Peppermint (Mujaaja)
Peppermint is a popular traditional remedy for a number of conditions. It is believed to have calming effects. and is used to treat flatulence (gas in the stomach), menstrual pains, diarrhoea, nausea, depression-related anxiety, muscle and nerve pain, common colds and indigestion, among others.

Menthol, the main chemical component of peppermint, is an effective decongestant. Decongestants shrink the swollen membranes in the nose, making it easier to breathe. Menthol is also an expectorant. Expectorants loosen and bring up mucus from the lungs. Expectorants help people with coughs.

Peppermint oil is widely used for calming skin irritation and itchiness, as well as reducing redness.
However, peppermint essential oil should always be diluted before topical use, or application to the skin.

Risks
Peppermint, like many other herbs, can interact with other herbs, supplements, or drugs. Anyone who already receives medication should talk to their doctor before using peppermint. Peppermint should not be used by young children. Applied to the face, it can cause life-threatening breathing problems