Critical
ritonavir × Ticagrelor
HIV protease inhibitor / pharmacokinetic booster×Reversible P2Y12 receptor inhibitor
Mechanism
Strongest CYP3A4 inhibitor. Ticagrelor rises 10+ fold.
Symptoms
Severe bleeding.
Management
Combination contraindicated.
Check the full regimen, not just this pair
Opens the checker with these two drugs prefilled. Add the rest of the regimen and recompute additive risks.