Colitis Home > Generic Azulfidine

There is currently a generic form of Azulfidine. The generic version, which is sold under the name Sulfasalazine 500 mg tablets, is manufactured by several drug companies, including Major Pharmaceuticals, Watson Pharmaceuticals, and Greenstone Pharmaceuticals. All generic versions of Azulfidine have been given an "AB" rating by the FDA, meaning they are considered equivalent to the brand-name version.

Generic Azulfidine: An Overview

Azulfidine® (sulfasalazine) is a prescription medication that has been licensed to treat ulcerative colitis. It is part of a group of medications known as aminosalicylates. Azulfidine EN-tabs® is a delayed-release version that is approved to treat the following conditions:
Azulfidine and Azulfidine EN-tabs are manufactured by Pfizer, Inc. However, they have come off-patent and are available in generic forms.

Who Makes Generic Azulfidine?

Generic Azulfidine is sold under the name Sulfasalazine 500 mg tablets and is made by the following companies:
  • Watson Pharmaceuticals
  • Major Pharmaceuticals
  • Greenstone Pharmaceuticals.
Generic Azulfidine EN-tabs is sold under the following names:
  • Sulfasalazine 500 mg delayed-release tablets (made by Greenstone Pharmaceuticals)
  • Sulfazine EC 500 mg delayed-release tablets (made by Qualitest Pharmaceuticals).

Is Generic Sulfasalazine as Good as Azulfidine?

All generic medications must undergo certain tests to compare them to brand-name medications. The U.S. Food and Drug Administration (FDA) then looks at these tests to decide if the generic versions are equivalent to the brand-name medications and assigns a rating to each one. An "AB" rating means that the FDA has determined that a generic medication is equivalent to a brand-name medication. All of the versions of generic Azulfidine and Azulfidine EN-tabs currently available have an "AB" rating, meaning they should be equivalent to Azulfidine or Azulfidine EN-tabs.
However, generic medications are allowed to have different inactive ingredients from the brand-name medication. This might include fillers, dyes, or other ingredients, which may cause problems for people with certain allergies or sensitivities.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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