9. L-Tyrosine
L-tyrosine is an amino acid that serves as a precursor to the neurotransmitters norepinephrine and dopamine, which have been shown to be deficient in many manic-depressives during their depressed cycles. The supplementation of this amino acid may help the body to form more of these substances during these difficult times; in addition, it may be helpful in cases when clinical or subclinical thyroid disease is present. General recommendations are usually 500-5,000 mg per day, on an empty stomach in the morning or early afternoon (start at a low level and then work up gradually). As with all amino acids, try to get pharmaceutical grade product in capsules.


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