Do not use potassium supplements, salt substitutes, or low-sodium milk unless your doctor has told you to.
Avoid a diet high in salt. Too much salt will cause your body to retain water and can make  hydrochlorothiazide and triamterene less effective.
Hydrochlorothiazide may increase your risk of skin cancer. Avoid sunlight or tanning beds. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors. Your doctor may want you to have skin examinations on a regular basis.
Avoid becoming overheated or dehydrated during exercise, in hot weather, or by not drinking enough fluids. Follow your doctor's instructions about the type and amount of liquids you should drink. In some cases, drinking too much liquid can be as unsafe as not drinking enough.
Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.
