Probably the most widely studied brand of botulinum toxin injections, Botox is used to treat many ailments. Many know it as a cosmetic treatment, but in 2004, the FDA approved Botox to treat hyperhidrosis or heavy sweating of the underarms. The sweating is so much that affected individuals cannot get relief even after using antiperspirants. So how does Botox help control heavy sweating? Are there any side effects? Here are six things to know.

1. How does it work?
Since it’s a natural and purified protein, Botox can block the chemical that activates the body’s sweat glands. Usually, the sweat glands are activated only when the body’s temperature rises and needs to cool down. However, in hyperhidrosis, the nerves that activate these glands are sensitive or overreactive. Botox intervenes and deactivates the nerves near the sweat glands to prevent sweating.

2. Can it be used for sweating in other regions?
Although research has shown that treating heavy sweating in the arms, neck, head, and face with Botox is safe, it’s approved only for underarm sweating. When used to treat heavy sweating in the underarm region, Botox has proven to be 80-85% effective. Another area where it has had successful results is sweaty palms, where it has been able to treat 80-90% of cases.

3. How is it administered?
Botox has shown the best results when administered by an experienced practitioner. The procedure is pretty short and requires just a single visit to the doctor’s clinic. An injection is made at the site using a fine needle, sometimes followed by multiple shots around the affected area. A numbing agent may be given to prevent pain.

4. How long do the effects last?
After administering the injection, it can take up to a week for heavy sweating to subside completely. If the individual has underarm sweating, effects (in this case, dryness) can last anywhere between four to 14 months. Post that, additional doses might be required.

5. Are there any side effects?
Research has been conducted to verify the safety of Botox injections, and most individuals face little to no side effects. One can resume their routine activities immediately after the injection has been given. In rare cases, patients experience flu-like symptoms, headaches, or pain at the injection site and possible bruising.

6. Is the treatment costly?
While Botox is a highly effective treatment for heavy sweating, one might need to consider the cost involved. The injections are expensive, and insurance may or may not cover the treatment depending on the person’s location and other circumstances. The price for heavy sweating in the underarms is around $1,000. Individuals should, therefore, talk to their insurance partner or doctor for the best possible solution.