Ginseng

Ginseng (Panax ginseng) has antiplatelet activity through thromboxane inhibition and platelet-activating factor 1).

Some authors also advocate cautious use of ginger and vitamin E when planning a surgery, but the exact antiplatelet mechanism is unclear 2).

1)
Teng CM, Kuo SC, Ko FN, et al. Antiplatelet actions of panaxynol and ginsenosides isolated from gin- seng. Biochim Biophys Acta. 1989; 990:315–320
2)
Stanger MJ, Thompson LA, Young AJ, et al. Anticoagulant activity of select dietary supplements. Nutr Rev. 2012; 70:107–117