A cup of Brazilian mint tea has pain relieving qualities to match those of commercially available analgesics, a study suggests.
Hyptis crenata has been prescribed by Brazilian healers for millennia to treat ailments from headaches and stomach pain to fever and flu.
Working on mice, a Newcastle University team has proved scientifically that the ancient medicine men were right.
The study is published in the journal Acta Horticulturae.
In order to mimic the traditional treatment as closely as possible, the Newcastle team carried out a survey in Brazil to find out how the medicine is typically prepared and how much should be consumed.
The most common method was to produce a decoction. This involves boiling the dried leaves in water for 30 minutes and allowing the liquid to cool before drinking it as a tea.