1 What is Glauctabs?

Brand: Glauctabs, Neptazane

Generic: Methazolamide Tablet

Glauctabs is a drug used in the treatment of eye conditions with increased intraocular (eye) pressure such as in glaucoma. This drug is available as a tablet containing 25 mg or 50 mg of methazolamide.


You should read the product information leaflet before using this medication. If you have any questions, ask your doctor or pharmacist.

This medication should be taken by mouth as instructed by your doctor. Do not crush or chew the drug because it may diminish its effects. This medication should be taken with a full glass of water unless your doctor tells you otherwise. You should swallow the drug whole.

Your dosage is based on your medical condition and the way you will respond to treatment. Take this drug regularly to experience the most benefits. You should also take this drug at the same time each day.

If you miss a dose, use it as soon as you remember. Continue to use it as prescribed by your doctor or as stated on the package label.


Methazolamide may interact with medications such as:

  • Cisapride
  • Methenamine
  • Large doses of aspirin and aspirin-like drugs (salicylates)
  • Anti-seizure drugs such as phenytoin or phenobarbital
  • Carbonic anhydrase inhibitor eye drops such as dorzolamide or brinzolamide
  • Diabetes medications
  • Digoxin
  • Lithium
  • Stimulant drugs such as amphetamine or ephedrine
  • Topiramate

Side Effects

There are no side effects known aside from a possible allergic reaction in people who have previous or unknown hypersensitivity to the drug.

Watch out for signs of allergic reactions such as:

  • Rash
  • Itching
  • Swelling


Before taking this medication, tell your doctor or pharmacist if you have the following:

  • Allergy to methazolamide
  • Adrenal gland problems
  • Severe kidney disease
  • Severe liver disease
  • Untreated mineral imbalance
  • Breathing problems
  • Diabetes
  • Gout
  • Kidney problems
  • Hyperthyroidism
  • Pregnancy or lactation