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Common side effects shared by both medications: Nausea (most common, usually transient peaks during dose escalation) Vomiting Diarrhea or constipation Decreased appetite and early satiety Bloating or stomach discomfort Injection site reactions Key safety warnings that apply to both drugs: FDA Boxed Warning (both): Possible risk of thyroid C-cell tumors, based on animal studies

That is why a cheaper vial is not automatically equivalent to a brand-name pen

Ro published a real-world study in Obesity journal on December 10, 2025

Last month, our team at Octavus Consulting published a deep dive on the biosimilars landscape covering the $300B LOE opportunity, deal activity trends, competitive landscape, and what the next wave really looks like beyond Humira and Herceptin

Pitts, PhD, president and co-founder of the Center for Medicine in the Public Interest, former associate commissioner of the FDA and visiting professor at University of Paris School of Medicine, said during the briefing