The US biosimilar market surged in 2024, driven by FDA approvals and looming patent cliffs, with 63 biosimilars approved and 42 launched. Innovator companies like Novartis, Biogen, Pfizer, and Amgen are entering biosimilar development to mitigate sales erosion. Challenges include market access, reimbursement barriers, and HCP/patient perception. Education and transparency are crucial for biosimilar adoption, with AI tools potentially aiding HCPs.