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What are the possible side effects of potassium chloride?

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Quick Answer

Possible side effects of potassium chloride include diarrhea, vomiting, gas and nausea, according to WebMD. Some people may experience an upset stomach after taking potassium chloride. It is important to notify a physician if these side effects become persistent or worsen.

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Full Answer

Serious possible side effects of potassium chloride include tarry or black stools, pain in the stomach or abdomen, difficulty swallowing, and vomit that resembles coffee grounds, reports Drugs.com. If serious side effects occur, it is important to seek medical help immediately.

Other possible side effects of potassium chloride include an irregular heartbeat, pain in the chest, paralysis and muscle weakness, notes Drugs.com. Some people may experience tingling or numbness in the hands, feet, lips or skin after taking potassium chloride. Some people may feel confused, anxious or listless after taking potassium chloride.

Although it is rare, some people may be allergic to potassium chloride, states WebMD. Signs of an allergic reaction include difficulty breathing, a rash and intense dizziness. An allergic reaction may cause swelling or itching in the tongue, throat or face.

Many people who take potassium chloride do not experience any side effects, according to WebMD. If a doctor prescribes potassium chloride, it is usually because the health benefits outweigh the risk of side effects.

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