tirzepatide lawsuit 2025 US judge denies injunction, restricting copies of Lilly weight-loss drug Mounjaro Lawsuit - July 2026

Description

Under Hatch-Waxman, brand companies are required to list qualifying patents within 30 days of patent issuance or drug approval, whichever is later

Despite the potential side effects, tirzepatide can be a highly effective medication when used properly

Serious Side Effects (Both Drugs Carry These) Both medications carry an identical FDA boxed warning for thyroid C-cell tumours and share these serious risks: Thyroid C-cell tumours contraindicated with personal/family history of medullary thyroid carcinoma or MEN 2 Pancreatitis discontinue and seek care for severe, persistent abdominal pain Gallbladder disease gallstones, partly from rapid weight loss Hypoglycaemia especially if combined with insulin or sulfonylureas Acute kidney injury from dehydration during vomiting/diarrhoea Aspiration risk during surgery inform your anaesthesiologist, as both delay gastric emptying Cost Comparison: Zepbound vs Wegovy in 2026 Cost and insurance coverage frequently decide the final prescription

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The below chart outlines some of the key similarities and differences between once-weekly tirzepatide (Mounjaro) and injectable semaglutide (Wegovy and Ozempic)