As the other panel members have indicated, most will start with a minimum of 50 units of Botox per underarm for a total of 100 units per treatment. Our patients have found value with this treatment especially when done before a special event (ex: wedding) or for hot, humid seasons. TIP: We offer a discount on the cost of the product for these treatments since a patient is using an entire vial for one treatment. We would encourage you to ask for the same. Please see the below link for more information on hyperhidrosis for underarm sweating.
I will start off with 50 units, and sometimes go higher depending on the response. I have replaced Botox with the PitStop procedure for permanently reducing underarm sweating. As a one-time treatment it works better and is less expensive.