Ranitidine is in a group of drugs called histamine-2 blockers. Ranitidine works by reducing the amount of acid your stomach produces.

Ranitidine is used to treat and prevent ulcers in the stomach and intestines. It also treats conditions in which the stomach produces too much acid, such as Zollinger-Ellison syndrome. Ranitidine also treats gastroesophageal reflux disease (GERD) and other conditions in which acid backs up from the stomach into the esophagus, causing heartburn.

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  • Taladine, Zantac, Zantac 150, Zantac 300, Zantac 75, Zantac EFFERdose
  • Stop taking ranitidine and call your doctor at once if you have a serious side effect such as:

    chest pain, fever, feeling short of breath, coughing up green or yellow mucus;
    easy bruising or bleeding, unusual weakness;
    fast or slow heart rate;
    problems with your vision;
    fever, sore throat, and headache with a severe blistering, peeling, and red skin rash; or
    nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
    Less serious side effects may include:

    headache (may be severe);
    drowsiness, dizziness;
    sleep problems (insomnia);
    decreased sex drive, impotence, or difficulty having an orgasm; or
    swollen or tender breasts (in men);
    nausea, vomiting, stomach pain; or
    diarrhea or constipation.
  • GERD: The current recommended adult oral dosage is 150 mg twice daily.