Ranitidine

Ranitidine is used for short-term relief of heartburn, indigestion and excess acid. Ranitidine belongs to a group of medications called histamine type-2 (H2) receptor antagonists. Ranitidine works by reducing the amount of acid produced in your stomach.

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​What is this medication used for

Ranitidine is used for short-term relief of heartburn, indigestion and excess acid. Ranitidine belongs to a group of medications called histamine type-2 (H2) receptor antagonists. Ranitidine works by reducing the amount of acid produced in your stomach.

 

Dosage and How to Use

Adults

The recommended dose is 150mg (one tablet) to be taken twice daily for up to 14 days or 300mg (2 tablets) at bedtime. It may be taken with or without food.

 

Side Effects, Precautions, Contraindication

Before using this medication

Medical advice should be sought before use if you have any of the following conditions or symptoms: heartburn for over 3 months, chest pain or shoulder pain with shortness of breath, sweating, pain spreading to arms, neck or shoulders, light-headedness, frequent wheezing particularly with heartburn, unexplained weight loss, nausea or vomiting, history of peptic ulcer, stomach pain particularly if you are taking a non-steroidal anti-inflammatory drug (NSAID) e.g. aspirin, ibuprofen, naproxen, diclofenac ,pain when swallowing food, bloody or black sticky stools.

This medication should be avoided if you have a known history of allergy to ranitidine or any of the other listed ingredients in the product.

​Please  seek  your  doctor's  or  pharmacist's  advice  before  using  this  medication  if  you  are  pregnant  or breastfeeding.

 

Interactions with other medications

Be sure to inform your doctor and/or pharmacist if you are taking, have recently taken or plan to take other medications, nutritional supplements or herbal products.

​In particular, be sure to mention any of the following: anti-fungal medications (e.g. ketoconazole, itraconazole); blood-thinning medications (e.g. warfarin), NSAIDs or any anti-epileptic medications

 

Side Effects

Common side effects: diarrhoea, headache. stomach pain, constipation, nausea

​If you are 65 years or older, use this drug with care as you could experience more side effects. 

 

Handling and Storage

Keep out of reach and sight of children.
Store in a cool dry place, protected from light.​ 

 

When to seek further medical advice

Inform  your  doctor  and/or  pharmacist  immediately  if  you  experience  any  allergic  symptoms  (e.g.  rashes, itchiness, difficulty in breathing or eye swelling) or serious side effects due to this medication such as:

  • Severe stomach pain
  • Yellowing of the skin or eyes
  • Confusion
  • Unexplained fever and feeling faint , especially when standing up

Consult a doctor if condition worsens or does not improve after 14 days of use. Do not use this medication for more than 14 days without medical supervision.

 

Just Ask! Your Pharmacist - Know Your Medicine, Get It Right! 

Information updated 25th October 2016
Prepared by the Pharmaceutical Society of Singapore (www.pss.org.sg)


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