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Cimetidine

OTC Oral RxCUI 197505
Contents

Overview

Active ingredient
Cimetidine
Established class
Histamine-2 Receptor Antagonist
Mechanism class
Histamine H2 Receptor Antagonists
Route
Oral
Label date
2026-08-18

Indications and usage

Uses

  • relieves heartburn associated with acid indigestion and sour stomach
  • prevents heartburn associated with acid indigestion and sour stomach brought on by eating or drinking certain foods and beverages

Purpose

Acid reducer

Dosage and administration

Directions

  • adults and children 12 years and over:
  • to relieve symptoms, swallow 1 tablet with a glass of water
  • to prevent symptoms, swallow 1 tablet with a glass of water right before or any time up to 30 minutes before eating food or drinking beverages that cause heartburn
  • do not take more than 2 tablets in 24 hours
  • children under 12 years: ask a doctor

Warnings

Allergy alert: Do not use if you are allergic to cimetidine or other acid reducers Do not use

  • if you have trouble or pain swallowing food, vomiting with blood, or bloody or black stools. These may be signs of a serious condition. See your doctor.
  • with other acid reducers Ask a doctor before use if you have
  • frequent chest pain
  • frequent wheezing, particularly with heartburn
  • unexplained weight loss
  • nausea or vomiting
  • stomach pain
  • had heartburn over 3 months. This may be a sign of a more serious condition.
  • heartburn with lightheadedness, sweating or dizziness
  • chest pain or shoulder pain with shortness of breath; sweating; pain spreading to arms, neck or shoulders; or lightheadedness
  • kidney disease
  • liver disease Ask a doctor or pharmacist before use if you are taking
  • a prescription drug. Acid reducers may interact with certain prescription drugs. Stop use and ask a doctor if
  • you need to take this product for more than 14 days
  • stomach pain continues
  • your heartburn continues or worsens If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away (1-800-222-1222).

Do not use

  • if you have trouble or pain swallowing food, vomiting with blood, or bloody or black stools. These may be signs of a serious condition. See your doctor.
  • with other acid reducers

Ask a doctor before use if

Ask a doctor before use if you have

  • frequent chest pain
  • frequent wheezing, particularly with heartburn
  • unexplained weight loss
  • nausea or vomiting
  • stomach pain
  • had heartburn over 3 months. This may be a sign of a more serious condition.
  • heartburn with lightheadedness, sweating or dizziness
  • chest pain or shoulder pain with shortness of breath; sweating; pain spreading to arms, neck or shoulders; or lightheadedness
  • kidney disease
  • liver disease

Ask a doctor or pharmacist before use if

Ask a doctor or pharmacist before use if you are taking

  • a prescription drug. Acid reducers may interact with certain prescription drugs.

Stop use and ask a doctor if

and ask a doctor if

  • you need to take this product for more than 14 days
  • stomach pain continues
  • your heartburn continues or worsens

Pregnancy or breast-feeding

If pregnant or breast-feeding, ask a health professional before use.

Active ingredient (label)

(in each tablet) Cimetidine 200 mg

Inactive ingredients

s hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, povidone, pregelatinized starch, sodium lauryl sulfate, sodium starch glycolate, titanium dioxide

Storage and handling

Other information

  • store at 20°-25°C (68°-77°F)

Keep out of reach of children

of children. In case of overdose, get medical help or contact a Poison Control Center right away (1-800-222-1222).