Pill Identification by Imprints: K 4 Home Pill Identification by Imprints: K 4 1 result PROMETHAZINE 50 MG TABLET Side 1: K 4 Color: Pink Side 2: Shape: Round Other Popular Drug Imprint 672 TL388 E 223 25 222 A026 W 150 Lilly 3238 LU E01 M 137 RX 829 EXELON 3 mg L374 MYSOLINE 50 G441 BMS 100 L237 BVF 240 I 35 54 315 M 943 NOVO 291 T 46 M EN3 1272 73 00 A116 B 073 54 242 C182 SZ 659 GG C6 172 logo and 2577 SANKYO 536 MYLAN 185 396 B 586 or B 587 M77 M 145