Acetazolamide is a prescription drug used for glaucoma, altitude sickness, certain seizure types, and some fluid retention problems. You may see it under brand names or as generic acetazolamide. This page gives clear, practical information so you know what to expect and what to ask your doctor.
Acetazolamide lowers pressure in the eye by reducing aqueous humor production and changes blood acid balance to stimulate breathing at high altitude. For seizures it can change brain chemistry and help when other medications fall short. Effects can appear within hours for altitude symptoms and within days for eye pressure.
Dose depends on the reason you take acetazolamide. For altitude sickness a common dose is 125 mg to 250 mg twice daily starting a day before ascent and during exposure. For glaucoma and seizures your doctor will choose the right dose and schedule for you. Take with food if it upsets your stomach and do not stop suddenly without medical advice.
If you miss a dose take it when you remember unless the next dose is near then skip the missed dose. Do not double doses. Store tablets at room temperature away from moisture and heat. Tell your doctor about kidney or liver problems, adrenal issues, and any sulfa allergy before you start.
Common side effects include tingling in the fingers and toes, increased urination, taste changes, and mild stomach upset. Less common but serious problems include allergic reactions, low sodium or potassium, dehydration, and blood disorders. Stop and seek help if you get rash, fever, severe tiredness, trouble breathing, or signs of infection.
Acetazolamide can interact with aspirin, lithium, some diuretics, and certain anti seizure drugs. Share a full list of medicines and supplements with your prescriber and pharmacist. Your doctor may check blood tests for electrolytes and kidney function while you take the drug.
If you are pregnant or planning pregnancy talk to your provider since acetazolamide may not be safe in pregnancy. If breastfeeding get specific advice because the drug can pass into breast milk. When traveling to high altitude consider carrying acetazolamide only under a doctor plan and keep a list of your medicines.
Questions to ask your clinician include how long you should take it, whether to monitor electrolytes, and how it fits with other treatments. Keep hydrated, watch for side effects, and contact your care team if anything feels off. This quick guide is for information only and does not replace medical advice from your provider. If you want more details look for clinical sources or ask a pharmacist to explain interactions and dosing for your case.
Keep notes on any new symptoms you notice daily.
Need help finding reliable information or a pharmacy? Use trusted pharmacy reviews, check licensing, and talk to a local pharmacist before ordering medicine online. Keep a printed list of your prescriptions, dosing, allergies, and emergency contacts so any clinician can respond quickly if you have a reaction or complications overseas. Ask questions until you understand.
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