PheBLOC LNAA for PKU Dietary Management

PheBLOC LNAA supports the ongoing nutritional management of phenylketonuria (PKU), a metabolic condition in which the body cannot properly break down the amino acid phenylalanine. LNAA stands for large neutral amino acids — the group of amino acids that compete with phenylalanine for transport across the blood-brain barrier. By supplying these competing amino acids, PheBLOC is formulated to help limit how much phenylalanine reaches the brain, complementing the low-phenylalanine diet that is central to PKU care.

We carry the PhenylAde PheBLOC LNAA 3g Pouch (95504), a convenient single-serving format that makes it easier to keep up with a consistent regimen at home, at work, or while traveling. The pre-portioned pouches remove the guesswork of measuring and are simple to fold into an established daily routine — a practical detail for older children, teens, and adults managing PKU long-term.

Because LNAA therapy is intended as part of a broader medical nutrition plan rather than a standalone fix, dosing and suitability should always be directed by your metabolic dietitian or physician. LNAA formulas are generally used alongside — not in place of — dietary phenylalanine restriction, and individual needs vary considerably by age, phenylalanine tolerance, and treatment goals.

Honest Medical stocks PheBLOC alongside a range of specialized metabolic and medical nutrition products, so families and clinicians can source what they need reliably. If you have questions about product form, serving size, or fitting PheBLOC into an existing PKU protocol, reach out before ordering so we can help you get the right supply on hand.