What are the ingredients in Serotonin Nutrients sourced from?

Ingredient	Source
Vitamin B6, Niacin, Inositol	Synthetic
5-Hydroxytryptophan (5-HTP)	Griffonia simplicofolia (seed)
Saffron Extract	Crocus sativus (stigma)
Turmeric Extract	Curcuma longa (rhizome)