Unlikely from iron: Iron may cause constipation, but does not in and of itself cause lethargy. I would wonder about pregnancy and thyroid disease. Have you confirmed that you have not become pregnant? Ask your doctor about a thyroid stimulating hormone (TSH) test.
Answered 8/5/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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