The US Food and Drug Administration has removed the AB-rating indicating therapeutic equivalence with the reference product for Accord Healthcare’s generic Prograf (tacrolimus) 0.5mg, 1mg, and 5mg capsules, after a series of post-approval studies raised concerns of the risk for increased toxicity for patients taking Accord’s generic compared to Astellas Pharma’s branded immunosuppressant.
Tacrolimus capsule and injectable dosage forms were approved by the FDA under the Prograf name in 1994. The first generic version of tacrolimus capsules, from Sandoz, was approved in August 2009, with many more following over the years