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Cimetidine

Medical and Pharmacy Editor:

Brand Name: Tagamet HB

Generic Name: Cimetidine

Drug Class: Histamine H2 Antagonists

What Is Cimetidine and How Does It Work?

Cimetidine is a prescription medication used as an acid reducer. Cimetidine relieves heartburn associated with acid indigestion and sour stomach. Cimetidine also prevents heartburn associated with acid indigestion and sour stomach brought on by eating or drinking certain foods and beverages.

Cimetidine is available under the following different brand names: Tagamet HB.

Dosages of Cimetidine:

Adult and Pediatric Dosages:

Injectable solution

  • 150 mg/ml

Oral solution

  • 300 mg/5 ml

Tablet

  • 200 mg
  • 300 mg
  • 400 mg (Rx)
  • 600 mg (Rx)
  • 800 mg (Rx)

Dosage Considerations – Should be Given as Follows:

Duodenal Ulcer (off-label)

  • Children under 16 years of age: Use only if benefit outweighs risks
  • 20-40 mg/kg/day intravenously/orally divided every 6 hours
  • Neonates (under 28 days old): 5-20 mg/kg/day intravenously/orally divided every 8-12 hours
  • Infants: 10-20 mg/kg/day intravenously/orally divided every 6-12 hours

Geriatric:

  • Not drug of choice in elderly because of increased potential for confusion and drug interactions
  • Benign Gastric Ulcer
    • 800 mg orally each evening OR
    • 400 mg orally every 12 hours OR
    • 300 mg orally every 6 hours
  • Duodenal Ulcer
    • 800 mg orally each evening OR
    • 400 mg orally every 12 hours OR
    • 300 mg orally every 6 hours
Medically Reviewed by a Doctor on 7/25/2017



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