Triamterene belongs to the class of medications called diuretics ("water-pills"). It is used for the treatment of edema (fluid retention) in various types of conditions including congestive heart failure and certain types of liver and kidney conditions. Triamterene can be used alone or along with another diuretic (usually hydrochlorothiazide) for the treatment of edema. This medication works by making the body lose excess water and salt without causing potassium to be lost from the body. Potassium supplements are usually not required with this medication.

Your doctor may have suggested this medication for conditions other than the ones listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.

How should I use this medication?

The usual recommended dose ranges from 100 mg to 300 mg daily taken after a meal. The usual starting dose is 100 mg twice daily after meals. Your doctor will determine your response to the medication and adjust the dose accordingly. The higher doses (200 mg to 300 mg) should be taken in two divided doses.

Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones given here, do not change the way that you are taking the medication without consulting your doctor.

It is important that this medication be taken exactly as prescribed by the doctor. If you miss a dose, take it as soon as possible and continue on with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue on with your regular dosing schedule. Do not double doses.