There are multiple interactions reported between these two agents.

Interaction Details

Dipyridamole is classified as belonging to the following category: Anticoagulant/Antiplatelet Drugs

Theoretically, green coffee may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Green coffee can contain caffeine. Caffeine is reported to have antiplatelet activity. Theoretically, caffeine in green coffee might increase the risk of bleeding when used concomitantly with these agents. However, this interaction has not been reported in humans. There is some evidence that caffeinated coffee might increase the fibrinolytic activity in blood.

Interaction Rating

Moderate

Likelihood of Occurrence

Unlikely

Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

References

  • Ali M, Afzal M. A potent inhibitor of thrombin stimulated platelet thromboxane formation from unprocessed tea. Prostaglandins Leukot Med 1987;27:9-13.
  • Ardlie NG, Glew G, Schultz BG, Schwartz CJ. Inhibition and reversal of platelet aggregation by methyl xanthines. Thromb Diath Haemorrh 1967;18:670-3.
  • Samarrae WA, Truswell AS. Short-term effect of coffee on blood fibrinolytic activity in healthy adults. Atherosclerosis 1977;26:255-60.

Interaction Details

Dipyridamole is classified as belonging to the following category: Dipyridamole (Persantine)

Theoretically, green coffee might decrease the vasodilatory effects of dipyridamole and interfere with its use prior to stress testing.
Green coffee can contain caffeine. Caffeine is a methylxanthine that may inhibit dipyridamole-induced vasodilation. It is recommended that methylxanthines such as caffeine, as well as methylxanthine-containing products such as green coffee, be stopped 24 hours prior to pharmacological stress tests. Methylxanthines appear more likely to interfere with dipyridamole (Persantine) than adenosine-induced stress testing.

Interaction Rating

Moderate

Likelihood of Occurrence

Probable

Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.

References

  • Underwood DA. Which medications should be held before a pharmacologic or exercise stress test? Cleve Clin J Med 2002;69:449-50.
  • Aqel RA, Zoghbi GJ, Trimm JR, et al. Effect of caffeine administered intravenously on intracoronary-administered adenosine-induced coronary hemodynamics in patients with coronary artery disease. Am J Cardiol 2004;93:343-6.
  • Zheng XM, Williams RC. Serum caffeine levels after 24-hour abstention: clinical implications on dipyridamole (201)Tl myocardial perfusion imaging. J Nucl Med Technol 2002;30:123-7.
  • Smits P, Straatman C, Pijpers E, Thien T. Dose-dependent inhibition of the hemodynamic response to dipyridamole by caffeine. Clin Pharmacol Ther 1991;50:529-37.
  • Banko, L. T., Haq, S. A., Rainaldi, D. A., Klem, I., Siegler, J., Fogel, J., Sacchi, T. J., and Heitner, J. F. Incidence of caffeine in serum of patients undergoing dipyridamole myocardial perfusion stress test by an intensive versus routine caffeine his
  • Smits, P., Corstens, F. H., Aengevaeren, W. R., Wackers, F. J., and Thien, T. False-negative dipyridamole-thallium-201 myocardial imaging after caffeine infusion. J Nucl.Med. 1991;32(8):1538-1541.

Green Coffee Overview

Green Coffee Green coffee refers to coffee beans that have not been roasted (unlike regular coffee, which is roasted). They are typically a pale green color and have a mild, slightly bitter flavor. One of the main differences between green coffee and regular coffee is the amount of chlorogenic acid they contain. Chlorogenic acid is a plant compound that is found in high levels in green coffee beans, but it is largely destroyed during the roasting process. As a result, green coffee has a higher concentration of chlorogenic acid than regular coffee. Green coffee is often consumed as a supplement in the form of capsules, tablets, or powders, and is purported to have a number of potential health benefits. Some research suggests that green coffee may help with weight loss, lower blood pressure, and improve blood sugar control, but more data is needed for more definitive conclusions.
See More Information Regarding Green Coffee

Dipyridamole Overview

  • Dipyridamole is used with other drugs to reduce the risk of blood clots after heart valve replacement. It works by preventing excessive blood clotting.

See More Information Regarding Dipyridamole

Green Coffee - More Interactions

Green Coffee interacts with 662 drugs

Interaction Rating Key

These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.

Major The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur.
Moderate Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur.
Minor Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction.
Unknown No interactions have been reported or no interaction data is currently available.

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Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Drug descriptions are provided by MedlinePlus.

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In addition to being a clinical pharmacist specializing in pharmacotherapy, Dr. Brian Staiger is a registered herbalist through the American Herbalist Guild. He has combined his passion for pharmacy practice with the study of medical ethnobotany to improve patient care. Feel free to reach out about any of your herbal or medication questions!

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