What Are the Disadvantages of Botulinum Toxin?
The disadvantages of botulinum toxin include: • The benefit of botulinum toxin is limited to the injected muscles. Therefore, botulinum toxin may not be a good choice of treatment when many muscles are involved or when the spastic muscles are large. • The effect of the injections is temporary. Therefore, injections must be repeated over time to maintain the beneficial effects. Injections are not repeated more often than every 3 months to minimize the risk of developing antibodies to the botulinum toxin (see below).
