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Committed to providing quality generic medications to help patients lead healthier lives


GREENSTONE, a US-based company owned by Pfizer Inc., one of the world’s premier biopharmaceutical companies, has been providing Authorized Generic versions of original brand-name drugs for over 25 years. GREENSTONE also provides Authorized Generics from other manufacturers in addition to several generic products. GREENSTONE Authorized Generics carry the legacy of the brand-name products' years of clinical research, data, and patient and physician experience.

GREENSTONE currently offers more than 75 different generic medications, covering a broad range of diseases. And, we’re always adding new generics to our portfolio. At GREENSTONE, we understand that access to generic medication is important; in fact, nearly 9 in 10 prescriptions filled in the United States today are for generic medications.

GREENSTONE also offers a Pharmacy Locator Service that can personally assist in locating your GREENSTONE medication at a nearby pharmacy. This helps ensure that month to month, pill to pill, your generic will look the same.

Sound good?

We recommend you begin by looking for your medicine. You can search by generic or brand name using the product search box here.