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Dipyridamole oral modified release

Updated 2 Feb 2023 | Dipyridamole


Modified release oral formulation of dipyridamole

Drugs List

  • ATTIA 200mg modified release capsules
  • dipyridamole 200mg modified release capsules
  • Therapeutic Indications


    Ischemic stroke: Secondary prevention (with/without aspirin)
    Thromboembolism+prosthetic heart valve: prophylaxis (+oral anticoagulant)
    Transient ischemic attacks: Secondary prevention (with/without aspirin)



    The recommended dose is 200 mg twice daily.


    The recommended dose is 200 mg twice daily.

    Additional Dosage Information

    Modified release dipyridamole alone is recommended as an option to prevent occlusive vascular events for people who have had an ischaemic stroke only if aspirin and clopidogrel are contraindicated or not tolerated or for people who have had a transient ischaemic attack only if aspirin is contraindicated or not tolerated.

    Modified release dipyridamole in combination with aspirin is recommended as an option to prevent occlusive vascular events for people who have had a transient ischaemic attack or for people who have had an ischaemic stroke only if clopidogrel is contraindicated or not tolerated.

    People currently receiving modified release dipyridamole either with or without aspirin outside the situations mentioned above should have the option to continue treatment until they and their clinicians consider it appropriate to stop.


    Children under 18 years

    Precautions and Warnings

    Aortic stenosis
    Cardiac failure
    Haemodynamic instability
    Left ventricular outflow obstruction
    Myasthenia gravis
    Recent myocardial infarction
    Severe ischaemic heart disease
    Unstable angina

    Not all available brands are licensed for all indications
    Discontinue 24 hours prior to stress testing with IV dipyridamole for CAD
    The release profile of some brands may be affected by alcohol

    Pregnancy and Lactation


    Use dipyridamole with caution in pregnancy.

    There is inadequate evidence of safety in human pregnancy, but dipyridamole has been used for many years without apparent ill-consequence. Animal studies have shown no hazard.

    Reproduction studies have been conducted in mice, rats and rabbits at doses up to 1.3, 20 and 1.6 times the maximum recommended daily human dose based on BSA, respectively. No evidence of foetal harm was found in these studies.

    The use of all medication in pregnancy should be avoided whenever possible; particularly in the first trimester. Non-drug treatments should also be considered. When essential, a medication with the best safety record over time should be chosen, employing the lowest effective dose for the shortest possible time. Polypharmacy should be avoided. Teratogens taken in the pre-embryonic period, often quoted as lasting until 14 to 17 days post-conception, are believed to have an all-or-nothing effect. Where drugs have a short half-life, and when the date of conception is certain, this may allow women to be reassured where drug exposure has occurred within this time frame. Further advice may be available from the UK National Teratology Information Service (NTIS) and through ToxBase, available via password on the internet ( ) or if this is unavailable at the backup site ( ).


    Use dipyridamole with caution in breastfeeding.

    Dipyridamole is excreted in breast milk at levels approximately 6% of the plasma concentration. There is not enough information to accurately establish the milk: plasma ratio. The pharmacokinetics of dipyridamole are such that only small amounts taken orally would be expected to pass into breast milk. Oral absorption is poor (27 to 66% due to first pass effect) and protein binding is high (90 to 99%). The effect of this on the nursing infant is unknown.

    Neonates, infants born prematurely, those with low birth weight, those with an unstable gastrointestinal function or who have serious illnesses may require special consideration. For any infant, if a drug is prescribed to the nursing mother, it should be at the lowest practical dose and for the shortest time. When drug administration is unavoidable and breastfeeding is to continue, minimisation of exposure of the infant to the drug may sometimes be achieved by timing the maternal doses to just after a feeding episode. Infants exposed to drugs via breast milk should be monitored for unusual signs or symptoms. Interactions between the drug received by the infant from the mother's milk and medication prescribed for the infant should also be considered, for example, when the drug given to the infant may prevent metabolism of the drug received via breast milk.
    Specialist advice is available from the UK Drugs in Lactation Advisory Service at

    Side Effects

    Aggravation of angina
    Angina pectoris
    Gastro-intestinal disturbances
    Hot flushes
    Hypersensitivity reactions
    Increased bleeding (during and after surgery)
    Severe bronchospasm
    Worsening of coronary heart disease


    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: October 2014

    Reference Sources

    Drugs During Pregnancy and Lactation: Treatment Options and Risk Assessment, 2nd edition (2007) ed. Schaefer, C., Peters, P. and Miller, R. Elsevier, London.

    Drugs in Pregnancy and Lactation: A Reference Guide to Fetal and Neonatal Risk, 9th edition (2011) ed. Briggs, G., Freeman, R. and Yaffe, S. Lippincott Williams & Wilkins, Philadelphia.

    Joint Formulary Committee. British National Formulary(online) London: BMJ Group and Pharmaceutical Press Accessed on 3 October 2014.

    Martindale: The Complete Drug Reference, 37th edition (2011) ed. Sweetman, S. Pharmaceutical Press, London.

    Summary of Product Characteristics: Attia 200mg Modified-release capsules. Dr. Reddy's laboratories (UK) Ltd. Revised June 2014.

    Summary of Product Characteristics: Ofcram PR 200mg prolonged release capsules, hard. Focus Pharmaceuticals Ltd. Revised October 2013.

    Summary of Product Characteristics: Persantin Retard 200mg. Boehringer Ingelheim Ltd. Revised June 2014.

    Summary of Product Characteristics: Trolactin 200mg Prolonged-release Hard Capsules. Actavis UK Ltd. Revised October 2016.

    National Institute for Health and Care excellence (NICE) technology appraisal guidance 210: Clopidogrel and modified-release dipyridamole for the prevention of occlusive vascular events (Review of TA90). Issue date December 2010
    Available at:
    Last accessed: 3 October, 2014

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