Botox is a brand name for the medicines that use the different forms of botulinum toxin to weaken or paralyze certain muscles, or sometimes block certain nerves. Botox is produced by a bacterium known as Clostridium botulinum. If used in very large amounts, it can result in muscle paralysis called botulism, which is also related to the food poisoning. Primarily, the Botox injections were used to decrease the appearance of wrinkles on the face, but nowadays these are also used to treat some problems like cervical dystonia (repetitive neck spasms), hyperhidrosis (an excessive amount of sweating), problems related to crossed eye and overactive bladder. In some people with migraine problems, Botox injections may also be of great help. Botox was the first medicine to utilize various forms of botulinum toxin. Now a days, multiple new products like Myobloc, Dysport and Xeomin, utilizing the forms of botulinum toxin, have come into the market. All these products vary from each other, especially in dosage and hence, cannot be replaced with the one another.