as Herbal tea
Prepare a herbal tea with peppermint or pennyroyal. Take two tablespoons of fresh leaves in one liter of boiling water. Infuse for 5 minutes, strain and drink up to three cups a day. You can also use dried mint leaves. Long-term use or too high quantity can be related to insomnia.
In case of headache apply some drops of peppermint in the temples and massage. Peppermint essential oils has also a decongestant action, for this reason, if you have a cold or stuffy nose apply 1-2 drops of essential oil in the region around your nose or prepare steam inhalation with 3-4 drops of peppermint essential oil.