Do not take this medicine with any of the following medications:

-cidofovir
-dofetilide
-eplerenone
-potassium supplements
-tranylcypromine
This medicine may also interact with the following medications:

-certain medicines for blood pressure, heart disease like benazepril, lisinopril, losartan, valsartan
-lithium
-medicines for diabetes
-medicines that relax muscles for surgery
-NSAIDs, medicines for pain and inflammation, like ibuprofen or naproxen
-other diuretics
-penicillin G potassium

They need to know if you have any of these conditions:

-diabetes
-immune system problems, like lupus
-kidney disease or stones
-liver disease
-small amount of urine or difficulty passing urine
-an unusual or allergic reaction to triamterene, hydrochlorothiazide, sulfa drugs, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Visit your doctor or health care professional for regular check-ups. You will need lab work done before you start this medicine and regularly while you are taking it. Check your blood pressure regularly. Ask your health care professional what your blood pressure should be, and when you should contact them.
This medicine may increase blood sugar. Ask your healthcare provider if changes in diet or medicines are needed if you have diabetes.
You may need to be on a special diet while taking this medicine. Ask your doctor. Also, ask how many glasses of fluid you need to drink a day. You must not get dehydrated.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid or limit alcoholic drinks.
Talk to your health care professional about your risk of skin cancer. You may be more at risk for skin cancer if you take this medicine.
This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.

Keep out of the reach of children and pets.
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Protect from light. Throw away any unused drug after the expiration date.