Galantamine ER (Essential Pharma Switzerland): Uses, Side Effects and Dosage

What Galantamine ER is used for:

• Galantamine ER is used to treat the symptoms of mild to moderate Alzheimer’s disease (a type of dementia).

How Galantamine ER works:

Galantamine ER is a type of drug called a “cholinesterase inhibitor.” Low amounts of acetylcholine in the brain might be the cause of Alzheimer’s disease. Galantamine ER helps increase the amount of acetylcholine in the brain which improves memory.

The ingredients in Galantamine ER are:

Medicinal ingredients: galantamine hydrobromide

Non-medicinal ingredients: diethyl phthalate, ethylcellulose, gelatin, hypromellose, polyethylene glycol, sugar spheres (contains: sucrose and starch) and titanium dioxide. The 16 mg capsule also contains red ferric oxide. The 24 mg capsule also contains red ferric oxide and yellow ferric oxide.

Galantamine ER comes in the following dosage forms:

Extended release capsules: 8 mg, 16 mg, 24 mg galantamine as galantamine hydrobromide

Do not use Galantamine ER if:

• you are allergic to:

  • galantamine hydrobromide
  • any of the other ingredients in Galantamine ER
  • a similar type of medicine to galantamine hydrobromide
• you are under 18 years of age
• you have a history of heart problems including heart rhythm problems

To help avoid side effects and ensure proper use, talk to your healthcare professional before you take Galantamine ER. Talk about any health conditions or problems you may have, including if you:

• have a condition that affects your heart and/or blood vessels such as coronary artery disease and congestive heart failure
• have an ulcer or history of ulcers in the stomach or gut
• have a blockage of the stomach or in the gut
• have seizures [or fits] (such as epilepsy)
• have problems controlling movements of the body or limbs (extrapyramidal disorder)
• have a respiratory disease that affects breathing (such as asthma or obstructive pulmonary disease)
• have problems passing urine
• have an increased risk of developing ulcers (for example, you are taking non-steroidal anti-inflammatory drugs (NSAIDs) or high doses of acetylsalicylic acid [ASA (ASPIRIN)]
• have liver or kidney problems

• are pregnant or planning to become pregnant

• are breast-feeding or planning to breast-feed
• are planning to have or have had an operation with general anesthesia (medication that puts you to sleep)

• have an increased risk of developing serious and possibly life-threatening heart rhythm problems. Risk factors include if you:

  • have heart failure
  • recently had a heart attack
  • have a slower than usual heartbeat
  • have been told by a healthcare professional that you have low potassium or magnesium levels in your blood
  • have or have a family history of heart rhythm problems
  • take medicines that are known to cause heart rhythm problems

• you have any of the following hereditary diseases that mean you should not eat sugar. Galantamine ER contains a type of sugar called sucrose.

  • Fructose intolerance (trouble absorbing fructose)
  • Glucose-galactose malabsorption (trouble absorbing glucose or galactose)
  • Sucrase-isomaltase insufficiency (trouble digesting sucrose or isomaltase)

Other warnings you should know about:

Talk to your doctor right away if you

• have any skin rashes or inflammation,
• blisters or
• swelling of the skin.

Also tell your doctor if you recently had an operation on the stomach, gut or bladder.

Galantamine ER can cause weight loss. Your doctor will check your weight regularly while you are taking Galantamine ER.

Driving and using machines: Your doctor will tell you whether your illness allows you to drive vehicles and use machines safely. Galantamine ER may make you feel dizzy or sleepy, especially during the first few weeks of treatment. If Galantamine ER affects you, do not drive or use any tools or machinery.

Tell your healthcare professional about all the medicines you take, including any drugs, vitamins, minerals, natural supplements or alternative medicines.

Galantamine ER should not be used with medicines that work in a similar way.

The following may interact with Galantamine ER:

• anticholinergics (such as drugs for diarrhea, Parkinson’s disease, or airway spasms)
• medicines taken for heart conditions or high blood pressure (such as digoxin or beta-blockers)
• Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) or high doses of acetylsalicylic acid [ASA (ASPIRIN)], which can increase the risk of ulcers
• antidepressants (such as amitriptyline, fluoxetine, fluvoxamine, or paroxetine)
• ketoconazole (an antifungal)
• erythromycin (an antibiotic)

• medicines that are known to lengthen a part of the heartbeat called “QT interval”. These can include:

  • medicines used to treat heart rhythm disorders, such as quinidine, amiodarone, sotalol
  • medicines used to treat depression like citalopram, escitalopram, amitriptyline
  • medicines used to treat mental disorders like phenothiazine derivatives, sertindole, pimozide, ziprasidone
  • medicines used to treat stomach problems like cisapride
  • medicines used to treat allergies like mizolastin
  • medicines used to treat bacterial infections such as clarithromycin, erythromycin, levofloxacin, moxifloxacin
  • medicines used to treat malaria such as halofrantrine

Galantamine ER may affect some anesthetics. If you are going to have an operation under a general anesthetic, tell the doctor that you are taking Galantamine ER, well in advance.

How to take Galantamine ER:

• Take exactly as your healthcare professional has told you.
• Check with your healthcare professional if you are not sure.
• Swallow capsules whole with fluids.
• Take Galatamine-ER for as long as your healthcare professional prescribes it. Do not stop taking this medicine unless your healthcare professional tells you to.

Usual dose:

Take your dose of Galantamine ER once a day in the morning, with water or other liquids. Try to take Galantamine ER with food.

• The usual starting dose is 8 mg, taken once a day.
• Your doctor may gradually increase your dose, every 4 weeks or more, until you reach a dose that is good for you.
• The maximum dose is 24 mg, taken once a day.

DO NOT take more than one capsule in a day unless instructed to by your doctor.

If you have liver or kidney problems, your doctor may give you a lower dose of Galantamine ER, or may decide this medicine is not good for you.

While you are taking Galantamine ER

Drink plenty of liquids, to keep yourself hydrated.

Your doctor will need to see you regularly, to check that this medicine is working and to see how you are feeling.

REMEMBER: This medicine is for you. Only a doctor can prescribe it for you. Never give it to someone else. It may harm them even if their symptoms appear to be similar to yours.

Overdose:

The signs of overdose may include:

• severe nausea and vomiting, abdominal cramps, sweating
• weak muscles, difficulty breathing
• seizures (fits)
• low blood pressure, abnormal heart rhythm that may cause loss of consciousness

Missed dose:

If you forget to take a dose, do not worry, wait and take the next dose at the usual time. Do NOT take two doses at once.

If you miss your dose for a few days or longer, do NOT restart without contacting your doctor.

Possible side effects from using Galantamine ER:

These are not all the possible side effects you may have when taking Galantamine ER. If you experience any side effects not listed here, tell your healthcare professional.

• abdominal pain, diarrhea, indigestion, decreased appetite
• difficulty swallowing
• weight loss
• flushing
• dehydration (sometimes severe)
• weakness
• fever
• malaise
• leg cramps
• muscle spasms
• tingling in the hands or feet
• ringing in the ears
• headache
• dizziness
• blurred vision
• tiredness, sleepiness or sleeplessness
• depression
• runny nose
• sweating
• urinary tract infection, incontinence
• falling, sometimes resulting in injury
• trembling

If side effects occur, they are mainly experienced early in the treatment or when the dose is increased. Most tend to disappear gradually as the body adapts to the treatment; for example, nausea (feeling sick) and vomiting (being sick) generally pass after a few days. However, you should tell your doctor about any side effects, especially if they persist.

Serious side effects and what to do about them

If you are caring for a patient with Alzheimer's disease who has new symptoms you should discuss them with his or her doctor.

If you have a troublesome symptom or side effect that is not listed here or becomes bad enough to interfere with your daily activities, tell your healthcare professional.

Reporting side effects

Storage:

Store Galantamine ER in a cool dry place between 15 to 30°C.

Keep out of reach and sight of children.

Medicines can be kept for a limited period only. Therefore, do not use Galantamine ER after the date (month and year) printed after “EXP”, even if it has been stored properly. Always return old medicines to your pharmacist.

If you want more information about Galantamine ER:

• Talk to your healthcare professional
• Find the full product monograph that is prepared for healthcare professionals and includes this Patient Medication Information by visiting the Health Canada Drug Product Database website (https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/drug-product-database.html) the manufacturer’s website: www.essentialpharmagroup.com, or by calling 1-844-222-4546. .

Date of Authorization: 2026-08-11

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