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Tandem t:slim X2 pump cleared for use with Lilly’s Lyumjev ultra-rapid insulin

September 29, 2025 By Sean Whooley

Tandem Diabetes Care t_slim X2 with control IQ +
The t:slim X2 automated insulin delivery system with Control IQ+ technology. [Image courtesy of Tandem Diabetes Care]
Tandem Diabetes Care (Nasdaq:TNDM) announced today that it received approval to deliver Lyumjev ultra-rapid acting insulin with its t:slim X2 pump.

Eli Lilly offers the Lyumjev (insulin lispro-aabc injection) ultra-rapid acting insulin. Tandem can now provide its t:slim X2 pump with Control-IQ+ automated insulin delivery technology with the insulin in the U.S.

This latest clearance means t:slim X2 can deliver Humalog, Novolog and Lyumjev U-100 insulins in the U.S.

San Diego-based Tandem — one of the largest diabetes tech companies in the world — said it supported Lyumjev clearance for its pump with data from a 13-week, multi-center study of 179 individuals. Outcomes demonstrated high satisfaction and quality of life benefits.

Read more about Tandem and the rest of the diabetes tech industry in our free Diabetes Technology Special Report.

Lyumjev received authorization for general use in insulin pumps in the U.S. in 2021. However, pump manufacturers have to perform extensive testing to verify compatibility with individual pumps and automated systems. Tandem and Lilly collaborated to support the clinical trial showing the benefits of using the rapid insulin with t:slim X2. They plan to continue working to secure compatibility with the Mobi miniature pump as well.

Lilly offers Lyumjev through its Insulin Value Program. It allows anyone with commercial insurance or no insurance to fill a monthly prescription for $35.

“This latest milestone reinforces our commitment to facilitating choice and access for people who rely on insulin therapy,” said Jordan Pinsker, MD, Chief Medical Officer at Tandem Diabetes Care. “This clearance allows people with type 1 diabetes ages 2 and above and all adults with type 2 diabetes to use Lyumjev with the t:slim X2 insulin pump, providing more flexibility for how people choose to manage their diabetes.”

Filed Under: Business/Financial News, Diabetes, Drug-Device Combinations, Featured, Pharmaceuticals, Regulatory/Compliance, Technology Tagged With: Eli Lilly, Eli Lilly & Co., Tandem Diabetes Care

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About Sean Whooley

Sean Whooley is an associate editor who mainly produces work for MassDevice, Medical Design & Outsourcing and Drug Delivery Business News. He received a bachelor's degree in multiplatform journalism from the University of Maryland, College Park. You can connect with him on LinkedIn or email him at [email protected].

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