Great question! The philosophy is not to use anything that has an effect on blood coagulation - affecting bleeding during surgery and bruising after surgery. The most important of these is aspirin, and since the effect of even one baby aspirin lasts 9-13 days in our system, it is prudent to not take any aspirin for two weeks before a procedure (even Botox and fillers). Others to avoid are fish oil, vitamin E, gingko and garlic pills, omega 3, and anything that you don't know the ingredients of. I ask patients to refrain from taking these for one week before surgery. Vitamin C is fine, as is D. This is some evidence that bromelain and arnica montana may decrease bruising so these may be helpful around the time of surgery. Cheers,Brad Remington, MD