Drugs
Approval Withdrawn on Upsher-Smith’s ANDA for Zaleplon
Federal Register notice: FDA has withdrawn the approval of an Upsher-Smith Laboratories ANDA for zaleplon (reference product: Sonata) capsules, 5 mg and 10 mg. The company requested the withdrawal after being contacted by FDA about concerns with the validity of bioequivalence data from studies conducted by an unnamed contract