About us banner



Founded in 1993, GREENSTONE LLC is a wholly owned subsidiary of Pfizer Inc., one of the world's premier biopharmaceutical companies. We offer a comprehensive and diverse product portfolio of Authorized Generic medicines, covering a broad range of therapeutic areas. GREENSTONE provides Authorized Generics (AGs) from Pfizer as well as other manufacturers, in addition to some generic products.

Focused on Customers

GREENSTONE Is an Industry Leader in the Support We Provide to Customers Through Our Customer-Focused Team Model

GREENSTONE leverages decades of experience and a broad product portfolio that aims to benefit patients, pharmacists, physicians, and partners.

Vector Smart Object

Unlocking Value for Our Partners

About infographic

Since 1993, GREENSTONE Has Worked Side by Side With Innovator Brands to Successfully Unlock Value for Authorized Generic Products

With proven experience from over 140 launches,* the GREENSTONE team delivers value to our partners through opportunity evaluation, innovative commercial capabilities, and an integrated team approach.

Simply contact [email protected] and find out how we can create value for you. 

*Including non-Pfizer launches.