Allergic Inflammation

• In 2012 The American Journal of Physiology Lung and Molecular Physiology published an animal study which found that 5-HTP reduced allergic lung inflammation by 70 to 90 percent in mice.

Psychological Stress

• In 2010 Neuro Endocrinology Letters published a study of 15 subjects who experienced recent romantic break-ups. After 3 weeks of treatment with 60 mg/day 5-HTP participants had reduced romantic stress scores and after 6 weeks subjects exhibited a significant increase in both BDNF (brain derived neurotrophic factor) and serotonin levels.