Again, premedicating with arnica and/or bromelain tablets can be helpful. Avoid aspiring containing products (even baby aspirin) for 3 to 4 weeks, and anti-inflammatory medications for 2 weeks pre-procedure (ex:ibuprofen/Motrin, Naprosyn/Aleve, naproxen/Anaprox).   You can still have these procedures if you are on blood thinners, but your likelihood of bruising will be increased.   Avoid nutritional supplements which increase bruising for at least 1 week (ex: fish oil, vitamin E, garlic, ginger, gingko, ginseng and turmeric)