If you are taking a diuretic for congestive heart failure or other condition with swelling, you probably will notice that you will need to urinate more frequently. If this becomes a problem at night, let your provider know. You can actually help your diuretic be more effective. By cutting down on the amount of salt in your diet, it is easier for these drugs to work. Ask your provider or dietitian for specific reduced-sodium diet ideas.
Diuretics can cause side effects.
They may be given with other medications that increase the chance of certain side effects. The most common side effect is low blood pressure caused by the loss of too much fluid. This is more common in people over the age of 65, and in people taking other medications that can lower blood pressure. An early sign of becoming fluid depleted is becoming dizzy or lightheaded when standing up. Always get up slowly, especially at night or first thing in the morning.