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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Dark Red Tongue While On Iron Supplement?

Yes, I went to the Dentist and she said my tongue was unusually dark red. That I might be missing a Vitamin or there might be a reaction to the medications I take. I went online and it said maybe Iron. So I purchased an Iron supplement 28mg. Now I have diarrhea for the past two weeks and today it was black. Could the Iron be causing this? My current meds are: Crestor, Plavix, Zetia, B complex, calcium, and D3 2000.
posted on Thu, 12 Feb 2015
Twitter Tue, 24 Feb 2015 Answered on
Twitter Wed, 25 Feb 2015 Last reviewed on
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Dentist,  's  Response
Hello,
Check your magnesium levels. Updating your blood work is recommended as an excellent way to check for deficiencies or excesses that can be responsible for a color change. Your hemoglobin and blood oxygenation level can be a factor. Concern is greater for a black, tar like stool than just a change to a darker color with increased iron intake. Make that it is not excessive. Blood in stool and color change can be an indicator of intestinal bleeding or an ulcer. Consult with your physician if additional diagnostic testing is needed such as a colonoscopy. Medicine interactions should be reviewed with your doctor before taking any supplements including vitamins.
Certain disorders of the mouth can often produce red tissue in the oral cavity. Your dentist can recheck your tongue once you have checked your systemic function.
Thank you for your inquiry.
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What Causes Dark Red Tongue While On Iron Supplement?

Hello, Check your magnesium levels. Updating your blood work is recommended as an excellent way to check for deficiencies or excesses that can be responsible for a color change. Your hemoglobin and blood oxygenation level can be a factor. Concern is greater for a black, tar like stool than just a change to a darker color with increased iron intake. Make that it is not excessive. Blood in stool and color change can be an indicator of intestinal bleeding or an ulcer. Consult with your physician if additional diagnostic testing is needed such as a colonoscopy. Medicine interactions should be reviewed with your doctor before taking any supplements including vitamins. Certain disorders of the mouth can often produce red tissue in the oral cavity. Your dentist can recheck your tongue once you have checked your systemic function. Thank you for your inquiry.