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Brand name: Protos

Protos contains the active ingredient strontium ranelate. It is only available with a doctor’s prescription.

Protos is used to treat severe osteoporosis, a condition that causes brittle bones. Protos should only be prescribed if other osteoporosis medicines are not suitable.

Every day, your body makes some new bone and destroys some old bone. Protos works by helping the body make more new bone. It also makes the body go more slowly when it destroys the old bone. This should help to make bone stronger.

Protos is available as a powder in individual-dose sachets. It should be mixed in water as described on the packet, and drunk straight away. It is best taken at least two hours before or two hours after food, or any medicines that contain calcium.

You should seek medical advice in relation to medicines and use only as directed by a healthcare professional. Always read the label. If symptoms persist see your healthcare professional. healthdirect medicines information is not intended for use in an emergency. If you are suffering an acute illness, overdose, or emergency condition, call triple zero (000) and ask for an ambulance.

Reasonable care has been taken to provide accurate information at the time of creation. This information is not intended to substitute medical advice, diagnosis or treatment and should not be exclusively relied on to manage or diagnose a medical condition. Please refer to our terms and conditions.

Active ingredient in this medicine: strontium

Information for medicine and pack size:
Protos 2 g granules, 28 sachets

Consumer Medicine Information leaflet:

This leaflet may also be found inside the medicine package. It contains information on side effects, age restrictions and other useful data.

Read leaflet

What this medicine is for

Treatment of severe (established) osteoporosis: ? in postmenopausal women at high risk of fracture to reduce the risk of fracture. ? in men at increased risk of fracture PROTOS should only be used when other medications for the treatment for osteoporosis are considered unsuitable (due to contraindications or intolerance).

Table of characteristics
Table of characteristics
Active ingredient
Visual appearance Yellowish-white to pale yellow powder.
Dosage Form Granules
Route of administration Oral
Medicine schedule
28 Sachets: Prescription Only Medicine, or Prescription Animal Remedy
7 Sachets: Prescription Only Medicine, or Prescription Animal Remedy

There is one type of pack available.

Pack type 1
Pack type 1
Type Sachet
Storage temperature Store below 30 degrees Celsius
Storage conditions No information available
Life time 3 Years
We were unable to verify that this medicine is available on the PBS (Pharmaceutical Benefits Scheme). Please consult your pharmacist if you need further information

The PBS provides a list of government subsidised medicines available to be dispensed to patients. Further information can be found on the Pharmaceutical Benefits Scheme website.

Go to PBS site

Is this medication banned in sport?

Check if you can use your medicine whilst playing sport. Search the Australian Sports Anti-Doping Authority (ASADA) database that provides information about the prohibited status of specific medications and/or the active ingredient based on the current World Anti-Doping Agency (WADA) Prohibited List.

Go to ASADA site

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What you need to know about Osteoporosis

1.2 million Australians are affected by osteoporosis, which means that their bones are fragile and at risk of fracture. A further 6.3 million people have low bone density (osteopenia), a possible precursor to osteoporosis. However, as many as 4 out of 5 people with osteoporosis don’t know that they have it and therefore don’t know that they are at risk of fracturing a bone. This is because osteoporosis is a ‘silent’ disease without obvious symptoms.

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