One precaution to consider when taking Epsom salt, also known as magnesium sulfate, is to not take a higher dose of it than a doctor recommends. Side effects of taking this mineral are diarrhea, upset stomach, dizziness or flushing. More severe side effects include an irregular heartbeat, severe drowsiness, and muscle paralysis or weakness, states Everyday Health. It is important to contact a doctor if there are signs of an allergic reaction such as hives or itching.
People use Epsom salt as a laxative to relieve constipation and clear the colon. If an individual experiences rectal bleeding or has difficulty with bowel movements after using this mineral, it is important to contact a doctor because it can be a sign of a more severe illness, according to Everyday Health. Before having any surgical procedure, it is necessary to alert the doctor of the Epsom salt intake. Those who drink alcohol or caffeine, smoke, or use drugs should consult a doctor before taking magnesium sulfate.
Those who are pregnant and are going to deliver their baby within hours should not take Epsom salt, notes Everyday Health. Epsom salt is a pregnancy category D drug, so it has the potential to harm an unborn baby by causing low levels of calcium or bone problems in the fetus.