5HTP :5-htp, natural cellulose, magnesium stearate (vegetable source)

Tyrosine : tyrosine, vegetable capsule, bulking agent; rice flour, vitamin b12

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[17] Mcgill University, Montreal – Psychopharmacology for the Clinician – Journal of Psychiatry Neuroscience 2007; 32(3)

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[19] Soranzo et al Fear expression is suppressed by tyrosine administration – Journal of Nature Scientific reports 9, 16073 (2019)