Major side effects include confusion and hallucinations (usually in elderly or critically ill patients), enlargement of the breasts; impotence (usually seen in patients on high doses for prolonged periods); decreased white blood cell counts.
Other side effects include:
PRESCRIPTION: Yes and OTC (Heart Burn)
GENERIC AVAILABLE: Yes
PREPARATIONS: Tablets: 200, 300, 400, and 800 mg. Liquid: 300 mg/5 ml. Injection: 150 mg/ml.
STORAGE: Store at room temperature 15 C to 30 C (59 F to 86 F).
Duodenal ulcers are treated with 800 to 1600 mg at bedtime or 300 mg 4 times a day at meal times and bedtime, or 400 mg twice a day for 4-6 weeks. Maintenance therapy is 400 mg at bedtime.
Active gastric ulcers are treated with 800 mg at bedtime or 300 mg 4 times a day at meal times and bedtime for up to 8 weeks.
The regimen for GERD is 800 mg twice a day or 400 mg 4 times a day for 12 weeks.
Pathological hypersecretory conditions are treated with 300 mg 4 times daily up to 2400 mg daily.
For hospitalized patients who cannot take oral medications, 300 mg of cimetidine may be administered by intravenous or intramuscular injection every 6-8 hours. A continuous intravenous infusion of 37.5 to 50 mg/hour also may be used.
Quick GuideHeartburn Causes, Symptoms, Remedies, and Treatments
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