Although generally safe, botulinum toxin side effects and complications can include:

  • Bruising and pain at the injection site.
  • Flu-like symptoms.
  • Headache.
  • Nausea.
  • Redness.
  • Temporary facial weakness or drooping

Botulinum toxins like Botox temporarily block nerve signals to muscles. As a result, injected muscles can’t contract (tense). They become weak or paralyzed. These effects can last for several months

The most commonly reported events were pain (9.3%), swelling (6.4%), and eyelid/brow ptosis (6.1%). Serious outcomes occurred in 13.5% of patients.


 long-term effects from Botox

  • difficulty swallowing.
  • drooping eyelid.
  • neck weakness.
  • nausea.
  • vomiting.
  • blurred vision.
  • general or marked weakness.
  • difficulty chewing