At BioMarin, we are committed to serving the needs of patients, families, and practices by providing easy access to treatment, support, and resources for people taking PKU treatment.
Explore BioMarin RareConnections
See how BioMarin Clinical Coordinators can help
Discover financial assistance options
*Source: PALYNZIQ HCP Strategic Tracking Study (March 2025).
†Terms and Conditions apply. Valid only for patients with commercial prescription insurance coverage who have a valid prescription for an FDA-approved indication and who meet additional eligibility criteria. Not valid for prescriptions reimbursed, in whole or in part, by any federal, state, or government-funded insurance programs (for example, Medicare, Medicare Advantage, Medigap, Medicaid, VA, DoD, or TRICARE) or where prohibited by law or by the patient’s health insurance provider. If at any time a patient begins receiving prescription drug coverage under any federal, state, or government-funded healthcare program, the patient will no longer be able to use the program and patient must notify BioMarin RareConnections at 1-866-906-6100 to stop participation. Patients residing in or receiving treatment in certain states may not be eligible for some or all of the program elements. Patients may not seek reimbursement for value received from the program from any third-party payers. Additional restrictions may apply. Offer subject to change or discontinuance without notice. This assistance offer is not health insurance. See BioMarin-copay-terms.com for full Terms and Conditions.
BOXED WARNING: ANAPHYLAXIS
WARNINGS AND PRECAUTIONS
Anaphylaxis
Other Hypersensitivity Reactions
Injection Site Infections
Hypophenylalaninemia (HypoPhe)
Some patients have experienced HypoPhe; monitor blood Phe levels periodically during treatment. Frequent blood Phe monitoring is recommended in the pediatric population. For blood Phe concentrations below 30 micromol/L, the dosage of PALYNZIQ may be reduced and/or dietary protein and Phe intake may be modified to maintain blood Phe concentrations within a clinically acceptable range and above 30 micromol/L.
ADVERSE REACTIONS
The most common adverse reactions in clinical trials of primarily adult patients (at least 20% in either treatment phase) were injection site reactions, arthralgia, hypersensitivity reactions, headache, generalized skin reactions lasting at least 14 days, nausea, abdominal pain, vomiting, cough, oropharyngeal pain, pruritus, diarrhea, nasal congestion, fatigue, dizziness, and anxiety.
In the clinical trials, adverse reactions were associated with treatment discontinuation, dosage reduction and temporary drug interruption. In the 285 primarily adult patients exposed to PALYNZIQ in an induction/titration/maintenance regimen in clinical trials, 44 (15%) patients discontinued treatment due to adverse reactions.
Pediatric Patients: In a clinical study of 55 patients aged 12 to less than 18 years of age, the most common adverse reactions (at least 20% and greater than in control) were injection site reactions, arthralgia, headache, pyrexia, hypersensitivity reactions, dizziness, nausea, vomiting, fatigue, and pain in extremity. Two patients (5.6%) discontinued treatment due to adverse reactions.
Blood Phenylalanine Monitoring and Diet
DRUG INTERACTIONS
Effect of PALYNZIQ on Other PEGylated Products
USE IN SPECIFIC POPULATIONS
Pregnancy and Lactation
Available data do not establish an increased risk of adverse developmental outcomes to the fetus exposed to PALYNZIQ.
Pediatric & Geriatric Use: The safety and effectiveness of PALYNZIQ in pediatric patients from birth to less than 12 years have not been established. Clinical studies of PALYNZIQ did not include patients aged 65 years and older.
You are encouraged to report suspected adverse reactions to BioMarin at 1-866-906-6100, or to the FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Please see full Prescribing Information, including BOXED WARNING, and the Medication Guide.
INDICATION
PALYNZIQ® (pegvaliase-pqpz) is a phenylalanine (Phe)-metabolizing enzyme indicated to reduce blood Phe concentrations in adult and pediatric patients 12 years of age and older with phenylketonuria (PKU) who have uncontrolled blood Phe concentrations greater than 600 micromol/L (10 mg/dL) on existing management.