Ranitidine contains a medicine called ranitidine. This belongs to a group of medicines called H2-receptor antagonists. It lowers the amount of acid in your stomach.

Ranitidine Efferverscent Tablets

Ranitidine Effervescent Tablets 150mg

NOTE: Generic medication. Brand may vary from the picture shown.

includes free private prescription

Ranitidine Effervescent Tablets 300mg

NOTE: Generic medication. Brand may vary from the picture shown.

includes free private prescription

Ranitidine Tablets

Ranitidine Tablets 150mg

includes free private prescription

Ranitidine Tablets 300mg

includes free private prescription


For adults (including the elderly) Ranitidine is used to:

  • heal and stop ulcers in the stomach, or the part of the gut it empties into (the duodenum)
  • help clear up infection in your stomach, when taken with antibiotic medicines (medicines taken to treat germs)
  • stop stomach ulcers when they are a side effect of some medicines
  • stop ulcers from bleeding
  • improve problems caused by acid in the food pipe (oesophagus) or too much acid in the stomach. Both of these can cause pain or discomfort sometimes known as ‘indigestion’, ‘dyspepsia’ or ‘heartburn’
  • stop acid coming up from the stomach while under anaesthetic during an operation.

Taking this medicine

  • Take this medicine by mouth.
  • Dissolve an effervescent tablet in a glass of water. Do not break the effervescent tablet. Wait until the effervescent tablet has been completely dissolved and drink the solution directly.

Stop taking Ranitidine and see a doctor straight away, if you notice any of the following serious side effects, you may need urgent medical treatment:

  • allergic reactions, the signs may include:
    • rash, itching or hives on the skin
    • swelling of your face, lips, tongue or other parts of the body
    • chest pain, shortness of breath, wheezing or having trouble breathing
    • unexplained fever and feeling faint, especially when standing up
  • kidney problems, which can lead to back pain, fever, pain when passing urine, blood in the urine and changes in blood tests
  • severe stomach pain, this may be a sign of something called ‘pancreatitis’
  • a slow or irregular heartbeat

Check with your doctor or pharmacist before taking your medicine if:

  • you have stomach cancer
  • you have kidney problems. You will need to take a different amount of Ranitidine
  • you have had stomach ulcers before and you are taking Non-Steroidal Anti-Inflammatory (NSAID) medicines
  • you have a rare condition called acute porphyria
  • you are over 65 years old
  • you have lung disease
  • you are diabetic
  • you have any problems with your immune system.

If you are not sure if any of the above apply to you, talk to your doctor or pharmacist before using this medicine.

Medical Advice

Please refer to the articles below to find out more information, medical guidance and advice from our doctors on how to best treat the condition.
Learn about available treatments, symptoms, side effects and what you can do to prevent it.

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