Peppermint is used for flavoring in gum, mints, toothpaste, and some desserts and in cuisines. It is one of the oldest medicinal herbs, used in Greece, Rome, and Egypt. Menthol, used in many over-the-counter medications, is derived from peppermint. Less common names of this herb include: Mentha piperita, brandy mint, and lamb mint.

Peppermint is still used today. One study suggests that peppermint oil capsules may soothe irritable bowel syndrome by relaxing the gastrointestinal muscles. It has also been used for a variety of other ailments, such as menstrual cramps, toothache, and loss of appetite. Topically, it has been used for muscle aches and as an antiseptic.

Peppermint has a numbing and calming effect. Applying peppermint to the temples may ease a tension headache. Because menthol thins mucus, it is good for colds, and it can also break down gallstones. Against viruses, peppermint oil may be useful due to antiviral properties of the herb.

Peppermint comes in many forms:
Creams or ointments
Enteric-coated capsules
Peppermint spirit or tincture
Tea

Peppermint is relatively safe. However, people with gastroesophageal reflux disease (GERD) should avoid it because peppermint can allow stomach acids to flow up into the esophagus. Pregnant women should not use peppermint because of increased chance of miscarriage. In some patients, peppermint can cause rashes when taken in capsule form or applied topically to the skin.