How they work
All ingredients in Happy Tuesdays are backed by scientific research. Happy Tuesdays only contain high quality, junk-free nutrients in easy-to-absorb forms.
Scientific research5-HTP (5-hydroxytryptophan)
5-HTP, the direct precursor to the neurotransmitter serotonin, is the quickest and most effective way to boost and replenish serotonin in the brain. Stress, lack of sleep, and exposure to chemical toxins accelerate serotonin depletion which can result in irritability, anxiety, insomnia, and depression. 5-HTP expedites the restoration of normal serotonin levels to promote normal brain function and good mental health.
Birdsall, T.C., 5-Hydroxytryptophan: a clinically-effective serotonin precursor. Alternative Medicine Review, 1998. 3(4): p. 271-80. http://www.ncbi.nlm.nih.gov/pubmed/9727088