Thank you for your question. Botox is a very effective treatment for hyperhidrosis (armpit, hands, feet, scalp/face, etc). The dosing is typically based on areas treated but can vary around 50 - 100 units per side depending on how large the treatment area. Duration also depends on dose and technique, but can vary from 3-6 months. For the armpit region, you may also want to consider miraDry as it provides a longer lasting relief and in the long run is more cost-effective.
I would look for a provider that offers both treatments so you can evaluate your options.
Botox injections are the only currently available product for sweaty palms, feet or scalp. Miradry is currently approved for permanent elimination of sweat and odor glands in the underarms but they may be coming out with a new applicator for other areas. I have had miraDry myself and it is truly a gift.
For armpit sweating, I would consider the Miradry procedure over Botox to help treat hyperhidrosis. Miradry is more cost-effective in the longterm.
You should be able to reach out to any board certified/eligible plastic surgeon. Most are familiar with botox treatments for underarm hyperhydrosis. Typically the treatment requires a total of 100 units of botox.
I hope this helps.
- Dr. Bryson Richards
Read a book about underarm hyperhidrosis before you see someone who specializes in treatment. Make sure you see someone who provides more than 1 treatment for this consition. Look for someone who has a center and who offers a whole cadre of treatment options - oral medication, topical products, Botox, suction curettage, subdermal laser ablation, miraDry, etc. READ the hyperhidrosis book on the link below.
I would contact either dermatologist's or plastic surgeon's offices. Request a provider who has experience in the treatment of hyperhidrosis with Botox or Dysport.