I can only respond by sharing with you what I take on a daily basis for the past several years.
I start in the morning with a multivitamin and add to that two capsules of L-Dopa, one capsule each of L-tyrosine, 5-HTP and Tribulus. In addition, I take one 20 mg capsule of Adderall XR and one Wellbutrin pill as well as one 10 mg pseudoephedrine pill, two 5 mg ephedrine pills, one zinc pill, two T1 capsules, one or two ibuprofen pills and about 1000 mg of PEA.
Later in the day, I'll repeat this dosage one more time.
Before bed, I will take one GABA, one 5-HTP and three 5 mg melatonin pills.
I have been following this regimen with minor variations for many years now and as I approach my 64th birthday, I remain in top physical, mental and emotional health.
This regimen may not suit everyone but it has certainly worked for me.