Sodium bicarbonate - oral

Patient Medicine Information
Why do I need this medicine?
Sodium bicarbonate neutralizes the stomach acid. It is used to provide relief in dyspepsia (acid indigestion), heartburn (food or acid from your stomach backs up into your mouth, leaving a sour or bitter taste) and flatulence (stomach wind).

This medicine may be used to treat other conditions as decided by your doctor.
How do I take this medicine?
Take Sodium bicarbonate exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

Take 1 to 3 hours after meals. Try to take it at the same time each day.

Sodium bicarbonate must be taken regularly for it to be effective. Continue taking this medicine even when you feel better. Do not stop taking it unless instructed by the doctor.

Sodium bicarbonate is available as powder, tablets and solution.

If you have been given powder, measure your dose then mix with adequate amount of water and dissolve completely before taking your dose.

If you have been given the solution, use the oral syringe to measure out your dose. Refer to the package insert for directions on how the oral syringe should be used.
What should I do if I have forgotten to take this medicine?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.
When should I not use this medicine?

Alert your doctor if you have the following conditions:

  • hypernatremia (high sodium level in the blood)
  • hypocalcaemia (low calcium level in the blood)
  • hypochlorhydria (low chloride level in the blood)
  • pulmonary oedema (excess fluids in the lungs)
  • alkalosis (body fluids and tissues are unusually alkaline)

as Sodium bicarbonate may not be suitable for you.

What should I take note of while taking this medicine?

Inform your doctor if you have the following conditions:

  • liver disease
  • low salt (sodium) diet
  • swelling in your body
  • heart disease
  • stomach ulcer
  • kidney disease

Let your doctor know if you are pregnant or breastfeeding.

It is not advisable to take Sodium bicarbonate for long term treatment of stomach acidity.

What side effects could I experience?
Sodium bicarbonate may cause any of the following side effects: stomach cramps, loss of appetite, nausea, vomiting, tiredness and muscle spasms and stomach wind

Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any of these medicines:
  • medicines for high blood pressure or heart disease e.g. captopril
  • antibiotics e.g. tetracycline, rifampicin
  • medicines to treat fungal infections e.g. itraconazole, ketoconazole
  • blood thing medicine e.g. aspirin, dipyridamole
  • lithium (medicine for mood disorders)
  • methotrexate (medicine for cancer)
  • phenytoin (medicine for epilepsy (fits or seizures))
  • penicillamine (medicine to treat rheumatoid arthritis)
  • quinidine (medicine for irregular heartbeat)
  • ephedrine (medicine for breathing problems)
This list does not include all medicines that may interact with Sodium bicarbonate.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on sodium bicarbonate - oral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2021 MIMS. All rights reserved. Powered by
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