Mint is high in vitamins C and A along with essential minerals like iron, manganese, folate, and calcium. Traditionally and to this day, mint is used for a variety of ailments. Mint may help with digestive issues and stomach aches as well as helping to relieve sinus congestion. Peppermint essential oil is used in aromatherapy diffusers to help open up the respiratory system when you have the flu or a cold. Please note that peppermint oil should not be applied topically as the strong oil can irritate the skin. Mint is best used in diffusers, drank as a beverage, or used for cooking.