Spearmint is an herb. The leaves and oil are used to make medicine. People use spearmint for conditions such as flatulence, indigestions, nausea, vomiting, ADHD, and other conditions.
Cautions and Side Effects of Spearmint Leaf:
Pregnancy and breast-feeding: Spearmint is POSSIBLY UNSAFE when used in excessive amounts during pregnancy.
Kidney disorders: Spearmint tea might increase kidney damage. Higher amounts of spearmint tea seem to have greater effects. In theory, using large amounts of spearmint tea might make kidney disorders worse.
Liver disease: Spearmint tea might increase liver damage. Higher amounts of spearmint tea seem to have greater effects. In theory, using large amounts of spearmint tea might make worsen liver disease.