Herbal Booster? day formula contains thermogenic herbs along with low levels of green tea and synephrine, which work synergistically to support vitality. Phenylalanine is a precursor to two neurotransmitters that help support an alert state. Calm Mood? night formula addresses the mental challenges of dieting, with mood-soothing herbs such as St. John's wort and valerian root, and calming factors such as taurine, GABA and lemon balm. The Diet-Phen Weight Loss Plan provides a comprehensive approach to health and well-being