How Much Botox Units is Needed to Treat Underarm Hyperhidrosis?

Doctor Answers 14

MiraDry for underarm sweating

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Botox for hyperhidrosis (underarm sweating) typically requires about 50 units per underarm (100 units total).  Botox for underarm sweating is not a cure.  It wears off after several months so you need to keep coming back for more injections.  You should consider doing MiraDry for underarm sweating.  It permanently reduces underarm sweating after one or two treatments.  

It Takes a Lot of Botox for Hyperhydrosis … But It Works Well

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It takes about 50 units of Botox per arm to correct the medical condition known as hyperhidrosis, or excessive sweating. Botox is not a permanent cure. Results only last about three to four months and then the procedure must be repeated. However, my patients who have had Botox to control this embarrassing condition have been very happy and continue to be treated. I hope this helps.

100 units for underarm sweating- now BOTOX covered under Australia's Medicare.

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See video below for reference. This treatment is now covered if performed by a Specialist Dermatologist. You are out of pocket around $370 USD for treatment. 

By law we have to use BOTOX not Dysport, and you get 100 units. Australia's Medicare scheme allows you to have 3 treatments, spaced 4 months apart per year. 

All the best. 

Dr Davin Lim
BRISBANE, Australia. 

Underarm sweating (hyperhidrosis)

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On average, our center uses 50 units of botox per side or 100 units total for most patients. The actual procedure takes less than 10 minutes. However, we advise our patients to come in earlier for prepping of the area to be injected. 

Kyle S. Choe, MD
Virginia Beach Facial Plastic Surgeon
4.6 out of 5 stars 42 reviews

Botox for Hyperhydrosis

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I like 50 units per arm pit.  One of my nurses or my PA performs the procedure.  It's a little time consuming, we book an hour for treatment which allows for time to numb the area with Betacaine, Lidocaine and Tetracaine (BLT) cream.  Nearly all patients continue to return for treatments, which tells me it works.  I am hopeful that the Botox cream proves effective, which would be nice, especially for hand and foot sweating.  Those areas are painful to treat.

Ritu Chopra, MD
Beverly Hills Plastic Surgeon
5.0 out of 5 stars 34 reviews

How much Botox needed for armpits

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Although we have treated many people with 50 units per armpit, we do find better and more consistent results with longer duration (and no difference in side effects) when we use 100 units per armpit, so presuming insurance can cover the cost, we & our patients prefer the higher dose.  Dr. Benjamin Barankin, Toronto Dermatology Centre.

Benjamin Barankin, MD, FRCPC
Toronto Dermatologic Surgeon

Botox for underarm Hyperhidrosis

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This is a very effective procedure.

If the hyperhidrosis is severe and  it is refractory to other treatments, often some insurance plans will provide coverage.

We inject 50 units in each armpit, for a total dose of 100 units.

Eugene Mandrea, MD
Chicago Dermatologist
4.6 out of 5 stars 5 reviews

Botox for underarm hyperhidrosis

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Most patients have gone through dry-sol and other treatments.  We have the patient come in for an evaluation.  We will usually place a topical numbing cream and then treat with 50 units of Botox in each armpit.  Some of these patients are the happiest in the practice.  I had one patient state that this is the first time in years that he had worn a powder blue dress shirt.  It typically lasts about 6 months.  We have had others that lasted considerably longer.

Jeffrey J. Roth, MD, FACS
Las Vegas Plastic Surgeon
4.6 out of 5 stars 17 reviews

Dosing for Hyperhidrosis/Underarm Sweating

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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.


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.


Harold J. Kaplan, MD
Los Angeles Facial Plastic Surgeon
4.4 out of 5 stars 7 reviews

Botox for hyperhidrosis

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The number of units are 100 units (50 each side) on average. Make sure you doctor is an experienced physician. There are nerves and muscles in the area that can become inadvertantly involved if proper technique is not used. Good luck. This procedure is very effective!

Ashkan Ghavami, MD
Beverly Hills Plastic Surgeon
4.1 out of 5 stars 105 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.