L-Tyrosine – 90 capsules Comments Off on L-Tyrosine – 90 capsules Sorry, this product cannot be purchased. $20.00 Add to cart Category: Specialty FormulasL-TYROSINE is an amino acid precursor to the catecholamine pathway.Related Products Betaine HCl* – 120 capsules $40.00 Add to cart D-Mannose – 90 capsules $34.00 Add to cart