Heart failure is a condition in which the heart can't pump blood effectively to the lungs or the rest of the body.
This can be because the person has developed a weakened heart muscle or because the heart muscle has thickened or stiffened, making it difficult to fill the heart and backing up blood into the lungs.
With heart failure, the weakened heart pumps less blood than usual, causing the kidneys and adrenal glands to produce chemicals that help the body to hold onto salt and water.
Follow the label directions on how often to take your diuretic. If you are taking a single dose a day, take it in the morning with your breakfast or right afterwards. If you are taking more than one dose a day, take the last dose no later than 4 p.m.
The number of doses you take each day, the time allowed between doses, and how long you need to take the medication will depend on the type of diuretic prescribed, as well as your condition.
Dizziness, lightheadedness: Try rising more slowly when getting up from a lying or sitting position.
Blurred vision, confusion, headache, increased perspiration (sweating), restlessness: If these effects persist or are severe, contact your doctor.
Dehydration: Signs include dizziness, extreme thirst, excessive dryness of the mouth, decreased urine output, dark-colored urine, or constipation. If these symptoms occur, don't assume you need more fluids. Call your doctor right away.