Sona Pure Herbs Tagar for Sleep Wellness - 60 TabletsAbout this Product Tagar contains volatile oils and phytochemicals such as alkaloids, iridoids, valepotriates, gamma aminobutyric acid (GABA), and flavanones, which are responsible for its medicinal value. GABA is a neurotransmitter, a chemical messenger in the brain, that slows down brain activity by blocking specific signals in the central nervous system. It produces a calming effect, helping people fall asleep faster and sleep longer.