The Sulfasalazine ENTERIC by PMS (generic) is on back order until April 9, 2015.
The Sulfasalazine plain by PMS is available.

The Sulfasalazine EN tablets by PFIZER are on backorder but according to the manufacturer, it will be available the week of February 23, 2015.
The Sulfasalazine plain tablets by PFIZER are available.

 

For more information, click here.