Side effects and risks

Side effects and risks

Some people have a slight headache after treatment for several hours; it is safe to take paracetamol to relieve this. Very long lasting headaches have rarely been reported. A bruise at the site of injection is possible.

BOTOX® injections
Bruise from botulinum toxin injections

Injection into the palms can cause muscle weakness and result in temporary clumsiness.

The most common significant complication, which is rare, is "ptosis". This is a drooping of the eyelid caused by the botulinum toxin tracking into the eyelid muscle. It generally lasts just a few days, but more prolonged weakness is possible. Let your doctor know if this bothers you; iopidine or aproclonidine eye drops can be prescribed to lessen this effect.

BOTOX® injections BOTOX® injections