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Is Green Stool a Side Effect of Calcium Supplements?



I just started taking Caltrat with vitamin D. I am on several other meds for bipolar, asthma, and COPD. I got up this morning and had a light green stool. Is this normal? I started it last week. Thank you.


Green stool is not considered a side effect of calcium supplementation.

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Response by:

Margery   Gass, MD Margery Gass, MD
Formely, Professor, Clinical Obstetrics & Gynecology
College of Medicine
University of Cincinnati