Vitalyze also significantly increases physical work capacity by improving muscular oxygen utilization. Finally, for all of you that experience jet lag, Vitalyze accelerates recovery following long and tiring flight schedules. DL- Phenylalanine also has natural pain relieving and depression alleviating properties. Additional studies have also shown Phenylalanine's ability to decrease chronic back pain, dental pain and pain associated with migraines and menstruation. L-Tyrosine is synthesized from Phenylalanine in the body.
Dopamine is vital to mental function and also seems to play a role in sex drive.
U.S. soldiers undergoing various forms of stress tests were given tyrosine to see what effect it might have on their performance. The soldiers who took tyrosine performed significantly better on a variety of tests compared to those who took a placebo. They were more efficient, alert and had fewer complaints. Clinical studies have also shown that tyrosine is helpful in reducing headache, irritability, fatigue, muscular discomfort, sleepiness and depression. Eleutherococcus has been shown to increase energy, stamina, and help the body resist viral infections and environmental toxins.