GREENSTONE LLC is one of the longest-running U.S. marketers of generics


GREENSTONE LLC is a subsidiary of Pfizer Inc. and is one of the longest-running marketers of generics in the United States.

Today, GREENSTONE provides a product pipeline that highlights generic equivalents to some of the top-selling molecules on the market, including, atorvastatin calcium (Lipitor®), gabapentin (Neurontin®), and azithromycin (Zithromax®). The GREENSTONE portfolio includes authorized generic equivalents of Pfizer Inc products that cover a broad range of therapeutic areas. GREENSTONE’s generics have the same active and inactive ingredients and are typically the same size, shape, and color as the brand name drug.

Focusing on a customer-centric approach, GREENSTONE strives to provide a continuous supply of medicines that benefit both patients and customers. This has allowed GREENSTONE to establish relationships with more than 100 customers across many classes of trade. But the company’s most critical assets are their dedicated staff, all of whom are committed to product quality, supply, and making GREENSTONE an industry generic supplier of choice. GREENSTONE’s Business Alliances Team partners with pharmaceutical manufacturers to help secure future earnings on innovator brands facing patent expiration. These experienced professionals can help turn a loss of exclusivity into a new opportunity when a successful product becomes generic.

Recent additions to GREENSTONE’s portfolio of authorized generics include amlodipine besylate and atorvastatin calcium (Caduet®), tolterodine tartrate (DETROL®), and voriconazole for oral suspension (VFEND®). The addition of these molecules is another way GREENSTONE is showing its commitment to delivering a consistent supply of the generic medications patients need. According to an IMS Health report from January 2014, based on unbranded generics sales, GREENSTONE is a top-10 generics company in the United States. As a subsidiary of Pfizer Inc, GREENSTONE operates under the same values and commitment to bringing quality generics to patients who need them so they can lead healthier lives.

For more information, visit, or call GREENSTONE LLC Customer Service at 1-800-447-3360.

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