Heparin Interactions with Food and HerbsVitamin K Rich Foods: Green leafy vegetables like broccoli, cabbage, coriander, collard greens, spinach, kale, black licorice, turnip greens, Brussels sprouts and avocados which are rich in vitamin K decrease the ability of heparin to prevent blood clotting. Intake of soy foods may affect heparin activity.
Tobacco Products: Smoking may decrease the effectiveness of heparin. Usage of tobacco products while taking heparin will increase the risk of blood clots.
Herbs: Do not take garlic, ginger, ginseng, ginkgo, cannabis, saw palmetto, green tea, papaya, mango or onion with heparin as the combination could alter the risk of bleeding with heparin.