Pill Identification by Imprints: U 600 Home Pill Identification by Imprints: U 600 1 result THEOPHYLLINE ER 600 MG TABLET Side 1: P F Color: White Side 2: U 600 Shape: Rectangular Other Popular Drug Imprint logo and A1 S405 500 Z 3926 V 4171 LK100 LV Lilly 3233 PA 915 D2/1000 1251 BVF 120 T1 200 B 35 1327 64 cor 188 N 77 C02 IBU 800 X CP 25 RE 75 V221 HP 1 F 84 216 E 139 GLYSET SANKYO M605 logo and 3116 3169 logo and 500-40 BPI 152 WPI 3659 par 397 BP 814 2232 DAN 44 542