You cannot tell...: ...Anything about a pill's effects or side effects from the appearance of the pill itself. Niferex is an iron supplement, which sometimes causes constipation, but the only way to find out if it will irritate your stomach is to start taking it; you can always stop if it does. Taking it with food will decrease the chance of stomach irritation.
Answered 5/9/2012
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2 doctors weighed in across 2 answers
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