I don't know about the side effects being permanent but the link below has a list of known side effects and one link has a few reviews, which you may find useful.
- Botox Information for Consumers
- Botox Information for Healthcare Professionals (includes dosage details)
- Side Effects of Botox (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Posted 10 Aug 2011 • 42 answers
Posted 14 Jan 2013 • 1 answer
Posted 25 Sep 2015 • 2 answers
Posted 30 May 2016 • 1 answer
Posted 12 Sep 2016 • 1 answerFAQ by Drugs.com