Peppermint [Mentha × piperita]

Internally, peppermint is promoted for irritable bowel syndrome (IBS) by reducing spasms in the digestive tract.

Its also used for other digestive problems, the common cold, sinus infections, and headaches. Peppermint oil is also promoted for topical use, applied to the temples for headaches or on the body for muscle aches, joint pain, and itching.

In aromatherapy, peppermint oil is used to treat coughs, colds, reduce pain, improve mental function, and relieve stress.