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KCl is essential for the proper functioning of the heart, kidneys, muscles, nerves, and digestive system. Usually the food you eat supplies all of the KCl you need. However, certain diseases (e.g., kidney disease and gastrointestinal disease with vomiting and diarrhea) and drugs, especially diuretics ('water pills'), remove KCl from the body. KCl supplements are taken to replace KCl losses and prevent KCl deficiency. KCl is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
KCl comes in oral liquid, powder, granules, effervescent tablets, regular tablets, extended-release (long-acting) tablets, and extended-release capsules. It usually is taken two to four times a day, with or immediately after meals. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take KCl exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Take all forms of KCl with a full glass of water or fruit juice. Add the liquid to water. Dissolve the powder, granules, or effervescent tablets in cold water or fruit juice according to the manufacturer's directions or the directions on your prescription label; mix the drug well just before you take it. Cold liquids help mask the unpleasant taste. Swallow extended-release tablets and capsules whole. Do not chew them or dissolve them in your mouth. |