Biologic facts

Brand

Tresiba (Insulin Degludec)

No biosimilar to Tresiba is licensed. The 12-year reference exclusivity date of 09/2027 is an estimate from first approval; the Purple Book does not list patents, which can protect a biologic longer.

Tresiba was first approved by the FDA in 2015; the application holder is Novo Nordisk Inc.

The latest NADAC for TRESIBA FLEXTOUCH 100 UNIT/ML is $9.03 per mL (as of 10/28/2026).

Holder Novo Nordisk Inc.Approved 2015

01Exclusivity

When biosimilar competition can legally begin. The Purple Book lists reference exclusivity but not patents, which can protect a biologic longer.

Patents
Not listed in the Purple Book
Purple Book
Reference exclusivity
09/202712-year estimate from first approval
Purple Book

02Competition

Biosimilars
No biosimilar approved
Purple Book
Every makerEach licensed product and biosimilar maker.
PrescribersWho prescribes it, from Medicare data.
Spend and safetyMedicare Part B spend and safety reports.
Available in the full Tresiba profile.See what is included

03Supply and price

FDA drug shortage
ClearNot on the current shortage list
FDA shortages
NADAC
$9.03 per mLTRESIBA FLEXTOUCH 100 UNIT/ML, as of 10/28/2026
CMS NADAC

04Product

Application holder
Novo Nordisk Inc.
Purple Book
First approved
2015
Purple Book

Sources: FDA Orange Book, FDA Purple Book, FDA drug shortages, FDA enforcement reports and CMS NADAC, read through QOPE. Not medical or legal advice.