To prevent excessive armpit sweating consider an antiperspirant, which is different from deodorant, or avoid triggers such as alcohol, heat, caffeine or spicy foods, according to MedlinePlus. Medication, Botox or iontophoresis may also help.
Strong antiperspirants plug sweat ducts, and those that contain 10 to 20 percent aluminum chloride hexahydrate are usually the first step to try, explains MedlinePlus. Some people may require a higher dosage, which only comes in prescription form. When using these, dry the armpit, and use them before bed for up to five days, and then one or two times a week.
There are medications that may help to treat excessive sweating, but these may have side effects, states MedlinePlus. It is also possible that iontophoresis may help though this procedure is best for sweating in the feet or hands. This procedure uses water and a low-level electrical current. Botox treatments can also be effective for underarm sweating. These injections temporarily block the nerves that cause sweating, but there are possible side effects including flu-like symptoms and pain near the injection site.
In severe cases, endoscopic thoracic sympathectomy or underarm surgery may help, claims MedlinePlus. Endoscopic thoracic sympathectomy is a procedure where the doctor cuts the nerve that promotes sweating, and though it may work for underarm sweating, it is best for foot or hand sweating. Several surgical procedures are available that target armpit sweating.