On 6 January 2026, Fresenius Kabi announced that it has introduced a new presentation of Otulfi®, biosimilar to Janssen’s/J&J’s Stelara® (ustekinumab), in a 45 mg/0.5 mL single-dose vial for subcutaneous injection.
Following the introduction of this new presentation, Fresenius Kabi now offers all dosage forms and strengths of Stelara®, with Fresenius Kabi’s Otulfi® also having received interchangeability designation from the FDA in May 2025.
Otulfi® was developed by Formycon and was approved in the US and Europe in September 2024. It is being commercialised in the US, Canada and most of Europe by Fresenius Kabi, under a global licence agreement entered into between Formycon and Fresenius in February 2023. In August 2023, Formycon and Fresenius reached a settlement with J&J in the US enabling the US launch of Otulfi® in March 2025.
There are a number of other ustekinumab biosimilars already launched in the US: Amgen’s Wezlana® (January 2025), Alvotech/Teva’s Selarsdi® (February 2025), Samsung Bioepis/Sandoz’s Pyzchiva® (February 2025), Biocon’s Yesintek® (February 2025), Celltrion’s Steqeyma® (March 2025) and Hikma’s Starjemza™ (November 2025).