Spearmint is a herb, and therefore as with most herbal tea, is naturally
caffeine free.  Spearmint is often consumed after meals to aid digestion.
The oils in spearmint help relieve gas pains, sweeten your breath, and
aid in relief from heartburn, stomach ache, and nausea.   Spearmint tea
is a cool and refreshing beverage after meals or before bedtime.  It also
produces a chilling taste sensation when taken over ice.