CIMETIDINE is a Schedule H drug.
Cimetidine belongs to a group of drugs called Histamine H2 Receptor Antagonists. It works by decreasing the amount of acid produced in the stomach.Cimetidine is used in the treatment of acidity, heartburn and stomach ulcers.Cimetidine works by decreasing the amount of acid your stomach produces.Cimetidine is used to treat and prevent certain types of ulcer, and to treat conditions that cause the stomach to produce too much acid. Cimetidine is also used to treat gastroesophageal reflux disease (GERD), when stomach acid backs up into the esophagus and causes heartburn.


CIMETIDINE is generally used to treat: Ulcer, Stomach, GERD, Esophagitis, Zollinger-Ellison Syndrome
CIMETIDINE can address symptoms like: Heartburn, Abdomen Pain, Difficulty Swallowing, Difficulty Sleeping, Cough

Frequently Asked Questions

Q: Is it safe on my liver?
A: Check with your Doctor first

Q: Is it safe on my kidney?
A: Check with your Doctor first

Q: Can I take it with alcohol?
A: Not Safe

Q: Is it safe for children?
A: Not Advised for age < 12yrs

Q: Can it be taken during pregnancy?
A: Considered as Generally Safe – not enough studies to prove risk

Q: Is it safe to take for someone breastfeeding?
A: Not Safe

How Do I Take It?

CIMETIDINE is generally taken With Food.
Route of Administration: Oral


  • Cimetidine is a well tolerated and safe medicine with a very low incidence of side effects.
  • Take Cimetidine before going to bed if you are taking this medicine once a day as it is very effective in controlling stomach acid released in the midnight.
  • If you are also taking an antacid, take it two hours before or after taking Cimetidine.
  • Avoid taking soft drinks, citrus fruits like orange and lemon, which can irritate the stomach and increase acid secretion.
  • Inform your doctor if you do not feel better after taking Cimetidine for two weeks or 14 days as you may be suffering from some other problems.

Symptoms of Overdosage

CIMETIDINE over-dosage can result in: Slurred Speech, Difficulty Breathing, Difficult To Wake From Sleep, Mood Swings

Common Side-Effects

CIMETIDINE : Constipation, Muscle Pain, Diarrhoea, Dizziness, Fatigue (tiredness), Drowsiness, Head Headache

Serious Side-Effects

CIMETIDINE : Hallucination, Impotence, Hypoparathyroidism, Alopecia, Hypocalcemia, Coma, Hypotension, Tachycardia, Bradycardia, Mood Swings, Confusion, Agitation, Depressed Mood, Hallucinations, Difficulty Urinating

Rare Side-Effects

CIMETIDINE : Eosinophilia, Neutropenia, Thrombocytopenia, Anemia, Autoimmune Hemolytic Anemia, Throat Soreness, Fever, Difficulty Breathing, Fatigue (tiredness), Nausea, Vomit, Irregular Heartbeat, Eyes Discoloration

Food Interactions

Avoid taking soft drinks, citrus fruits like orange and lemon, which can irritate the stomach and increase acid secretion.

Disease Interactions

CIMETIDINE can interfere with: Drug Induced Liver Disease, Gastrointestinal Bleeding

Technical Classification


Storage Conditions

Room Temperature (Between 15 To 25 C)

Available Alternatives

Common Drugs with CIMETIDINE as Ingredient