Ticagrelor

A P2Y12 antiplatelet for ACS: 180 mg loading, then 90 mg twice daily with aspirin.

P2Y12 antiplateletReviewed October 2026
On this page

Dose

180 mg loading dose, then 90 mg twice daily with low-dose aspirin (75 mg), usually for 12 months.

Cautions

  • Bleeding; avoid with previous intracranial bleed.
  • Breathlessness and slow pulse are common side effects.
  • Aspirin above 100 mg a day reduces its effect.
  • Interacts with strong CYP3A4 inhibitors (clarithromycin).

Frequently asked questions

Why does ticagrelor cause breathlessness?

It is a known side effect, usually mild and settling, but significant breathlessness needs review.

Used in these guides

Sources

  1. Drugs.com: Ticagrelor dosage

Doses on this page are typical doses from the sources above. Always confirm with a current drug reference, the product leaflet and your hospital protocol, especially in children, pregnancy and kidney or liver disease.

For FCPS Part 1

Revising for FCPS Part 1? Ticagrelor is covered in our textbook chapter Anticoagulants and antiplatelets, with practice MCQs.