Ranitidine is used for the treatment of ulcers, gastroesophageal reflux and the conditions in which the stomach produces excessive amounts of acid, such as Zollinger-Ellison syndrome.


It can also be used against burning of the stomach associated with stomach acidity and, in some cases, to treat bleeding of the first digestive tract and prevent some types of ulcers, damage to the stomach associated with taking NSAIDs and inhalation of gastric acid during anesthesia.


What is Ranitidine?


Ranitidine is an H2 antagonist drug. It acts by reducing the amount of acid produced by the stomach.


How should Ranitidine be taken?


Typically, Ranitidine is taken orally one or two times a day, in the form of tablets, effervescent tablets, effervescent granules or syrup.


To prevent the appearance of heartburn it can be taken 30-60 minutes before eating (or drink) the food (or drink) that triggers them.


Side effects associated with Ranitidine


The possible adverse effects of Ranitidine may include:


  • Headache
  • Constipation
  • Diarrhea
  • Nausea
  • Vomiting
  • Stomach ache


It is important to tell your doctor if these symptoms are severe or persistent.


Contraindications and warnings associated with the use of Ranitidine


Ranitidine should not be taken for more than two days without such an indication from a doctor. If the symptoms last for more than two weeks it is recommended to stop treatment and call your doctor.


Moreover, before taking Ranitidine, it is also important to tell your doctor if:


  • You have any allergies to the active substance, its excipients or other drugs
  • You are taking other medications, herbal remedies and supplements, remembering to mention anticoagulants and triazolam
  • You suffer (or have suffered) from porphyria, phenylketonuria, or kidney or liver disease
  • You are pregnant or breastfeeding