May be the iron: I could be any iron that you are taking, but if it's black, tar like then that is more serious and needs to be tested by a physician
Answered 6/23/2014
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A doctor has provided 1 answer
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
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