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A member asked:
Took iron pill for 2 days for anemia symptoms fatigue lightheaded, headache. now my poop color is olive green. (light green) instead of dark green or black. does that mean its working or not working?
A doctor has provided 1 answer
When you take iron supplements by mouth, only about 10% is absorbed and the rest is excreted in stool giving black or green discoloration to the stool. Efficacy is measured by measuring serum iron panel after a few weeks and seeing improvement.
Answered 9/22/2023
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