different ways to help manage the symptoms of moderate to severe Alzheimer's dementia. One ingredient, memantine, t...
What exactly does this medication do for Alzheimer's disease?
You take it once in the evening, every day. You can take it with or without food — whatever is easiest for you. If you or your loved one has trouble swallowing capsules, you can ca...
When and how should I take this capsule?

📖 Read our full Donepezil / Memantine guide →

Patient education

📘 MedlinePlus patient leaflet ↗

Supplement & herbal interactions

🌿 Drug–supplement interaction checker →

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 green / yellow / white

ShapeCapsule

ImprintAN;1553

Size2 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 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.
UNII 5138Q19F1X
Ammonia is a colorless gas made from nitrogen and hydrogen. It's used in medicines as a pH buffer to maintain the correct acidity level and help keep the product stable.
UNII 8PJ61P6TS3
Butyl alcohol is a clear liquid organic solvent derived from petroleum or natural sources. In medicines, it helps dissolve active ingredients and serves as a solvent in liquid formulations and some topical products.
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.
UNII 7Z8S9VYZ4B
Ethylcellulose is a plant-derived thickener and film-former made by chemically modifying cellulose. It's used as a binder to hold tablet ingredients together, a coating to control how quickly medicine is released, or a thickener in liquid formulations.
UNII WZB9127XOA
A synthetic red dye used to color medications and make them easier to identify. It serves as a colorant in tablets, capsules, and liquid formulations.
UNII XM0M87F357
A dark iron oxide compound that gives medicines their black or dark color. It's used as a colorant in tablets and capsules to help identify the product and make it visually distinctive.
UNII 2G86QN327L
Gelatin is a protein derived from animal collagen, commonly used in medicines as a gelling agent and capsule material. It helps create soft or hard capsule shells that hold and release medication, and can also thicken liquid formulations.
UNII 2165RE0K14
A plant-based thickener made from cellulose that helps control how quickly the medicine dissolves and releases its active ingredient. It also binds ingredients together and improves the tablet's texture and handling during manufacturing.
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 ND2M416302
Isopropyl alcohol is a clear liquid solvent derived from petroleum. In medicines, it dissolves active ingredients and other components, helps the product flow smoothly, and aids in sterilization during manufacturing.
UNII WZH3C48M4T
Potassium hydroxide is a strong alkaline chemical used in medicines to adjust and maintain the pH level of liquid formulations, helping keep the product stable and the active ingredients effective.
UNII 6DC9Q167V3
Propylene glycol is a clear liquid derived from petroleum or vegetable sources. It acts as a solvent, humectant, and preservative in medicines, helping dissolve active ingredients and maintain product stability.
UNII 46N107B71O
Shellac is a natural resin secreted by the lac beetle. It's used as a coating on tablets and capsules to control how quickly the medicine dissolves and to improve appearance and stability.
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 55X04QC32I
A strong alkaline chemical used to adjust and maintain the pH balance of liquid medicines. It helps keep the medicine stable and ensures it stays effective during 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.
UNII O8232NY3SJ
A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
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.
UNII 7SEV7J4R1U
A powder made from a naturally occurring mineral. In medicines, talc works as a glidant and anti-caking agent, helping tablets and capsules flow smoothly during manufacturing and preventing clumping.
UNII 15FIX9V2JP
Titanium dioxide is a bright white mineral powder commonly used as a colorant and opacifying agent. It makes pills and tablets white or lighter in color and helps make coatings non-transparent.
UNII 8Z96QXD6UM
Triethyl citrate is a clear liquid derived from citric acid. It acts as a plasticizer and solvent in tablet coatings and film formulations, helping the coating remain flexible and adhere properly to the medicine.
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.

23 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 system	Per each	Per 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	$14.26	$1,283.60 / 90 capsules

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

Product	Labeler	Pack	NADAC/unit	TE	Status	Price vs. this
Namzaric 21 mg/1; 10 mg 00456-1221-30	Allergan,	30 capsules	$19.957	AB	Availability likely	—
Memantine And Donepezil Hydrochlorides 21 mg/1; 10 mg 62559-0207-30	ANI	30 capsules	—	AB	FDA listed	—
Memantine and Donepezil Hydrochlorides Extended-release 21 mg/1; 10 mgthis 69238-1553-09	Amneal	90 capsules	—	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

Feb 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 Memantine and Donepezil Hydrochlorides Extended-release (this brand).

Top reported reactions

Interstitial Lung Disease1

Pleural Effusion1

Pulmonary Oedema1

Pulmonary Toxicity1

Reporter sex

Female · 100%

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 NDC	Description	Marketing start	Status
69238-1553-03	30 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (69238-1553-3)	2017-02-01	Active
69238-1553-09 You're viewing this	90 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (69238-1553-9)	2017-02-01	Active

You're viewing the largest of 2 pack sizes for this product.

Pack size FAQ

What quantity is in NDC 69238-1553-09?

NDC 69238-1553-09 is a 90-count package — 90 capsule, extended release in 1 bottle.

What is the difference between NDC 69238-1553-09 and NDC 69238-1553-03?

Both are Memantine and Donepezil Hydrochlorides Extended-release 21 mg; 10 mg Capsule, Extended Release — the drug itself is identical. NDC 69238-1553-09 is the 90-count package, while NDC 69238-1553-03 is the 30 capsules package.

What NDC number is used to bill for this package of Memantine and Donepezil Hydrochlorides Extended-release 21 mg; 10 mg Capsule, Extended Release?

Bill NDC 69238-1553-09 — the 11-digit billing format is 69238155309. 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 69238-1553-9, 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: 69238-1553-09, written without dashes as 69238155309. 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 69238-1553-09, the first segment (69238) is the labeler code FDA assigned to Amneal Pharmaceuticals NY LLC; the middle segment (1553) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (09) 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 Amneal Pharmaceuticals NY LLC. 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 1 other package presentation of this same product, including 30 capsules (69238-1553-03). 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?

Amneal Pharmaceuticals NY LLC 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 82 words ▾

1 INDICATIONS AND USAGE Memantine and donepezil hydrochlorides extended-release capsules are indicated for the treatment of moderate to severe dementia of the Alzheimer’s type in patients stabilized on 10 mg of donepezil hydrochloride once daily. Memantine and donepezil hydrochlorides extended-release capsules are a combination of memantine hydrochloride, an NMDA receptor antagonist, and donepezil hydrochloride, an acetylcholinesterase inhibitor, indicated for the treatment of moderate to severe dementia of the Alzheimer’s type in patients stabilized on 10 mg of donepezil hydrochloride once daily.

(1)

⏱️ Dosage and Administration ~3 min read ▾

2 DOSAGE AND ADMINISTRATION For patients on donepezil hydrochloride 10 mg only, the recommended starting dose of memantine and donepezil hydrochlorides extended-release capsules is 7 mg/10 mg, taken once daily in the evening. The dose should be increased in 7 mg increments to the recommended maintenance dose of 28 mg/10 mg. The minimum recommended interval between dose increases is one week.

(2.1) Patients on memantine hydrochloride (10 mg twice daily or 28 mg extended-release once daily) and donepezil hydrochloride 10 mg once daily can be switched to memantine and donepezil hydrochlorides extended-release capsules 28 mg/10 mg, taken once daily in the evening. (2.1) Memantine and donepezil hydrochlorides extended-release capsules can be taken with or without food, whole or sprinkled on applesauce; do not divide, chew, or crush. (2.2) Severe renal impairment: the recommended maintenance dose for memantine and donepezil hydrochlorides extended-release capsules is 14 mg/10 mg once daily in the evening.

(2.3)

2.1Recommended Dosing The recommended dose of memantine and donepezil hydrochlorides extended-release capsules is 28 mg/10 mg once daily. For patients stabilized on donepezil and not currently on memantine: For patients stabilized on donepezil hydrochloride 10 mg and not currently on memantine hydrochloride, the recommended starting dose of memantine and donepezil hydrochlorides extended-release capsules is 7 mg/10 mg, taken once a day in the evening. The dose should be increased in 7 mg increments of the memantine hydrochloride component to the recommended maintenance dose of 28 mg/10 mg once daily.

The minimum recommended interval between dose increases is one week. The dose should only be increased if the previous dose has been well tolerated. The maximum dose is 28 mg/10 mg once daily.

For patients stabilized on both donepezil and memantine: Patients stabilized on memantine hydrochloride (10 mg twice daily or 28 mg extended-release once daily) and donepezil hydrochloride 10 mg once daily can be switched to memantine and donepezil hydrochlorides extended-release capsules 28 mg/10 mg, taken once a day in the evening. Patients should start memantine and donepezil hydrochlorides extended-release capsules the day following the last dose of memantine and donepezil hydrochlorides extended-release administered separately.

If a patient misses a single dose of memantine and donepezil hydrochlorides extended-release capsules, the next dose should be taken as scheduled, without doubling up the dose.

2.2Administration Information Memantine and donepezil hydrochlorides extended-release capsules can be taken with or without food. Memantine and donepezil hydrochlorides extended-release capsules can be taken intact or may be opened, sprinkled on applesauce, and swallowed without chewing. The entire contents of each memantine and donepezil hydrochlorides extended-release capsule should be consumed; the dose should not be divided.

Except when opened and sprinkled on applesauce, as described above, memantine and donepezil hydrochlorides extended-release capsules should be swallowed whole. Memantine and donepezil hydrochlorides extended-release capsules should not be divided, chewed, or crushed.

2.3Dosing in Patients with Severe Renal Impairment For patients stabilized on donepezil and not currently on memantine: For patients with severe renal impairment (creatinine clearance 5 to 29 mL/min, based on the Cockcroft-Gault equation), stabilized on donepezil hydrochloride 10 mg once daily and not currently on memantine hydrochloride, the recommended starting dose of memantine and donepezil hydrochlorides extended-release capsules is 7 mg/10 mg taken once a day in the evening. The dose should be increased to the recommended maintenance dose of 14 mg/10 mg once daily in the evening after a minimum of one week [see Use in Specific Populations (8.6) ] .

For patients stabilized on both donepezil and memantine: Patients with severe renal impairment,…

💊 Dosage Forms and Strengths ~1 min read ▾

3 DOSAGE FORMS AND STRENGTHS Memantine and donepezil hydrochlorides extended-release capsules: 7 mg memantine hydrochloride extended-release/10 mg donepezil hydrochloride capsules: Two piece hard gelatin capsules with green opaque cap and white opaque body filled with white to off- white pellets. Imprinted in black ink AN on the cap and imprinted in black ink 1552 on the body. 14 mg memantine hydrochloride extended-release/10 mg donepezil hydrochloride capsules: Two-piece hard gelatin capsules with green opaque cap and green opaque body filled with white to off-white pellets.

Imprinted in white ink AN on the cap and imprinted in white ink 1248 on the body. 21 mg memantine hydrochloride extended-release/10 mg donepezil hydrochloride capsules: Two piece hard gelatin capsules with yellow opaque cap and white opaque body filled with white to off-white pellets. Imprinted in black ink AN on the cap and imprinted in black ink 1553 on the body.

28 mg memantine hydrochloride extended-release/10 mg donepezil hydrochloride capsules: Two-piece hard gelatin capsules with yellow opaque cap and yellow opaque body filled with white to off-white pellets. Imprinted in black ink AN on the cap and imprinted in black ink 1247 on the body. Memantine and donepezil hydrochlorides extended-release capsules: 7 mg memantine hydrochloride and 10 mg donepezil hydrochloride (3) 14 mg memantine hydrochloride and 10 mg donepezil hydrochloride (3) 21 mg memantine hydrochloride and 10 mg donepezil hydrochloride (3) 28 mg memantine hydrochloride and 10 mg donepezil hydrochloride (3)

⛔ Contraindications 59 words ▾

4 CONTRAINDICATIONS Memantine and donepezil hydrochlorides extended-release capsules are contraindicated in patients with known hypersensitivity to memantine hydrochloride, donepezil hydrochloride, piperidine derivatives, or to any excipients used in the formulation. Memantine and donepezil hydrochlorides extended-release capsules are contraindicated in patients with known hypersensitivity to memantine hydrochloride, donepezil hydrochloride, piperidine derivatives, or to any excipients used in the formulation. (4)

⚠️ Warnings and Cautions ~2 min read ▾

5 WARNINGS AND PRECAUTIONS Memantine and donepezil hydrochlorides extended-release is likely to exaggerate succinylcholine-type muscle relaxation during anesthesia. (5.1) Memantine and donepezil hydrochlorides extended-release may have vagotonic effects on the sinoatrial and atrioventricular nodes manifesting as bradycardia or heart block. (5.2) Monitor patients for symptoms of active or occult gastrointestinal bleeding, especially those at increased risk for developing ulcers.

(5.3) Memantine and donepezil hydrochlorides extended-release can cause diarrhea, nausea, and vomiting. (5.4) Memantine and donepezil hydrochlorides extended-release may cause bladder outflow obstructions. (5.5) Conditions that raise urine pH may decrease the urinary elimination of memantine, resulting in increased plasma levels of memantine.

(5.5 , 7.1)

5.1Anesthesia Donepezil hydrochloride, an active ingredient in memantine and donepezil hydrochlorides extended-release capsules, as a cholinesterase inhibitor, is likely to exaggerate succinylcholine-type muscle relaxation during anesthesia.

5.2Cardiovascular Conditions Because of their pharmacological action, cholinesterase inhibitors may have vagotonic effects on the sinoatrial and atrioventricular nodes. This effect may manifest as bradycardia or heart block in patients both with and without known underlying cardiac conduction abnormalities. Syncopal episodes have been reported in association with the use of donepezil hydrochloride, an active ingredient in memantine and donepezil hydrochlorides extended-release capsules.

5.3Peptic Ulcer Disease and Gastrointestinal Bleeding Through their primary action, cholinesterase inhibitors may be expected to increase gastric acid secretion due to increased cholinergic activity. Clinical studies of donepezil hydrochloride in a dose of 5 mg/day to 10 mg/day have shown no increase, relative to placebo, in the incidence of either peptic ulcer disease or gastrointestinal bleeding. Patients treated with memantine and donepezil hydrochlorides extended-release should be monitored closely for symptoms of active or occult gastrointestinal bleeding, especially those at increased risk for developing ulcers, e.g., those with a history of ulcer disease or those receiving concurrent nonsteroidal anti-inflammatory drugs (NSAIDs).

5.4Nausea and Vomiting Donepezil hydrochloride, when initiated, as a predictable consequence of its pharmacological properties, has been shown to produce diarrhea, nausea, and vomiting. Although in most cases, these effects have been mild and transient, sometimes lasting one to three weeks, and have resolved during continued use of donepezil hydrochloride, patients should be observed closely at the initiation of treatment.

5.5Genitourinary Conditions Although not observed in clinical trials of donepezil hydrochloride, an active ingredient in memantine and donepezil hydrochlorides extended-release capsules, cholinomimetics may cause bladder outflow obstruction. Conditions that raise urine pH may decrease the urinary elimination of memantine, an active ingredient in memantine and donepezil hydrochlorides extended-release capsules, resulting in increased plasma levels of memantine [see Drug Interactions (7.1) ] .

5.6Seizures Cholinomimetics, including donepezil hydrochloride, an active ingredient in memantine and donepezil hydrochlorides extended-release capsules, are believed to have some potential to cause generalized convulsions. However, seizure activity also may be a manifestation of Alzheimer’s disease.

5.7Pulmonary Conditions Because of their cholinomimetic actions, cholinesterase inhibitors should be prescribed with care to patients with a history of asthma or obstructive pulmonary disease.

🤒 Adverse Reactions ~3 min read ▾

6 ADVERSE REACTIONS The following serious adverse reactions are discussed below and elsewhere in the labeling. Cardiovascular Conditions [see Warnings and Precautions (5.2) ] Peptic Ulcer Disease and Gastrointestinal Bleeding [see Warnings and Precautions (5.3) ] Nausea and Vomiting [see Warnings and Precautions (5.4) ] Genitourinary Conditions [see Warnings and Precautions (5.5) ] Seizures [see Warnings and Precautions (5.6) ] Pulmonary Conditions [see Warnings and Precautions (5.7) ] The most common adverse reactions, occurring at a frequency of at least 5% and greater than placebo with memantine hydrochloride extended-release 28 mg/day, were headache, diarrhea, and dizziness.

(6.1) The most common adverse reactions occurring at a frequency of at least 5% in patients receiving donepezil and at twice or more the placebo rate, include diarrhea, anorexia, vomiting, nausea, and ecchymosis. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Amneal Pharmaceuticals at 1-877-835-5472 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. Memantine Hydrochloride Memantine hydrochloride extended-release was evaluated in a double-blind, placebo-controlled trial in 676 patients with moderate to severe dementia of the Alzheimer’s type (341 patients treated with memantine 28 mg/day dose and 335 patients treated with placebo) for a treatment period up to 24 weeks.

Of the patients randomized, 236 treated with memantine 28 mg/day and 227 treated with placebo were on a stable dose of donepezil for 3 months prior to screening. Adverse Reactions Leading to Discontinuation with Memantine Hydrochloride In the placebo-controlled clinical trial of memantine hydrochloride extended-release, the proportion of patients in the memantine hydrochloride extended-release 28 mg/day dose group and in the placebo group who discontinued treatment due to adverse reactions was 10% and 6%, respectively.

The most common adverse reaction in the memantine hydrochloride extended-release treated group that led to treatment discontinuation was dizziness, at a rate of 1.5%. Most Common Adverse Reactions with Memantine Hydrochloride The most common adverse reactions with memantine hydrochloride extended-release in patients with moderate to severe Alzheimer’s disease, defined as those occurring at a frequency of at least 5% in the memantine hydrochloride extended-release group and at a higher frequency than placebo, were headache, diarrhea, and dizziness.

Table 1 lists adverse reactions that occurred at an incidence of ≥ 2% in the memantine hydrochloride extended-release treated group and occurred at a rate greater than placebo. Table 1: Adverse reactions with memantine hydrochloride extended-release in patients with moderate to severe Alzheimer’s disease Adverse Reaction Placebo (n = 335) % Memantine hydrochloride extended-release 28 mg (n = 341) % Gastrointestinal Disorders Diarrhea 4 5 Constipation 1 3 Abdominal pain 1 2 Vomiting 1 2 Infections and Infestations Influenza 3 4 Investigations Increased weight 1 3 Musculoskeletal and Connective Tissue Disorders Back pain 1 3 Nervous System Disorders Headache 5 6 Dizziness 1 5 Somnolence 1 3 Psychiatric Disorders Anxiety 3 4 Depression 1 3 Aggression 1 2 Renal and Urinary Disorders Urinary incontinence 1 2 Vascular Disorders Hypertension 2 4 Hypotension 1 2 Donepezil hydrochloride Adverse Reactions Leading to Discontinuation with Donepezil Hydrochloride In controlled clinical trials of donepezil hydrochloride, the rate of discontinuation due to adverse reactions for patients treated with donepezil hydrochloride was approximately 12%, compared to 7% for patients treated with placebo.

The most common adverse reactions leading to discontinua…

🔄 Drug Interactions ~1 min read ▾

7 DRUG INTERACTIONS Combined use with NMDA antagonists: use with caution. (7.2) Memantine and donepezil hydrochlorides extended-release may interfere with anticholinergic medications. (7.4) Concomitant administration of succinylcholine, similar neuromuscular blocking agents, or cholinergic agonists may lead to synergistic effect. (7.5)

7.1Use of Memantine with Drugs That Make the Urine Alkaline The clearance of memantine was reduced by about 80% under alkaline urine conditions at pH 8. Therefore, alterations of urine pH towards the alkaline condition may lead to an accumulation of the drug with a possible increase in adverse reactions. Urine pH is altered by diet, drugs (e.g., carbonic anhydrase inhibitors, sodium bicarbonate) and clinical state of the patient (e.g., renal tubular acidosis or severe infections of the urinary tract).

Hence, memantine should be used with caution under these conditions.

7.2Use of Memantine with Other N-methyl-D-aspartate (NMDA) Antagonists The combined use of memantine hydrochloride with other NMDA antagonists (amantadine, ketamine, and dextromethorphan) has not been systematically evaluated and such use should be approached with caution.

7.3Effect of Other Drugs on the Metabolism of Donepezil Inhibitors of CYP3A4 (e.g., ketoconazole) and CYP2D6 (e.g., quinidine), inhibit donepezil metabolism in vitro . Whether there is a clinical effect of quinidine is not known. Inducers of CYP3A4 (e.g., phenytoin, carbamazepine, dexamethasone, rifampin, and phenobarbital) could increase the rate of elimination of donepezil.

7.4Use of Donepezil with Anticholinergics Because of their mechanism of action, cholinesterase inhibitors, including donepezil hydrochloride, have the potential to interfere with the activity of anticholinergic medications.

7.5Use of Donepezil with Cholinomimetics and Other Cholinesterase Inhibitors A synergistic effect may be expected when cholinesterase inhibitors, including donepezil hydrochloride, are given concurrently with succinylcholine, similar neuromuscular blocking agents, or cholinergic agonists such as bethanechol.

👥 Use in Specific Populations ~3 min read ▾

8 USE IN SPECIFIC POPULATIONS

8.1Pregnancy Risk Summary There are no adequate data on the developmental risk associated with the use of memantine and donepezil hydrochlorides extended-release capsules or its active ingredients (memantine hydrochloride and donepezil hydrochloride) in pregnant women. Adverse developmental effects (mortality and decreased body weight and skeletal ossification) were observed in the offspring of rats administered memantine or donepezil during pregnancy at doses associated with minimal maternal toxicity. These doses are higher than those used in humans at the recommended daily dose of memantine and donepezil hydrochlorides extended-release [see Data] .

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. The background risk of major birth defects and miscarriage for the indicated population is unknown. Data Animal Data Memantine Hydrochloride Oral administration of memantine (2, 6, or 18 mg/kg/day) to rats during the period of organogenesis resulted in decreased skeletal ossification in fetuses at the highest dose tested.

The higher no-effect dose for adverse developmental effects (6 mg/kg) is 2 times the dose of memantine at the recommended human daily dose [RHD] of memantine and donepezil hydrochlorides extended-release (28 mg memantine/10 mg donepezil) on a body surface area (mg/m 2 ) basis. Oral administration of memantine to rabbits (3, 10, or 30 mg/kg/day) during the period of organogenesis resulted in no adverse developmental effects. The highest dose tested is approximately 20 times the dose of memantine at the RHD of memantine and donepezil hydrochlorides extended-release on a mg/m 2 basis.

In rats, memantine (2, 6, or 18 mg/kg/day) was administered orally prior to and throughout mating and, in females, through the period of organogenesis or continuing throughout lactation to weaning. Decreased skeletal ossification in fetuses and decreased body weight in pups were observed at the highest dose tested. The higher no-effect dose for adverse developmental effects (6 mg/kg/day) is 2 times the dose of memantine at the RHD of memantine and donepezil hydrochlorides extended-release on a mg/m 2 basis.

Oral administration of memantine (2, 6, or 18 mg/kg/day) to rats from late gestation throughout lactation to weaning, resulted in decreased pup weights at the highest dose tested. The higher no-effect dose (6 mg/kg/day) is approximately 2 times the dose of memantine at the RHD of memantine and donepezil hydrochlorides extended-release on a mg/m 2 basis. Donepezil Hydrochloride Oral administration of donepezil to rats and rabbits during the period of organogenesis resulted in no adverse developmental effects.

The highest doses (16 and 10 mg/kg/day, respectively) were approximately 15 and 7 times, respectively, the dose of donepezil at the RHD of memantine and donepezil hydrochlorides extended-release on a mg/m 2 basis. Oral administration of donepezil (1, 3, or 10 mg/kg/day) to rats during late gestation and throughout lactation to weaning resulted in an increase in stillbirths and offspring mortality at the highest dose tested. The higher no-effect dose (3 mg/kg/day) is approximately 3 times the dose of donepezil at the RHD of memantine and donepezil hydrochlorides extended-release on a mg/m 2 basis.

8.2Lactation Risk Summary There are no data on the presence of memantine or donepezil in human milk, the effects on the breastfed infant, or the effects of memantine and donepezil hydrochlorides extended-release capsules or its metabolites on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for memantine and donepezil hydrochlorides extended-release capsules and any potential adverse effects on the breastfed infant from memantine and donepezil hydrochlorides extended-release capsules or from the un…

🤰 Pregnancy ~2 min read ▾

🧒 Pediatric Use ~3 min read ▾

8.4Pediatric Use Safety and effectiveness of memantine and donepezil hydrochlorides extended-release in pediatric patients have not been established. Memantine failed to demonstrate efficacy in two 12-week controlled clinical studies of 578 pediatric patients aged 6 to 12 years with autism spectrum disorders (ASD), including autism, Asperger’s disorder and Pervasive Development Disorder - Not Otherwise Specified (PDD-NOS). Memantine has not been studied in pediatric patients under 6 years of age or over 12 years of age.

Memantine treatment was initiated at 3 mg/day and the dose was escalated to the target dose (weight-based) by week 6. Oral doses of memantine 3, 6, 9, or 15 mg extended-release capsules were administered once daily to patients with weights < 20 kg, 20 to 39 kg, 40 to 59 kg and ≥ 60 kg, respectively. In a randomized, 12-week double-blind, placebo-controlled parallel study (Study A) in patients with autism, there was no statistically significant difference in the Social Responsiveness Scale (SRS) total raw score between patients randomized to memantine (n=54) and those randomized to placebo (n=53).

In a 12-week responder-enriched randomized withdrawal study (Study B) in 471 patients with ASD, there was no statistically significant difference in the loss of therapeutic response rates between patients randomized to remain on full-dose memantine (n=153) and those randomized to switch to placebo (n=158). The overall risk profile of memantine in pediatric patients was generally consistent with the known risk profile in adults [see Adverse Reactions (6.1) ] . In Study A, the adverse reactions in the memantine group (n=56) that were reported in at least 5% of patients and at least twice the frequency of the placebo group (N=58) are listed in Table 3: Table 3: Study A Commonly Reported Adverse Reactions With a Frequency ≥ 5% and Twice That of Placebo Adverse Reaction Memantine N=56 Placebo N=58 Cough 8.9% 3.4% Influenza 7.1% 3.4% Rhinorrhea 5.4% 0% Agitation 5.4% 1.7% Discontinuations due to adverse reactions a Aggression 3.6% 1.7% Irritability 1.8% 3.4% a Reported adverse reactions leading to discontinuation in more than one patient in either treatment group.

The adverse reactions that were reported in at least 5% of patients in the 12 to 48 week open-label study to identify responders to enroll in Study B are listed in Table 4: Table 4: 12 to 48 Week Open Label Lead-In study to Study B Commonly Reported Adverse Reactions with a Frequency ≥ 5% Adverse Reaction Memantine N=903 Headache 8% Nasopharyngitis 6.3% Pyrexia 5.8% Irritability 5.4% Discontinuations due to adverse reactions a Irritability 1.2% Aggression 1% a At least 1% incidence of adverse reactions leading to premature discontinuation.

In the randomized withdrawal study (Study B), the adverse reaction in patients randomized to placebo (n=160) and reported in at least 5% of patients and at twice the frequency of the full-dose memantine treatment group (n=157) was irritability (5% vs 2.5%). In a juvenile animal study, male and female juvenile rats were administered memantine (15, 30, and 45 mg/kg/day) starting on postnatal day (PND) 14 through PND 70. Body weights were reduced at 45 mg/kg/day.

Delays in sexual maturation were noted in male and female rats at doses ≥ 30 mg/kg/day. Memantine induced neuronal lesions in several areas of the brain on PND 15 and 17 at doses ≥ 30 mg/kg/day. Behavioral toxicity (decrease percent of auditory startle habituation) was noted for animals in the 45 mg/kg/day dose group.

The 15 mg/kg/day dose was considered the No-Observed-Adverse-Effect-Level (NOAEL) for this study. In a second juvenile rat toxicity study, male and female juvenile rats were administered memantine (1, 3, 8, 15, 30, and 45 mg/kg/day) starting on postnatal day (PND) 7 through PND 70. Due to early memantine-related mortality, the 30 and 45 mg/kg/day dose groups were terminated without further evaluation.

Memantine induced apoptosis or neuronal degeneration in se…

🧓 Geriatric Use 177 words ▾

8.5Geriatric Use Memantine Hydrochloride The majority of people with Alzheimer’s disease are 65 years and older. In the clinical study of memantine hydrochloride extended-release, the mean age of patients was approximately 77 years; over 91% of patients were 65 years of age and older, 67% were 75 years of age and older, and 14% were 85 years of age and older. The efficacy and safety data presented in the clinical trials section were obtained from these patients.

There were no clinically meaningful differences in most adverse events reported by patients ≥ 65 years old and < 65 years old. Donepezil Hydrochloride The mean age of patients enrolled in the clinical studies with donepezil was 73 years; 80% of these patients were between 65 and 84 years of age, and 49% of patients 75 years of age and older. The efficacy and safety data presented in the clinical trials section were obtained from these patients.

There were no clinically significant differences in most adverse events reported by patients ≥ 65 years old and < 65 years old.

🆘 Overdosage ~2 min read ▾

10 OVERDOSAGE Memantine hydrochloride and donepezil hydrochloride are the two active ingredients of memantine and donepezil hydrochlorides extended-release. No specific antidote for memantine hydrochloride overdose is known; however, elimination of memantine can be increased by acidification of the urine. Tertiary anticholinergics such as atropine may be used as an antidote for donepezil hydrochloride overdose.

In managing cases of overdose, consider the possibility of multiple drug involvement. In case of overdose, call Poison Control Center at 1-800-222-1222 for the latest recommendation. In general, supportive measures should be utilized, and treatment should be symptomatic.

Memantine Hydrochloride Signs and symptoms most often accompanying overdosage with other formulations of memantine in clinical trials and from worldwide marketing experience, alone or in combination with other drugs and/or alcohol, include agitation, asthenia, bradycardia, confusion, coma, dizziness, ECG changes, increased blood pressure, lethargy, loss of consciousness, psychosis, restlessness, slowed movement, somnolence, stupor, unsteady gait, visual hallucinations, vertigo, vomiting, and weakness. The largest known ingestion of memantine worldwide was 2 grams in an individual who took memantine in conjunction with unspecified antidiabetic medications.

This person experienced coma, diplopia, and agitation, but subsequently recovered. One patient participating in a memantine hydrochloride extended-release clinical trial unintentionally took 112 mg of memantine hydrochloride extended-release daily for 31 days and experienced an elevated serum uric acid, elevated serum alkaline phosphatase, and low platelet count. No fatalities have been noted with overdoses of memantine alone.

A fatal outcome has very rarely been reported when memantine has been ingested as part of overdosing with multiple drugs; in those instances, the relationship between memantine and a fatal outcome has been unclear. Donepezil Hydrochloride Overdosage with cholinesterase inhibitors can result in cholinergic crisis characterized by severe nausea, vomiting, salivation, sweating, bradycardia, hypotension, respiratory depression, collapse, and convulsions. Increasing muscle weakness is a possibility and may result in death if respiratory muscles are involved.

Tertiary anticholinergics such as atropine may be used as an antidote for donepezil hydrochloride overdosage. Intravenous atropine sulfate titrated to effect is recommended: an initial dose of 1 to 2 mg IV with subsequent doses based upon clinical response. Atypical responses in blood pressure and heart rate have been reported with other cholinomimetics when co-administered with quaternary anticholinergics such as glycopyrrolate.

It is not known whether donepezil hydrochloride and/or its metabolites can be removed by dialysis (hemodialysis, peritoneal dialysis, or hemofiltration). Dose-related signs of toxicity in animals included reduced spontaneous movement, prone position, staggering gait, lacrimation, clonic convulsions, depressed respiration, salivation, miosis, tremors, fasciculation, and lower body surface temperature.

🧬 Clinical Pharmacology ~2 min read ▾

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Memantine and donepezil hydrochlorides extended-release capsules contain two approved medications: memantine hydrochloride extended-release and donepezil hydrochloride. Each of those medications is postulated to have a different mechanism in Alzheimer’s disease. Memantine Persistent activation of central nervous system NMDA receptors by the excitatory amino acid glutamate has been hypothesized to contribute to the symptomatology of Alzheimer’s disease.

Memantine is postulated to exert its therapeutic effect through its action as a low to moderate affinity uncompetitive (open channel) NMDA receptor antagonist which binds preferentially to the NMDA receptor-operated cation channels. There is no evidence that memantine prevents or slows neurodegeneration in patients with Alzheimer’s disease. Donepezil Current theories on the pathogenesis of the cognitive signs and symptoms of Alzheimer’s disease attribute some of them to a deficiency of cholinergic neurotransmission.

Donepezil is postulated to exert its therapeutic effect by enhancing cholinergic function. This is accomplished by increasing the concentration of acetylcholine in the central nervous system through reversible inhibition of its hydrolysis by acetylcholinesterase. There is no evidence that donepezil prevents or slows neurodegeneration in patients with Alzheimer’s disease.

12.3Pharmacokinetics Memantine and donepezil hydrochlorides extended-release Memantine and donepezil hydrochlorides extended-release was bioequivalent to co-administration of individual memantine hydrochloride extended-release and donepezil hydrochloride. Exposure (AUC and C max ) of memantine and donepezil following memantine and donepezil hydrochlorides extended-release administration in the fed or fasted state was similar. Further, exposure of memantine and donepezil following memantine and donepezil hydrochlorides extended-release administration as intact capsule or capsule contents sprinkled on applesauce was similar in healthy subjects.

Memantine Hydrochloride Memantine is well absorbed after oral administration and has linear pharmacokinetics over the therapeutic dose range. It is excreted predominantly unchanged in urine and has a terminal elimination half-life of about 60 to 80 hours. In a study comparing 28 mg once-daily memantine hydrochloride extended-release to 10 mg twice-daily memantine hydrochloride, C max and AUC 0-24 values were 48% and 33% higher for the memantine hydrochloride extended-release dosage regimen, respectively.

Absorption After multiple dose administration of memantine hydrochloride extended-release, memantine peak concentrations occur around 9 to 12 hours postdose. There is no difference in the absorption of memantine hydrochloride extended-release when the capsule is taken intact or when the contents are sprinkled on applesauce. After single-dose administration, there is no difference in memantine exposure, based on C max or AUC, for memantine hydrochloride extended-release when the drug product is administered with food or on an empty stomach.

However, peak plasma concentrations are achieved about 18 hours after administration with food versus approximately 25 hours after administration on an empty stomach. Distribution The mean volume of distribution of memantine is 9 to 11 L/kg and the plasma protein binding is low (45%). Metabolism Memantine undergoes partial hepatic metabolism.

The hepatic microsomal CYP450 enzyme system does not play a significant role in the metabolism of memantine. Elimination Memantine is excreted predominantly in the urine, unchanged, and has a terminal elimination half-life of about 60 to 80 hours. About 48% of administered drug is excreted unchanged in urine; the remainder is converted primarily to three polar metabolites which possess minimal NMDA receptor antagonistic activity: the N-glucuronide conjugate, 6-hydroxy memantine, and 1-nitroso-deaminated memantine.

A total of 74% of the ad…

🧬 Mechanism of Action 181 words ▾

📦 How Supplied / Storage and Handling ~1 min read ▾

16 HOW SUPPLIED/STORAGE AND HANDLING

16.1How Supplied Memantine and donepezil hydrochlorides extended-release capsules, 7 mg/10 mg , are supplied as two-piece hard gelatin capsules with green opaque cap and white opaque body filled with white to off-white pellets. Imprinted in black ink AN on the cap and imprinted in black ink 1552 on the body. They are available as follows: Bottles of 30: NDC 69238-1552-3 Bottles of 90: NDC 69238-1552-9 Memantine and donepezil hydrochlorides extended-release capsules, 14 mg/10 mg , are supplied as two-piece hard gelatin capsules with green opaque cap and green opaque body filled with white to off-white pellets.

Imprinted in white ink AN on the cap and imprinted in white ink 1248 on the body. They are available as follows: Bottle of 30: NDC 69238-1248-3 Bottle of 90: NDC 69238-1248-9 Memantine and donepezil hydrochlorides extended-release capsules, 21 mg/10 mg , are supplied as two-piece hard gelatin capsules with yellow opaque cap and white opaque body filled with white to off-white pellets. Imprinted in black ink AN on the cap and imprinted in black ink 1553 on the body.

They are available as follows: Bottles of 30: NDC 69238-1553-3 Bottles of 90: NDC 69238-1553-9 Memantine and donepezil hydrochlorides extended-release capsules, 28 mg/10 mg , are supplied as two-piece hard gelatin capsules with yellow opaque cap and yellow opaque body filled with white to off-white pellets. Imprinted in black ink AN on the cap and imprinted in black ink 1247 on the body. They are available as follows: Bottle of 30: NDC 69238-1247-3 Bottle of 90: NDC 69238-1247-9

16.2Storage and Handling Store at 20º to 25°C (68º to 77°F); excursions permitted between 15° to 30ºC (59°F to 86°F) [see USP Controlled Room Temperature]. Dispense in a tight, light-resistant container, as defined in the USP.

📋 Description ~2 min read ▾

11 DESCRIPTION Memantine and donepezil hydrochlorides extended-release capsules contain memantine, an orally active NMDA receptor antagonist, as the hydrochloride salt and donepezil, a reversible inhibitor of the enzyme acetylcholinesterase, as the hydrochloride salt. Memantine Hydrochloride, USP The chemical name for memantine hydrochloride, USP is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: The molecular formula is C 12 H 21 N• HCl and the molecular weight is 215.76. Memantine hydrochloride, USP occurs as a fine white to off-white powder.

Donepezil Hydrochloride, USP The chemical name for donepezil hydrochloride, USP is (±)-2-[(1-benzyl- 4-piperidyl) methyl]-5,6-dimethoxy-1-indanone hydrochloride The molecular formula is C 24 H 29 NO 3 •HCl and the molecular weight is 415.95. Donepezil hydrochloride, USP is off white to cream coloured powder. Memantine and donepezil hydrochlorides extended-release capsules contain 7 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (7 mg/10 mg), 14 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (14 mg/10 mg), 21 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (21 mg/10 mg) or 28 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (28 mg/10 mg).

Memantine and donepezil hydrochlorides extended-release capsules (7 mg/10 mg) contain the following inactive ingredients: colloidal silicon dioxide, ethyl cellulose, hydroxypropyl cellulose, hypromellose, sugar spheres (corn starch, sucrose), talc and triethyl citrate. The hard gelatin capsules contain D&C yellow no. 10, FD&C blue no.

1, gelatin, sodium lauryl sulfate and titanium dioxide. The black monogramming ink contains black iron oxide, butyl alcohol, dehydrated alcohol, isopropyl alcohol, potassium hydroxide, propylene glycol, shellac, strong ammonia solution and purified water. Memantine and donepezil hydrochlorides extended-release capsules ( 14 mg/10 mg) contain the following inactive ingredients: colloidal silicon dioxide, ethyl cellulose, hydroxypropyl cellulose, hypromellose, sugar spheres (corn starch, sucrose), talc and triethyl citrate.

The hard gelatin capsules contain D&C yellow no.10, FD&C blue no. 1, gelatin, sodium lauryl sulfate and titanium dioxide. The white monogramming ink contains butyl alcohol, dehydrated alcohol, isopropyl alcohol, sodium hydroxide, propylene glycol, povidone, shellac and titanium dioxide.

Memantine and donepezil hydrochlorides extended-release capsules (21 mg/10 mg) contain the following inactive ingredients: colloidal silicon dioxide, ethyl cellulose, hydroxypropyl cellulose, hypromellose, sugar spheres (corn starch, sucrose), talc and triethyl citrate. The hard gelatin capsules contain D&C yellow no. 10, FD&C red no.

40, gelatin, sodium lauryl sulfate and titanium dioxide. The black monogramming ink contains black iron oxide, butyl alcohol, dehydrated alcohol, isopropyl alcohol, potassium hydroxide, propylene glycol, shellac, strong ammonia solution and purified water. Memantine and donepezil hydrochlorides extended-release capsules (28 mg/10 mg ) contain the following inactive ingredients: colloidal silicon dioxide, ethyl cellulose, hydroxypropyl cellulose, hypromellose, sugar spheres (corn starch, sucrose), talc and triethyl citrate.

The hard gelatin capsules contain D&C yellow no.10, FD&C red no. 40, gelatin, sodium lauryl sulfate and titanium dioxide. The black monogramming ink contains black iron oxide, butyl alcohol, dehydrated alcohol, isopropyl alcohol, potassium hydroxide, propylene glycol, purified water, shellac and strong ammonia solution. chem structure 1 chem structure 2

💬 Information for Patients 195 words ▾

17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling ( Patient Information ). Dosing Information Instruct patients and caregivers to take memantine and donepezil hydrochlorides extended-release only once daily in the evening, as prescribed [see Dosage and Administration (2.1) ] . If a patient misses a single dose of memantine and donepezil hydrochlorides extended-release, that patient should not double up on the next dose.

The next dose should be taken as scheduled [see Dosage and Administration (2.1) ] . Instruct patients and caregivers that memantine and donepezil hydrochlorides extended-release capsules should be swallowed whole. Alternatively, memantine and donepezil hydrochlorides extended-release capsules may be opened and sprinkled on applesauce and the entire contents should be consumed.

The capsules should not be divided, chewed, or crushed. Warn patients and caregivers not to use any capsules of memantine and donepezil hydrochlorides extended-release that are damaged or show signs of tampering [see Dosage and Administration (2.2) ] . Common Adverse Reactions Advise patients and caregivers that memantine and donepezil hydrochlorides extended-release may cause headache, diarrhea, dizziness, anorexia, vomiting, nausea, and ecchymosis [see Adverse Reactions (6.1)] .

Distributed by: Amneal Pharmaceuticals Bridgewater, NJ 08807 Rev. 12-2024-01

Glossary — plain-language definitions of medical terms used in this label:

contraindicated: Should not be used in that situation, because the risk is considered too high.

in vitro: In a laboratory dish or test tube rather than in a living person or animal; results may not carry over to people.

synergistic: When two things taken together produce a larger effect than adding their separate effects would predict.

abdominal pain: Pain, cramping, or discomfort felt anywhere in the belly area.

Absorption: How a medicine moves from where it is taken, such as the stomach or gut, into the bloodstream.

accumulation: A buildup of a medicine in the body when new doses are taken before earlier ones are fully removed.

Active ingredient: The part of a medicine that produces its intended effect on the body.

adverse reaction: An unwanted or harmful effect that a medicine causes in the body.

Adverse Reactions: Unwanted or harmful effects that people experienced while taking a medicine, listed on its official label.

aggression: Hostile or violent feelings or behavior directed toward other people.

agitation: A state of feeling restless and upset and being unable to relax, sometimes with pacing or fidgeting.

alkaline phosphatase: An enzyme measured in a blood test; higher levels can point to problems with the liver, bile ducts, or bones.

anorexia: Loss of appetite, or not feeling hungry (on a drug label this means reduced appetite, not the eating disorder).

antagonist: A substance that blocks a target in the body so a natural signal or another medicine cannot produce its usual effect.

antidote: A treatment that reverses or counteracts the effects of a specific medicine or poison.

anxiety: A feeling of worry, nervousness, or unease, sometimes along with a racing heart or restlessness.

asthenia: Unusual weakness or lack of physical strength and energy.

AUC: A measure of total drug exposure over time, showing how much medicine the blood is exposed to overall.

bradycardia: A slower-than-normal heart rate, usually under 60 beats per minute.

clearance: How quickly the body removes a medicine from the blood, usually through the liver and kidneys.

Clinical Pharmacology: The label section explaining how a medicine works in the body and how the body processes it.

Clinical Studies: The label section summarizing the research trials used to show that a medicine works and is acceptably safe.

constipation: Having bowel movements less often than usual, or passing stools that are hard, dry, and difficult to move.

Contraindications: A list of situations or health conditions in which a medicine should not be used because the chance of harm is too high.

creatinine clearance: An estimate of how fast the kidneys filter waste from the blood, often used to choose the right medicine dose.

CYP2D6: A liver enzyme that breaks down many medicines; people inherit different versions, so it works faster in some and slower in others.

CYP3A4: One of the most important liver and gut enzymes, responsible for breaking down a large share of all medicines.

depression: A lasting low mood with loss of interest that affects everyday life.

diarrhea: Loose, watery bowel movements that happen more often than normal.

diplopia: Double vision, or seeing two images of a single object.

Distribution: How a medicine spreads from the blood into the body's tissues and organs after it is absorbed.

Dosage and Administration: The label section explaining how much of a medicine to use and how to take or give it.

double-blind: A study in which neither the patients nor their doctors know who is getting the real medicine and who is getting the dummy.

Drug Interactions: The label section listing other medicines, foods, or substances that can change how a medicine works or raise the chance of side effects.

ecchymosis: A bruise; a flat blue or purple mark on the skin where blood has leaked underneath.

efficacy: How well a treatment works under the controlled conditions of a clinical study.

Elimination: The overall removal of a medicine from the body by breaking it down and passing it out.

estimated background risk: The normal chance that any pregnancy will have a birth defect or problem, even without taking any medicine.

extended-release: A pill or capsule made to release its medicine slowly over many hours, so it can be taken less often; often labeled ER or XR.

gastrointestinal bleeding: Bleeding anywhere along the digestive tract, from the food pipe down to the bowel.

Half-life: The time it takes for the amount of medicine in the blood to drop by half.

hemodialysis: A treatment that uses a machine to filter waste and extra fluid from the blood when the kidneys cannot.

hepatic metabolism: The breakdown of a medicine by the liver into other substances the body can use or remove.

How Supplied/Storage and Handling: The label section describing the forms and strengths a medicine comes in and how to store it properly.

hypersensitivity: An overreaction of the body's defense system to a substance, causing symptoms such as rash, swelling, or trouble breathing.

hypertension: Blood pressure that stays higher than normal, commonly called high blood pressure.

hypotension: Blood pressure that is lower than normal, which can cause dizziness or fainting.

incidence: How often a new event, such as a side effect, happens in a group of people over a set period of time.

Indications and Usage: The label section stating which medical conditions the FDA has officially approved the medicine to treat, prevent, or manage.

inhibitor: A substance that blocks an enzyme or transporter, which can raise the levels of drugs it normally handles.

intravenous: Given directly into a vein through a needle or thin tube; often written as IV.

irritability: Getting annoyed, frustrated, or angry more easily than usual.

lactation: The making and release of milk from a mother's breasts after giving birth.

lethargy: A state of tiredness and sluggishness, often with slowed thinking or movement.

linear pharmacokinetics: When blood levels of a medicine rise in direct proportion to the size of the dose.

maintenance dose: The regular ongoing dose taken to keep a steady, effective amount of medicine in the body over time.

Mechanism of Action: How a medicine produces its effect in the body, described at the level of cells or body chemistry.

Metabolism: How the body chemically changes a medicine, usually in the liver, into other substances.

nasopharyngitis: Inflammation of the nose and throat, commonly known as the common cold.

NDC: A unique number that identifies a specific medicine, its maker, strength, and package size.

open-label: A study in which both the patients and their doctors know which treatment each person is receiving.

organogenesis: The early stage of pregnancy when the developing baby's organs are first forming.

Overdosage: The label section describing what can happen if too much of a medicine is taken and how it may be treated.

Patient Counseling Information: The label section telling health professionals what to explain to patients about using a medicine safely.

Pharmacokinetics: The study of how the body takes in a medicine, spreads it around, breaks it down, and removes it over time.

placebo: An inactive treatment with no real medicine in it, such as a sugar pill, used for comparison in a study.

placebo-controlled: Describes a study that compares people taking the real medicine against people taking a dummy pill with no active ingredient.

protein binding: How much of a medicine sticks to proteins in the blood instead of moving freely through the body.

psychosis: A state of losing touch with reality, such as seeing or hearing things that are not there or holding false beliefs.

pyrexia: A raised body temperature; a fever.

randomized: Assigned to a treatment group purely by chance, like a coin flip, so the groups being compared start out fair and similar.

receptor: A special docking spot on a cell that a medicine or natural body chemical attaches to in order to trigger an effect.

renal impairment: Reduced kidney function, meaning the kidneys do not filter waste and fluid from the blood as well as normal.

respiratory depression: Breathing that becomes too slow or too shallow to move enough air, so the body may not get enough oxygen.

restlessness: An inability to stay calm or still, with a constant feeling of needing to move.

reversible inhibitor: A substance that blocks an enzyme or receptor temporarily, with the effect fading as it leaves the body.

seizure: A sudden burst of abnormal electrical activity in the brain that can cause shaking, staring, confusion, or loss of awareness.

somnolence: Feeling very sleepy or drowsy, with trouble staying awake during the day.

statistically significant: A result unlikely to be due to chance alone, suggesting a real difference between the groups being compared.

synergistic effect: When two medicines taken together produce a combined effect that is greater than simply adding their separate effects.

Use in Specific Populations: The label section describing how a medicine affects particular groups, such as pregnant people, children, or older adults.

vertigo: A spinning sensation that makes you feel like you or the room around you is moving.

volume of distribution: A calculated value showing how widely a medicine spreads into body tissues versus staying in the blood.

Warnings and Precautions: The label section describing serious risks to know about and safety steps to follow while using a medicine.

withdrawal: Uncomfortable physical or mental symptoms that appear when a medicine the body has gotten used to is reduced or stopped.

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

← 69238-1552-03 · Amneal 69238-1563-01 · Amneal →

For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.

Memantine and Donepezil Hydrochlorides Extended-release 21 mg; 10 mg Capsule, Extended Release, 90-count

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8 USE IN SPECIFIC POPULATIONS

12 CLINICAL PHARMACOLOGY

16 HOW SUPPLIED/STORAGE AND HANDLING

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