Norival - N - Acetyl - L - Tyrosine

Norival is a specialized tyrosine product used to help low moods when tyrosine hasn't worked effectively enough.*

Norival combines biopterin with N-acetyl-L-tyrosine, a highly bioavailable form of L-tyrosine for the natural precursor treatment of low moods N-acetyl-L-tyrosine can be used in lower doses than L-tyrosine.*

The amino acid L-tyrosine converts to L-dopa & norepinephrine in the brain to correct depression. The conversion is catalyzed by the enzyme tyrosine hydroxylase. Other enzymes phenylalanine hydroxylase & tryptophan hydroxylase also play important roles in the synthesis of neurotransmitters which modulate and control mood.*

These enzymes only work in the presence of a co-factor called biopterin. Sometimes low biopterin levels are the weak link in the sequential chain of reactions leading to the creation of these essential brain chemicals.*

Researchers have found decreased biopterin in the postmortem brains of those with depression, & an increased excretion of biopterins in those with severe depression. Concentration of biopoterin in the postmortem brains of those with Alzheimer's was significantly reduced when compared with controls.*

For more details on the natural precursor treatment of depression, see Dr. Slagle's book "The Way Up From Down."

Please see our full line of doctor selected Alternative Health Products and for further information read Dr Priscilla Slagle's medical issue Newsletters

DIRECTIONS:As on product label.
Be sure to take with 1-2 pyridoxal-5-phosphate with each dose.
Be sure to be taking a good multi vitamin / mineral some time in the day.

*THESE STATEMENTS HAVE NOT BEEN EVALUATED BY THE U.S. FOOD AND DRUG ADMINISTRATION. THESE PRODUCTS ARE NOT INTENDED TO DIAGNOSE, TREAT, CURE, OR PREVENT ANY DISEASE.