Core Insights - Teva Pharmaceuticals and Alvotech announced FDA approval for SELARSDI™ (ustekinumab-aekn) as interchangeable with Stelara® (ustekinumab), effective April 30, 2025, for various conditions including psoriatic arthritis and Crohn's disease [1][7][8] Company Developments - The approval of SELARSDI is seen as a significant advancement for patient access to affordable treatment options, aligning with Teva's strategy to lead in the biosimilars market [2][4] - Teva has launched two biosimilars, SELARSDI and EPYSQLI, and has a robust pipeline of additional biosimilars expected to launch in the coming years [2][4] - Alvotech is expanding its portfolio with two approved biosimilars in the U.S. and three additional biosimilar candidates under FDA review, indicating a strong growth trajectory [2][6] Product Information - SELARSDI is available in multiple presentations, including 45 mg/0.5 mL and 90 mg/mL for subcutaneous injection, and 130 mg/26 mL for intravenous infusion [2][7] - The biosimilar targets the p40 protein, crucial for treating immune-mediated diseases, and is produced using the same cell line and process as Stelara® [3][7] Strategic Partnerships - Teva and Alvotech have a strategic partnership for the exclusive commercialization of biosimilars, which has been extended to include additional products and presentations [4][5] - The partnership allows Teva to leverage its extensive sales and marketing infrastructure while Alvotech manages development and manufacturing [4][5] Market Context - The approval of SELARSDI and other biosimilars is part of a broader trend towards increasing access to biologic treatments, which is essential for lowering healthcare costs [2][4] - The FDA's approval of SELARSDI as interchangeable with Stelara® is expected to enhance competition in the biologics market, benefiting patients and healthcare providers [2][4]