Most of the public knows of Botox as a quick fix for wrinkles, and a mainstay moneymaker in the world of cosmetic treatment. But botulinum toxin (BTX) has also been used for several decades as an effective therapy for a number of chronic medical problems. In particular, regular injections are often helpful for treating certain central nervous system conditions related to involuntary muscle movement and pain.
For some time, using BTX on migraines was primarily viewed as an experimental treatment. However, in recent years, findings from a number of well-designed, placebo-controlled trials on BTX have shown it to be a highly effective tool for migraine management – often more effective than medications and with fewer side effects. In a fourweek follow up for one study, patients who received the BTX injections had 15 percent fewer days of headache compared with a placebo.
Disponível em: http://www.newsweek.com. Acesso em: set. 2022. Adptado.
In the sentence “often more effective than medications and with fewer side effects”, “more effective” and “fewer” are
