Revicon Adverse Reactions

The amount of nutrients in this product is relatively nontoxic and is usually well tolerated. However, undesirable effects may occur, particularly when the nutrients are used at high doses (e.g., concomitant use of other multivitamin-mineral supplements), see also Overdosage.
Vitamin A: Skin and subcutaneous tissue disorders: Dermatitis, photosensitivity reactions.
Vitamin B₂: Renal and urinary disorders: Yellow-orange discoloration to urine.
Iron: Metabolism and nutrition disorders: Anorexia.
Nervous system disorders: Metallic taste.
Gastrointestinal disorders: Black/dark stools, bloating, constipation (may lead to fecal impaction particularly in the elderly), diarrhea, epigastric pain/discomfort, exacerbation of diarrhea (in patients with inflammatory bowel disease), flatulence, gastrointestinal irritation, heartburn, nausea, stomach discomfort, vomiting.
Injury, poisoning and procedural complications: Long-term administration of large amounts of iron may cause hemosiderosis clinically resembling hemochromatosis, which is a genetic condition characterized by excessive iron absorption, excess tissue iron stores, and potential tissue injury.
Brewer's Yeast: Immune system disorders: Allergic reactions (occasional).
Nervous system disorders: Migraine headaches (in sensitive individuals).
Gastrointestinal disorders: Flatulence, stomach discomfort.