Phosphate Effervescent Tablets

Monobasic sodium phosphate

Consumer Medicine Information

What is in this leaflet

This leaflet answers some common questions about Phosphate Effervescent Tablets.

It does not contain all the available information. It does not take the place of talking to your doctor or pharmacist.

The information in this leaflet was last updated on the date listed on the final page.

Some more recent information on the medicine may be available.

You should ensure that you speak to your pharmacist or doctor to obtain the most up to date information on the medicine. Those updates may contain important information about the medicine and its use, of which you should be aware.

All medicines have risks and benefits. Your doctor has weighed the risks of you taking this medicine against the benefits they expect it will provide.

If you have any concerns about this medicine, ask your doctor or pharmacist.

Keep this leaflet with the medicine. You may need to read it again.

What Phosphate Effervescent Tablets are used for

Phosphate Effervescent Tablets provide extra phosphorous for people with low phosphorous levels in their blood (also known as hypophosphataemia), or with high calcium levels in their blood (hypercalcaemia) due to:

  • overactivity of the parathyroid glands (hyperparathyroidism);
  • cancer in the bone marrow (multiple myelomatosis); or
  • bone disease caused by the spread of cancers.

Your doctor may have put you on Phosphate Effervescent Tablets for another reason.

Ask your doctor if you have any questions about why this medicine has been prescribed for you.

Phosphate Effervescent Tablets are not addictive.

Before you take Phosphate Effervescent Tablets

When you must not take it

Do not take Phosphate Effervescent Tablets if you have an allergy to any of the ingredients listed at the end of this leaflet.

Some of the symptoms of an allergic reaction may include:

  • shortness of breath
  • wheezing or difficulty breathing
  • swelling of the face, lips, tongue or other parts of the body
  • rash
  • itching or hives on the skin.

Do not take this medicine after the expiry date printed on the pack or if the packaging is torn or shows signs of tampering. If it has expired or is damaged, return it to your pharmacist for disposal.

If you are not sure whether you should start taking Phosphate Effervescent Tablets, talk to your doctor or pharmacist.

Before you start to take it

Tell your doctor if you have allergies to any other medicines, foods, preservatives or dyes. Your doctor will want to know if you are prone to allergies.

If you experience an allergic reaction, stop using the medicine and inform your doctor or pharmacist immediately.

Tell your doctor if you have any of the following medical conditions:

  • kidney disease
  • congestive cardiac failure
  • pre-eclamptic toxaemia
  • hypertension
  • sodium restrictions in your diet

Your doctor may want to take special precautions if you have any of the above conditions.

Tell your doctor if you are pregnant, or are breast-feeding. Your doctor can discuss the risks and benefits involved in taking this medicine with you.

Taking other medicines

Tell your doctor if you are taking any antacid medications. Antacids may reduce the effectiveness of Phosphate Effervescent Tablets and could change the dose you will need to take.

Tell your doctor or pharmacist if you are taking any calcium, aluminium, magnesium or vitamin D supplements, or any other medicines. This includes any medicines that you buy without a prescription from your health food shop, pharmacy or supermarket.

If you are taking other medicines, you may need different amounts of your medicines, or you may need to take different medicines. Your doctor and pharmacist will be able to advise you about this.

If you have not told your doctor about any of these things, tell him/her before you start taking Phosphate Effervescent Tablets.

How to take Phosphate Effervescent Tablets

Follow all directions given to you by your doctor or pharmacist carefully. They may differ from the information contained in this leaflet.

If you do not understand the instructions on the label, ask your doctor or pharmacist for help.

How much to take

Follow your doctor's instructions on how much Phosphate Effervescent Tablets to take.

The number of tablets you need to take will depend on the reason that your doctor has asked you to take Phosphate Effervescent Tablets, and will also depend on your individual requirements.

If you are receiving it to reduce the calcium levels in your blood, you can take up to:

  • 6 tablets daily (adults) or
  • 3 tablets daily (children).

If you are taking it to increase your phosphate levels, you can take:

  • 4-6 tablets daily (adults) or
  • 2-3 tablets daily (children).

If you have kidney problems or are elderly, the dose may be reduced as directed by your doctor.

Do not change the dose yourself, without your doctor's advice, regardless of how well you may feel.

How to take it

Always dissolve the Phosphate Effervescent Tablets in one third to half a glass of water. The tablets will effervesce and dissolve to give a palatable orange flavoured solution.

Drink the solution as soon as the fizzing has stopped.

Never swallow the tablets whole.

When to take it

Take Phosphate Effervescent Tablets at the same time each day, as directed by your doctor. Taking your tablets at the same time each day will have the best effect. It will also help you remember when to take it.

How long to take it

Continue taking Phosphate Effervescent Tablets for as long as your doctor tells you.

It is important to keep taking your medicine even if you feel well.

Your doctor will check the amount of phosphorous in your body from time to time to make sure the medicine is working and will discuss with you how long your treatment should continue.

If you forget to take it

If you miss a dose and then remember, take the missed dose right away. Then continue with your regular schedule.

Do not take a double dose to make up for the dose that you missed. This may increase the chance of you getting an unwanted side effect.

If you are not sure what to do, ask your doctor or pharmacist.

If you have trouble remembering to take your medicine, ask your pharmacist for some hints.

If you take too much (overdose)

Immediately telephone the Poisons Information Centre (telephone 13 11 26) or your doctor for advice, or go to Accident and Emergency at the nearest hospital, if you think that you or anyone else may have taken too many Phosphate Effervescent Tablets.

Do this even if there are no signs of discomfort or poisoning. Keep the telephone numbers for these places handy.

While you are taking Phosphate Effervescent Tablets

Things you must do

Keep all of your doctor's appointments so that your progress can be checked. Your doctor may do some tests from time to time to check the phosphate levels in your blood and to make sure the medicine is working.

If you become pregnant while taking this medicine, tell your doctor immediately. Your doctor can discuss with you the risks of taking it while you are pregnant.

If you are going to have surgery, tell the surgeon or anaesthetist that you are taking this medicine. It may affect other medicines used during surgery.

If you are going to have any diagnostic tests, tell your doctor that you are taking this medicine. It may interfere with the results of some tests.

If you are going to start on any new medicine, remind your doctor and pharmacist that you are taking this medicine.

Tell any other doctors, dentists, and pharmacists who treat you that you are taking Phosphate Effervescent Tablets.

Things you must not do

Do not give this medicine to anyone else, even if their condition seems similar to yours.

Do not use it to treat any other complaints unless your doctor tells you to.

Do not stop taking Phosphate Effervescent Tablets or lower the dosage without checking with your doctor. If you stop your tablets suddenly, your condition may worsen or you may have unwanted side effects.

Your doctor will advise you how to stop taking this medicine.

Things to be careful of

Do not dissolve Phosphate Effervescent Tablets in warm or hot water.

Always dissolve these tablets in drinking water at room temperature before taking.

Never swallow the tablets whole.

Make sure that the lid on the tube is firmly closed at all times.

Side effects

Tell your doctor or pharmacist as soon as possible if you do not feel well while you are taking Phosphate Effervescent Tablets, even if you think it is not connected with the medicine.

All medicines can have side effects. Sometimes they are serious, but most of the time they are not. You may need medical treatment if you get some of the side effects.

Ask your doctor or pharmacist to answer any questions you may have.

Do not be alarmed by the following lists of side effects. You may not experience any of them.

  • stomach upsets
  • nausea
  • abdominal pain
  • vomiting

Some side effects could be serious:

  • very little urination/no urine
  • diarrhoea
  • electrolyte disturbance

If you experience any of them, tell your doctor immediately.

Tell your doctor or pharmacist if you notice anything that is making you feel unwell.

Some people may have other side effects not yet known or mentioned in this leaflet. Some of these side effects can only be found when your doctor does tests from time to time to check your progress.

After using Phosphate Effervescent Tablets


Keep your medicine in the original container until it is time to take your tablets.

Store Phosphate Effervescent Tablets in a cool, dry place where the temperature stays below 25°C.

Do not store this medicine or any other medicine in the bathroom or near a sink. Do not leave the tablets in the car or on window sills. Heat and dampness can destroy some medicines. Phosphate Effervescent Tablets will keep best if they are stored in a cool and dry place.

Keep the medicine in a safe place where children cannot reach it. A locked cupboard at least one-and-a- half metres above the ground is a good place to store medicines.


If your doctor tells you to stop taking Phosphate Effervescent Tablets or if the expiry date has passed, return any tablets to the pharmacist.

Product description

What it looks like

Phosphate Effervescent Tablets are large, white, flat, circular tablets with a slightly rough surface.

They come in cartons of 100 tablets.

Each carton contains 5 tubes of 20 tablets.


Phosphate Effervescent Tablets contain elemental phosphorous 500 mg, present as monobasic sodium phosphate.

They also contain:

  • sodium bicarbonate (E500)
  • potassium bicarbonate (E501)
  • macrogol 4000
  • sucrose
  • citric acid
  • orange 52570 TP0551
  • sodium saccharin (E594).

This medicine does not contain lactose, gluten, tartrazine or any other azo dyes.


Phosphate Effervescent Tablets are supplied in Australia by:

Phebra Pty Ltd
19 Orion Road, Lane Cove West,
NSW 2066, Australia.
Telephone: 1800 720 020

Phosphate Effervescent Tablets Phebra product code TAB010

This leaflet was prepared in January 2017.

Phebra and the Phi symbol are trademarks of Phebra Pty Ltd, 19 Orion Road, Lane Cove West, NSW 2066, Australia.

Published by MIMS June 2019