Botox Cosmetic, a form of botulinum toxin type A that's used to improve facial wrinkles and is often referred to as simply Botox, should be used only under a doctor's care. While Botox injections are relatively safe when given by an experienced doctor, side effects and complications can occur — including pain and bruising at the injection site and temporary muscle weakness. Although highly unlikely, the effect of the toxin can also spread to other parts of the body. In the event that something goes wrong, a doctor working in a medical office is better equipped to handle an emergency situation than is a doctor giving injections in a home setting.