Overview: Transdermal estradiol is available as a patch, gel, or spray that is applied to the skin to increase estrogen levels. It is used after menopause to prevent osteoporosis or to reduce vaginal ...

An iodine deficiency causes your thyroid not to produce enough thyroid hormone, which can cause other health conditions. Treatment typically involves increasing your iodine intake. Iodine deficiency ...

Overview: Transdermal lidocaine is commonly used to relieve pain, including certain kinds of nerve pain. It works by temporarily blocking nerve signals that cause you to feel pain. The most common ...