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Strontium ranelate oral


Granules for oral suspension containing strontium ranelate.

Drugs List

  • strontium ranelate 2g granules for oral suspension sugar-free
  • Therapeutic Indications


    Postmenopausal osteoporosis to reduce risk of vertebral & hip fractures
    Treatment of osteoporosis in men to prevent fractures



    2g once daily.


    Children under 18 years
    Prolonged immobilisation
    Cerebrovascular disorder
    History of venous thromboembolism
    Ischaemic heart disease
    Occlusive peripheral arterial disease
    Renal impairment - creatinine clearance below 30 ml/minute
    Thromboembolic disorder
    Uncontrolled hypertension

    Precautions and Warnings

    Patients over 80 years
    Predisposition to venous thromboembolism
    Risk factors for cardiovascular disorder
    Renal impairment

    Contains aspartame - caution in phenylketonuria
    Avoid calcium supplements within 2 hours of dose
    Calcium supplements may be required if risk of calcium/vitamin D deficiency
    Treatment to be initiated and supervised by a specialist
    Advise no food (especially calcium rich) for 2 hours pre- and post dose
    Never rechallenge treatment after a severe hypersensitivity reaction
    Monitor cardiac function before and every 6 to 12 months during therapy
    Monitor patients at risk for signs & symptoms of venous thromboembolism
    Monitor renal function in patients with renal impairment
    Advise patient to seek immediate medical advice if rash occurs
    Discontinue if any deterioration in cardiac status occurs
    Interferes with colorimetric determination of blood & urinary Calcium level
    Discontinue if persistent hypertension unresponsive to therapy occurs
    Discontinue if thromboembolism occurs
    Discontinue in the event of a prolonged period of immobilisation
    Discontinue permanently if severe skin reaction occurs

    Strontium ranelate treatment is associated with an increase in venous thromboembolism (VTE) including pulmonary embolism. When treating patients at risk of VTE, particular attention should be given to the possible signs and symptoms of VTE and adequate preventative measures taken. Discontinue if the patient is immobilised due to concurrent illness or surgery and do not resume until the patient is fully mobile.

    Since the risk of VTE is increased in the elderly, prescribers should re-evaluate the need for continued treatment with strontium ranelate in patients over 80 years of age.

    Severe (and sometimes fatal) hypersensitivity reactions, including drug rash with eosinophilia and systemic symptoms (DRESS), have been reported with the use of strontium ranelate. Time to onset is typically 3 to 6 weeks. It is recommended that strontium ranelate is permanently withdrawn at the first sign of severe hypersensitivity and corticosteroid therapy administered.

    Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) have also been reported. The highest risk of these syndromes is within the first weeks of treatment. Strontium ranelate should be discontinued immediately and permanently.

    A higher incidence of hypersensitivity, although still rare, has been shown to occur in patients of Asian origin.

    Pregnancy and Lactation


    Strontium ranelate is contraindicated in pregnancy.

    The manufacturer does not recommend using strontium ranelate during pregnancy and advises that treatment should be discontinued if strontium ranelate is inadvertently used during pregnancy.

    Schaefer (2015) advises that inadvertent exposure is not grounds for invasive diagnostics or interruption of pregnancy.

    Animal studies have also shown reversible bone effects in the offspring of rats and rabbits treated during pregnancy. No clinical data is available for exposed human pregnancy.

    Schaefer (2015) notes that experimental data on bone marrow cells indicate the possibility of clastogenic effects. Strontium ranelate is known to have an effect on capacitation in animals and humans, and on the activation of oocytes in rodents.


    Strontium ranelate is contraindicated in breastfeeding.

    The manufacturer does not recommend breastfeeding whilst taking strontium ranelate.

    It is suggested that strontium ranelate is excreted in breast milk and it should not be given to breastfeeding mothers.


    Ideally take at bedtime at least 2 hours after eating food. The absorption of strontium ranelate is reduced by food, milk, milk derivatives and calcium containing products.

    Advise patient to avoid calcium supplementation within 2 hours of dose.

    Advise patient that it is preferable to take antacids, if needed, at least 2 hours after dose.

    The granules in the sachet must first be dispersed in a minimum of 30ml of water (approximately one third of a standard glass) and the suspension drunk immediately.

    Patients should be advised to stop strontium ranelate therapy immediately and permanently if a rash occurs and to seek medical advice.

    Patients should be advised to discontinue treatment in the event of a prolonged period of immobilisation.

    Side Effects

    Abdominal pain
    Bone marrow failure
    Bone pain
    Bronchial hyperreactivity
    Creatine kinase increased
    Drug rash with eosinophilia and systemic symptoms (DRESS)
    Dry mouth
    Extremity pain
    Gastro-intestinal pain
    Gastroesophageal reflux
    Hypersensitivity reactions
    Impaired consciousness
    Increase in serum transaminases
    Memory loss
    Mouth ulcers
    Muscle spasm
    Musculoskeletal pain
    Myocardial infarction
    Peripheral oedema
    Pulmonary embolism
    Severe cutaneous skin eruptions
    Soft or liquid stools
    Stevens-Johnson syndrome
    Toxic epidermal necrolysis
    Venous thrombosis

    Effects on Laboratory Tests

    Strontium interferes with colorimetric methods for the determination of blood and urinary calcium concentrations. Therefore to assess blood and urinary calcium levels accurately either inductively coupled plasma atomic emission spectrometry or atomic absorption spectrometry should be used.


    It is strongly recommended that the UK National Poisons Information Service be consulted on cases of suspected or actual overdose where there is doubt over the degree of risk or about appropriate management.

    The following number will direct the caller to the relevant local centre (0844) 892 0111

    Information may be obtained if you have access to ToxBase the primary clinical toxicology database of the National Poisons Information Service. This is available via password on the internet ( ) or if this is unavailable at the backup site ( ).

    Further Information

    Last Full Review Date: January 2019

    Reference Sources

    Drugs During Pregnancy and Lactation: Treatment Options and Risk Assessment, 3rd edition (2015) ed. Schaefer, C., Peters, P. and Miller, R. Elsevier, London.

    Summary of Product Characteristics: Strontium ranelate Aristo 2g granules for oral suspension. January 2018.

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    Medscape UK | Univadis prescription drug monographs & interactions are based on FDB Multilex Content

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    FDB Disclaimer : FDB Multilex is intended for the use of healthcare professionals and is provided on the basis that the healthcare professionals will retain FULL and SOLE responsibility for deciding what treatment to prescribe or dispense for any particular patient or circumstance.