Ouch! Reading testimonials online, I found that some people experienced sore underarms up to 5 weeks after the procedure.
Also, there are reported burns and bruises, something which worries me a little. I would guess that it's no worse than Botox, but I guess I can't be sure, huh? Treating one's sensitive body part to microwaves seems harsh.
Still, the general opinion is that miraDry is worth it. No pain, no gain, and at the moment this looks like the best way to cure sweaty armpits. I might do this soon, but I am hoping the price of the procedure will go down eventually. (Currently the average patients spend on a miraDry treatment is about $2500-3000 in the USA.)