Acetaminophen and meloxicam inhibit platelet aggregation and coagulation in blood samples from humans.
Martini AK, Rodriguez CM, Cap AP, Martini WZ, Dubick MA. Acetaminophen and meloxicam inhibit platelet aggregation and coagulation in blood samples from humans. Blood Coagul Fibrinolysis. 2014 Dec; 25(8):831-7.