L-Tyrosine is used to treat conditions including depression or mood disorder, poor coping ability, fatigue, low sex drive, low metabolism. It can also improve endurance under stress and is effective as an appetite suppressant. When taken properly, L-Tyrosine can assist a sluggish thyroid and aid the dieter in losing excess, unwanted pounds.

The suggested dosage for healthy adults ranges from 500 to 1500 mg per day.