Botox® Treatments can be used for the medical treatment of headaches, Parkinson’s disease, blepharospasm or hemifacial spasms. Botox, the brand name of a neurotoxin, relaxes muscles by blocking the neurotransmitter that causes muscles to contract. Botox treatments involve injecting the prescription medicine into the muscles. Results begin to appear in three to five days and within two weeks, maximum results are achieved. Repeat treatments are usually needed at three-month intervals.