Common uses of Cimetidine
This medicine is a histamine blocker used to treat and prevent ulcers. It is also used to treat gastroesophageal reflux disease (GERD). This medicine may also be used to treat other conditions as determined by your doctor.
 

Before using Cimetidine
Some medicines or medical conditions may interact with this medicine. INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. DO NOT TAKE THIS MEDICINE if you are also taking medicine for cancer (nitrosoureas). ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking nifedipine, procainamide, quinidine, theophylline, tricyclic antidepressants, warfarin, zaleplon, or medicine for high blood pressure or heart conditions (beta blockers) or seizures. Inform your doctor of any other medical conditions, allergies, pregnancy, or breast-feeding. Contact your doctor or pharmacist if you have any questions or concerns about using this medicine.
 

Cimetidine Directions
Follow the directions for using this medicine provided by your doctor. IF YOU TAKE MORE THAN 1 DOSE OF THIS MEDICINE DAILY, take this medicine with, or immediately after meals and at bedtime. ANTACIDS MAY BE USED with this medicine unless directed otherwise by your doctor. STORE THIS MEDICINE at room temperature, away from heat and light. IF YOU MISS A DOSE OF THIS MEDICINE, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
 

Cimetidine Cautions
IF YOUR SYMPTOMS DO NOT IMPROVE within a few weeks or if they become worse, check with your doctor. BEFORE YOU BEGIN TAKING ANY NEW MEDICINE, either prescription or over-the-counter, check with your doctor or pharmacist.
 

Possible Cimetidine side effects
SIDE EFFECTS, that may go away during treatment, include diarrhea, headache, dizziness, or drowsiness. If they continue or are bothersome, check with your doctor. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.
 

Drug interactions
Drug interactions can result in unwanted side effects or prevent a medicine from doing its job. Use our drug interaction checker to find out if your medicines interact with each other. Check drug interactions
 

If you take too much Cimetidine
If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include difficulty breathing, fast heartbeat, tremors, vomiting, and restlessness.
 

Additional Cimetidine information
DO NOT SHARE THIS MEDICINE with others for whom it was not prescribed. DO NOT USE THIS MEDICINE for other health conditions. KEEP THIS MEDICINE out of the reach of children. IF USING THIS MEDICINE FOR AN EXTENDED PERIOD OF TIME, obtain refills before your supply runs out.