B-12 and 1,200 mcg. of folic acid. Depression, the feeling of being on the bottom, is a terrifying and overwhelming condition. There are certain chemical drugs that can offer some relief, but usually at the price of some serious side-effects. DL phenylalanine and 125 mg. St. John's Wort.
Tyrosine is a non-essential amino acid synthesized from phenylalanine in the body.
In addition, phenylalanine, besides being converted to tyrosine, can be converted to phenylethylamine. This substance is an internal stimulant and anti-depressive chemical in humans. According to many researchers, tyrosine may be an effective anti-depressant in several major forms of depression. Tyrosine elevates the levels of epinephrine, morepinephrine and dopamine, the brain's feel good hormones. Other studies indicate that phenylalanine has the same effect.