Chamomile tea has long been considered a brew that soothes. Test-tube evidence suggeats that chamomile tea also has moderate antimicrobial activity and significant antiplatelet-clumping activity.
The researchers also describe evidence of bioactivity of peppermint tea. In test tubes, peppermint has been found to have significant antimicrobial and antiviral activities, strong antioxidant and antitumor actions, and some antiallergenic potential. Based on a human clinical trial, the team also has reported that drinking hibiscus tea lowered blood pressure in a group of pre-hypertensive and mildly hypertensive adults.