Pill Identification by Imprints: U 400 Home Pill Identification by Imprints: U 400 1 result THEOPHYLLINE ER 400 MG TABLET Side 1: U 400 Color: White Side 2: P F Shape: Round Other Popular Drug Imprint PRODRIN K 111 GP325 LCI 1337 44-346 TCL 086 G00 PROVIGIL LL714 1018 Erymax 250 mg PIX MAXINATE Voltaren XR SPI J MYLAN DE 15 IB 200 CPC 490 MP 573 US H 94 S 4 2 57 M 71 A511 K106 SG C 22 V344 AP211 14 or 11 ANCOBON and logo 500 ICN M 171 BL 50 HZT CI 5270 93 E 139 54 741