B12 SIDE EFFECTS
- Generic Name: liver-stomach concentrate with intrinsic factor
- Brand Name: B12
- Drug Class: B Vitamins, Vitamins, Water-Soluble
Rarely, iron in therapeutic doses produces gastrointestinal reactions, such as diarrhea or constipation. Reducing the dose and administering it with meals will minimize these effects in the iron-sensitive patient.
In extremely rare instances, skin rash suggesting allergy has been noted following the oral administration of liver-stomach material. Allergic sensitization has been reported following both oral and parenteral administration of folic acid.
SRC: NLM .