For Botox/Dysport appointments, avoiding alcohol or blood thinners for at least 48 hours before treatment is best to decrease the bruising risk. This includes aspirin, ibuprofen, flax/fish oil, oral vitamin E, and prescription blood thinners. Drinking a lot of water. Arnica Montana can be used pre-and post-treatment to minimize swelling and bruising. This comes in a topical gel or oral pellets and can be bought at health food stores or Amazon.