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Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.



COMMON BRAND NAME(S): Glauctabs, Neptazane


This medication reduces the rate of fluid formation in the inner eye resulting in reduced intraocular pressure. It is used in the treatment of glaucoma.

How To Use

Take this medication with food if stomach upset occurs. Take this medication exactly as prescribed. Do not take this more frequently or stop taking this medication without consulting your doctor. While taking this medication, your doctor may periodically test the intraocular pressure of your eye to evaluate the effectiveness of this medication.

Side Effects

Nausea, loss of appetite, constipation, frequent urination, drowsiness, weakness or headache may occur the first several days as your body adjusts to the medication. If any of these effects continue or become bothersome, inform your doctor. Notify your doctor if you develop: fever, sore throat, unusual bleeding or bruising, skin rash, painful urination, tingling or tremors of the hands or feet. If you notice other effects not listed above, contact your doctor or pharmacist.


Be sure your doctor knows your medical history, especially of: diabetes, kidney disease, liver disease, lung diseases, allergies (especially to sulfa drugs). This medication may cause drowsiness. Use caution when driving or operating dangerous machinery if this effect occurs. Women who are pregnant or may become pregnant should inform their doctors.

Drug Interactions

Before you take this drug, tell your doctor what other drugs you are taking (including nonprescription drugs), especially: lithium, digoxin, aspirin, phenobarbital, diuretics ("water pills"), amphetamines, antidepressants, medication for irregular heartbeats, methenamine. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately.


Do not change brands of this medication without consulting your doctor or pharmacist. Not all brands of this medication are equally effective. Do not allow anyone else to take this medication.

Missed Dose

If you miss a dose, take as soon as remembered; do not take if it is almost time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.


Store at room temperature away from sunlight and moisture.