Galantamine

When should one not use Galantamine

• If you are allergic to galantamine or any of the ingredients of this medicine.
• If you have severe liver problems (Child-Pugh score greater than 9).
• If you have very severe kidney problems (creatinine clearance less than 9 ml/min).
• If you have both serious liver and kidney problems at the same time.

Common side effects of this drug are:

• Vomiting
• Nausea
• Decreased appetite
• Abdominal pain
• Fatigue

Other General Warnings

• You have Alzheimer's disease, as treatment with Galantamine should be supervised and a caregiver should help monitor medicine intake.
• You notice any skin rash, blisters, or severe skin reactions, because Galantamine can cause serious skin problems.
• You experience unexplained weight loss, as Galantamine and Alzheimer's disease can reduce weight and need regular monitoring.
• You have heart problems such as slow heart rate, heart block, sick sinus syndrome, recent heart attack, new atrial fibrillation, unstable angina, heart failure, or take medicines affecting heart rate, as Galantamine may worsen these conditions.
• You have a prolonged QT interval, electrolyte problems, or take other drugs affecting the QT interval, as galantamine may increase the risk of serious heart rhythm issues.
• You have a history of ulcers, gastrointestinal obstruction, or recent gut surgery, as Galantamine may worsen these conditions.
• You have a history of seizures, movement disorders, or cerebrovascular disease, as Galantamine may trigger seizures or worsen neurological symptoms.
• You have severe asthma, COPD, or active lung infections, as Galantamine may affect breathing.
• You have urinary retention, blockage, or are recovering from bladder surgery, as Galantamine may worsen urinary problems.
• You are scheduled for surgery or anaesthesia, especially with muscle relaxants, as Galantamine may exaggerate muscle relaxation.

How Does It Work?

Interactions with other medicines

• Avoid taking galantamine with other cholinergic medicines (like donepezil, rivastigmine, neostigmine, pyridostigmine, ambenonium, or pilocarpine) as effects may overlap.
• Galantamine may reduce the effect of anticholinergic medicines (like atropine); stopping these suddenly can increase galantamine's effects.
• Use caution with medications that slow the heart rate (e.g., digoxin, beta-blockers, some calcium channel blockers, amiodarone), as galantamine may increase their effects.
• Medicines that can cause heart rhythm problems (torsades de pointes) may need ECG monitoring when used with galantamine.
• Galantamine may enhance muscle relaxation during anaesthesia, particularly with succinylcholine, in the presence of certain enzyme deficiencies.
• Taking galantamine with food slows absorption but reduces side effects; it does not affect overall effectiveness.
• Strong CYP2D6 inhibitors (e.g., paroxetine, fluoxetine, quinidine) or CYP3A4 inhibitors (e.g., ketoconazole, erythromycin, ritonavir) may increase galantamine levels and side effects; dose adjustments may be needed.
• Galantamine does not affect the blood levels of memantine, digoxin, or warfarin, but minor interactions on their effects may still occur.

Interactions with food items

• Galantamine can be taken with or after food to reduce stomach upset and nausea.
• Food slightly slows the absorption of galantamine but does not alter the amount of the medicine your body absorbs.
• Maintain a consistent eating routine to keep galantamine levels steady in your body.
• No specific foods need to be avoided, but avoid excessive alcohol as it may worsen side effects.
• Maintain adequate hydration and a balanced diet to support overall health while taking galantamine.

Overdose

Missed a Dose