Bring a pair of gym shorts with you on the day of your appointment. Try to avoid alcohol, vitamin E, fish oil, aspirin, and NSAIDs (Ibuprofen, Motrin, and Advil) 72 hours prior to sclerotherapy. This is only intended to reduce the risk of bruising. These blood thinners will not reduce the effectiveness of the treatment or place you at risk for more severe side effects. You may still have your treatment performed even if you are taking these. Be prepared to see minor bruising in treated areas as well as dark pigmentation that can last weeks to months.