chf reduces kidney function and may lead to symptoms of fluid overload and retention. many chf patients are therefore prescribed diuretics and have their diet limited for sodium intake. additionally the drinking of large amounts or even moderate amounts of tea coffee and other fluids is usually discouraged. a healthy adult may be asked to drink at least 64 ounces (8 cups) of liquid per day. a chf patient is typically asked to keep fluid intake to about 32 ounces (4 cups) per day including water. they clearly should avoid taking in more than 6 cups of fluid daily or 48 ounces.
congestive heart failure patients should or should not drink water or other fluids