49. Patients who take iron preparations should be warned of the possible side effects, which may include:1. dizziness and orthostatic hypotension.2. nausea, vomiting, diarrhea, and stomach cramps.3. drowsiness, lethargy, and fatigue.4. neuropathy and tingling in the extremities.
(2) Oral iron preparations are often used to help those patients who have iron deficiency anemia to regain a positiveiron balance; these preparations need to be supplemented with adequate dietary intake of iron. It can take 2–3 weeksto see improvement and up to 6–10 months to return to a stable iron level once a deficiency exists; the most commonadverse effects associated with oral iron are related to direct GI upset, anorexia, nausea, vomiting, diarrhea, dark stools,and constipation.