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Why choose a GREENSTONE generic?

Experience, quality, and personalized service are all good reasons.

WELCOME. We’re glad you’re here.

GREENSTONE, a US-based company owned by Pfizer Inc., has been providing Authorized Generic versions of original brand-name drugs for over 25 years.

What is an Authorized Generic?

An Authorized Generic drug is made by the manufacturer of the original brand-name drug but does not use the brand name on the label and may have a different color or marking. GREENSTONE Authorized Generics are available at generic pricing.* All generics are bioequivalent to the brand (meaning they work in the same manner when given in the same way and at the same dose) and meet FDA's quality and manufacturing standards.

Committed to high-quality generics.

  • GREENSTONE Authorized Generics are manufactured to the same standards and at the same facilities as Pfizer brand-name drugs
  • GREENSTONE Authorized Generics carry the legacy of the brand-name products' years of clinical research, data, and patient and physician experience

Find out if and where your medicine is available.

  • Search for your medicine by generic or brand name
  • Fill your prescription online or find a pharmacy near you

*A number of factors will determine how much you will pay for your medicine, including insurance co-pays, pharmacy charges, and savings cards. Please contact your insurance or pharmacy for your specific cost information. GREENSTONE also provides Authorized Generics from other manufacturers in addition to several generic products.

GREENSTONE Product Finder

Once you’ve located the GREENSTONE generic version of your prescription medication, we can help you find the nearest pharmacies that carry it.

Please enter a medication name.



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Privacy Statement

GREENSTONE understands your personal and health information is private. The information you provide will only be used by GREENSTONE and parties acting on its behalf to send you the materials you requested and other helpful information and updates on GREENSTONE generic medications, as well as related treatments, products, offers, and services.

Trouble Locating Your GREENSTONE Generic?

Call the GREENSTONE Pharmacy 
Locator Service and one of our 
representatives will personally assist you in locating your GREENSTONE medication at a nearby pharmacy.

1-855-222-8588 1-855-222-8588

Monday–Friday (8 AM–9 PM ET)

Your free search results will be provided in about an hour.

If your request is received after hours, a representative will call you during business hours the next day.