• To make sure Botox is safe for you, tell your doctor if you have: amyotrophic lateral sclerosis (ALS, or “Lou Gehrig’s disease”); myasthenia gravis; Lambert-Eaton syndrome; a breathing disorder such as asthma or emphysema; problems with swallowing; facial muscle weakness (droopy eyelids, weak forehead, trouble raising your eyebrows); a change in the normal appearance of your face; bleeding problems; heart disease; if you have had or will have surgery (especially on your face); if you have recently used a blood thinner (warfarin, Coumadin, and others) or been treated with an injectable antibiotic; if you have ever received other botulinum toxin injections such as Dysport or Myobloc (especially in the last 4 months); or if you have ever had a side effect after receiving a botulinum toxin in the past. Botox is made from human plasma (part of the blood) which may contain viruses and other infectious agents. Donated plasma is tested and treated to reduce the risk of it containing infectious agents, but there is still a small possibility it could transmit disease. Talk with your doctor about the risks and benefits of using this medication