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Xyntha is a brand of recombinant factor VIII (octocog alfa) used to treat hemophilia A. About biosimilars: - In the United States, there isn’t an FDA-approved product labeled specifically as a biosimilar to Xyntha. - In other markets (e.g., the EU), there are biosimilars to Advate (another octocog alfa product). A well-known example is Kovaltry (BAY 81-8973). Because Advate and Xyntha are both recombinant factor VIII products, a biosimilar to Advate is often used in a similar way to Xyntha, but regulatory labeling is based on the reference product (Advate) in those markets. - Other extended- or standard-half-life FVIII products exist, but they are not direct “biosimilars to Xyntha”; they’re different brands with their own approvals. If you’re looking for current, location-specific options, tell me your country or region (US, EU, etc.), and I can pull together the latest approved products and their regulatory notes. Also, if you’re evaluating treatment options, discuss with a hematologist, as they can confirm what’s approved and appropriate in your area.