PRIORIX: side effects, ingredients & package insert

PRIORIX ingredients (FDA package insert, Section 11)

Per-dose composition as stated in the prescribing information; verified 2026-07-09. Click an ingredient for every vaccine that contains it.

Note: Contains no gelatin — relevant for gelatin allergy. Residual ovalbumin possible from chick-embryo manufacture.

Source: DailyMed. Formulations change — re-verify before clinical use.

PRIORIX side effects: where the data is

Reported reactions for PRIORIX and the other MMR products are compiled on the MMR vaccine page: pre-licensure trial reactogenicity, VAERS report counts, and international databases (Canada Vigilance, EudraVigilance, Lareb, VigiAccess). Those counts are spontaneous reports with no denominator — a report does not establish that the vaccine caused the event.

• Pre-licensure clinical trial data
• Post-licensure surveillance (VAERS and international)
• Documented adverse events and causality assessment
• Vaccine Injury Table (VICP) — compensable injuries

PRIORIX lot number lookup

PRIORIX vs M-M-R II

All licensed MMR vaccine products side by side. Differences in platform, adjuvant and route are the usual reasons one is chosen over another; efficacy and safety comparisons belong to the trial and surveillance sections of the MMR vaccine page.

Schedule and age range

Licensed ages and the recommended series for MMR vaccines are on the MMR vaccine page; how 31 countries schedule it is on MMR schedule by country. Always confirm the product-specific age range in the current package insert.

Common questions about PRIORIX

What are the side effects of PRIORIX?

Common reactions listed in the PRIORIX package insert are injection-site pain, redness or swelling and short-lived systemic symptoms such as fever, tiredness or irritability. Rarer events and the reported counts from VAERS and international databases are on the MMR vaccine page; counts are reports, not rates, and do not prove the vaccine caused the event.

What is in PRIORIX?

PRIORIX contains Measles virus (live, attenuated); Mumps virus (live, attenuated); Rubella virus (live, attenuated) as antigen; adjuvant: none; it is preservative-free. Excipients: Anhydrous lactose, Sorbitol, Amino acids, Mannitol, Neomycin sulphate, Ovalbumin, Bovine serum albumin. Amounts per dose are in the table above, taken from Section 11 of the FDA package insert (verified 2026-07-09).

Where is the PRIORIX package insert?

The FDA-licensed prescribing information for PRIORIX is published by GlaxoSmithKline Biologicals and the FDA; the source used for this page is https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=95c6fdb6-b587-4413-92f9-d592b9f7a23e&type=display. Formulations change, so re-verify the current insert before clinical use.

How does PRIORIX compare with M-M-R II?

PRIORIX (GlaxoSmithKline Biologicals) uses a live attenuated platform with adjuvant none, given subcutaneous; M-M-R II (Merck Sharp & Dohme LLC) uses live attenuated with adjuvant none. Both are licensed MMR vaccines; the comparison table above lists every product.