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What are the main effects of potassium chloride?

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Quick Answer

The main side effects of potassium chloride supplements include an upset stomach, nausea, vomiting, gas and diarrhea, according to WebMD. Its main uses are for treating low amounts of potassium in the blood.

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Full Answer

If any side effects from this supplement persist, WebMD recommends seeing a doctor or pharmacist as soon as possible. Other, more serious side effects include painful or difficult swallowing, vomit that looks like coffee grounds, stomach pain or black and tarry stools. Allergic reactions to this supplement are rare, but symptoms include a rash; itching or swelling of the tongue or throat; severe dizziness; and difficulty breathing. Other noticed side effects may be reported to the Food and Drug Administration.

Potassium chloride is taken orally as directed by a doctor. Do not lay down for up to 10 minutes after taking a dose, advises WebMD. An upset stomach may be prevented if a patient takes each dose with food and a glass of water. Crushing or chewing the capsules releases all the drug at once, which increases the risk for potential side effects. Potassium chloride needs to be taken regularly to get the most benefits. It helps if patients remember to they take it at the same time every day.

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