Talk to your doctor about BOTOX® Cosmetic and whether it’s right for you. There are risks with this product - the effects of BOTOX® Cosmetic may spread hours to weeks after injection causing serious symptoms. Alert your doctor right away as difficulty swallowing, speaking, breathing, eye problems or muscle weakness can be a sign of a life-threatening condition. Patients with these conditions before injection are at the highest risk. Side effects may include allergic reactions, neck and injection-site pain, fatigue and headache. Allergic reactions can include rash, welts, asthma symptoms, and dizziness. Don’t receive BOTOX® Cosmetic if there’s a skin infection. Tell your doctor your medical history, muscle or nerve conditions (including ALS/Lou Gehrig's disease, myasthenia gravis, or Lambert-Eaton syndrome), and medications, including botulinum toxins, as these may increase the risk of serious side effects.