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Category - Amino Acids - Free Form

The Way Up From Down
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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."

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.

Other Ingredients: cellulose, magnesium silicate, magnesium stearate, silicon dioxide


* These statements have not been evaluated by the U.S.Food & Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease

Norival 60 Capsules - 300 mg $ 16.95

Norival 60 Capsules - 300 mg
Element Amount %Daily Allowance% Serving Size
Pyridoxal 5' Phosphate
300 mg
25 mcg
10 mg
1 Capsule

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