RANTAC 300mg Tablet 20's

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Drug Information for RANTAC 300mg Tablet 20's

What is RANTAC 300mg Tablet used for?

RANTAC 300mg Tablet is used for the treatment of following conditions:

  • Gastro-oesophageal reflux disease
  • Indigestion and heartburn
  • Peptic ulcers
  • Non-steroidal anti-inflammatory drug induced peptic ulcer
  • Zollinger-Ellison syndrome

RANTAC 300mg Tablet may also be prescribed for other conditions as determined by the doctor.

How does RANTAC 300mg Tablet work?

RANTAC 300mg Tablet belongs to the class of drugs called histamine-2 receptor blockers. This drug acts by inhibiting the action of histamine on the parietal cells of GI tract. This reduces the production of stomach acid and prevents the ulcers in oesophagus, stomach and duodenum.

How to use RANTAC 300mg Tablet?

The dosage and the drug form depend on the age, weight and medical condition of an individual. Use RANTAC 300mg Tablet as prescribed by your doctor.

  • Do not crush or chew RANTAC 300mg Tablet tablet . Dissolve effervescent tablet completely in the water and take the mixture.
  • Shake the suspension well before taking each dose of RANTAC 300mg Tablet syrup so as to ensure the uniform mixing of the drug. Use a measuring cup while taking each dose.
  • RANTAC 300mg Tablet injection should be administered only under the medical supervision. Always use a disposable needle and syringe for injecting the medicine.

The overdose symptoms of RANTAC 300mg Tablet may include:

  • Severe dizziness
  • Trouble walking
  • Difficulty speaking

What are the drugs that interact with RANTAC 300mg Tablet?

Drugs that interact with RANTAC 300mg Tablet include the following:

  • Atazanavir
  • Cobicistat
  • Dasatinib
  • Loperamide
  • Neratinib
  • Pazopanib
  • Simethicone

This is not a comprehensive list of drug interactions. Consult your doctor to know more about other possible drug interactions.

What are the side effects of RANTAC 300mg Tablet?

The following are the most common side effects of RANTAC 300mg Tablet tablet/syrup:

  • Nausea
  • Vomiting
  • Headache
  • Constipation
  • Diarrhoea
  • Stomach pain

The following are the severe side effects and you may require immediate medical attention:

  • Heartburn
  • Frequent chest pain
  • Light-headedness

This is not a complete list of side effects and others may occur. Please consult your doctor to know more about other possible side effects.

What special precautions should be followed while using RANTAC 300mg Tablet?

  • Avoid using the medicine if you are allergic to RANTAC 300mg Tablet or similar drugs.
  • Seek doctor’s advice before using any other drug or herbal products while on RANTAC 300mg Tablet.
  • Do not exceed the dose more than what is prescribed.
  • Keep the medication away from the reach of children.
  • Avoid driving or operating heavy machinery while using RANTAC 300mg Tablet, as it may cause dizziness.

You are advised not to use RANTAC 300mg Tablet if

  • it has passed the expiry date of the medicine printed on the pack.
  • the foil or packaging is torn or shows signs of tampering or there is discolouration.

What should you tell your doctor before using RANTAC 300mg Tablet?

  • Tell your doctor if you have any history of clotting disorders, phenylketonuria, kidney or liver disease.
  • Inform the doctor if you are taking any other drugs, OTC medications, herbal products or nutritional supplements.
  • Notify the doctor if you are pregnant or breastfeeding.

Frequently Asked questions about RANTAC 300mg Tablet

  1. Is it safe to use RANTAC 300mg Tablet tablet during pregnancy?
  2. Consult your doctor before using RANTAC 300mg Tablet medication during pregnancy. Take RANTAC 300mg Tablet only when prescribed by the doctor.

  3. Is it common to have symptoms like coughing up mucus and chest pain while using RANTAC 300mg Tablet?
  4. Coughing up mucus and chest pain are the rare and severe side effects of RANTAC 300mg Tablet. Consult your doctor immediately if you experience any of the above symptoms.

  5. How long does RANTAC 300mg Tablet medication take to show its effects?
  6. RANTAC 300mg Tablet medication may take an hour to relieve the symptoms such as indigestion and heartburn.  

  7. What are the other formulations of RANTAC 300mg Tablet available?
  8. RANTAC 300mg Tablet is available as tablet, liquid, syrup and injection.


The contents of this website are for informational purposes only and not intended to be a substitute for professional medical advice, diagnosis, or treatment.  Please seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Do not disregard professional medical advice or delay in seeking it because of something you have read on this website.

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