I made a neurotropic formula on here with clinically active amounts of st. johns wort, 5-htp, sulbutiamine, ginkgo biloba, guarana seed extract, and with synergistically active amounts of DMAE, folic acid, and vitamin b12.
Serving Size: 2 pills
St. Johns Wort 300mg
5-HTP 300 mg
Sulbutiamine 200mg
Ginkgo Biloba 150mg
Guarana seed extract 75mg
DMAE 40mg
Folic Acid 400mcg
Vitamin B12 20mcg
This formula has the most drug-like feel to it from all the nootropics I've taken (which is a fairly substantial list).