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(prasugrel) Tablets



  • Effient can cause significant, sometimes fatal, bleeding [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS].
  • Do not use Effient in patients with active pathological bleeding or a history of transient ischemic attack or stroke [see CONTRAINDICATIONS].
  • In patients ≥ 75 years of age, Effient is generally not recommended, because of the increased risk of fatal and intracranial bleeding and uncertain benefit, except in high-risk situations (patients with diabetes or a history of prior MI) where its effect appears to be greater and its use may be considered [see Use in Specific Populations].
  • Do not start Effient in patients likely to undergo urgent coronary artery bypass graft surgery (CABG). When possible, discontinue Effient at least 7 days prior to any surgery [see WARNINGS AND PRECAUTIONS].
  • Additional risk factors for bleeding include: body weight < 60 kg; propensity to bleed; concomitant use of medications that increase the risk of bleeding (e.g., warfarin, heparin, fibrinolytic therapy, chronic use of non-steroidal anti-inflammatory drugs [NSAIDs]) [see WARNINGS AND PRECAUTIONS].
  • Suspect bleeding in any patient who is hypotensive and has recently undergone coronary angiography, percutaneous coronary intervention (PCI), CABG, or other surgical procedures in the setting of Effient [see WARNINGS AND PRECAUTIONS].
  • If possible, manage bleeding without discontinuing Effient. Discontinuing Effient, particularly in the first few weeks after acute coronary syndrome, increases the risk of subsequent cardiovascular events [see WARNINGS AND PRECAUTIONS].


Effient contains prasugrel, a thienopyridine class inhibitor of platelet activation and aggregation mediated by the P2Y12 ADP receptor. Effient is formulated as the hydrochloride salt, a racemate, which is chemically designated as 5[(1RS)-2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl acetate hydrochloride. Prasugrel hydrochloride has the empirical formula C20H20FNO3S•HCl representing a molecular weight of 409.90. chemica structure of presugrel hydrochloride is:

EFFIENT (prasugrel) Structural Formula Illustration

Prasugrel hydrochloride is a white to practically white solid. It is soluble at pH 2, slightly soluble at pH 3 to 4, and practically insoluble at pH 6 to 7.5. It also dissolves freely in methanol and is slightly soluble in 1-and 2-propanol and acetone. It is practically insoluble in diethyl ether and ethyl acetate.

Effient is available for oral administration as 5-mg or 10-mg elongated hexagonal, film-coated, non-scored tablets, debossed on each side. Each yellow 5-mg tablet is manufactured with 5.49 mg prasugrel hydrochloride, equivalent to 5mg prasugrel and each beige 10-mg tablet with 10.98 mg prasugrel hydrochloride, equivalent to 10-mg of prasugrel.

Other ingredients include mannitol, hypromellose, low-substituted hydroxypropyl cellulose, microcrystalline cellulose, sucrose stearate, and glyceryl behenate. The color coatings contain lactose, hypromellose, titanium dioxide, triacetin, iron oxide yellow, and iron oxide red (only in Effient 10-mg tablet).

What are the possible side effects of prasugrel (Effient)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have any of these serious side effects:

  • unusual bleeding such as nosebleeds, bleeding gums, or any bleeding that will not stop;
  • pale skin, fever, easy bruising, purple or red spots under your skin;
  • jaundice (yellowing of the skin or eyes);
  • unexpected vaginal bleeding;
  • feeling very weak or dizzy;
  • blood in your urine or stools, black or tarry...

Read All Potential Side Effects and See Pictures of Effient »

Last reviewed on RxList: 7/22/2016
This monograph has been modified to include the generic and brand name in many instances.

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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