72 units of Traditional Medicinals Herb Tea Think O2 16 bag. Think-O2 is formulated to promote mental performance as it blends herbs traditionally used to enhance memory function.Think-O2 combines the leaves of ginkgo, gotu kola, lemon balm, peppermint, rosemary and sage because they all contain beneficial compounds known to maintain and preserve choline levels in the brain. Maintaining a healthy choline level supports memory performance and the learning functions of the brain. Modern research has corroborated the traditional use of these herbs by demonstrating their enhancement of cholinergic mechanisms in the brain. Think-O2 also tastes good, refreshing, minty and memorable. See all Product Description