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Is Black Stool A Serious Issue After Starting High Doses Of Vitamin C And Magnesium?

Hi for the last 3 days ive been on a multivitamin but due to the multivitamin having no vitamin c or much magnesium i started taking 2 1 thousand mg of vitamin c and 500mg of magnesium. Today i saw that my stool was bkack ive never seen that happen. Please let me know if its more serious

posted on Tue, 1 Aug 2023

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

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