Pill Identification by Imprints: BY4 Home Pill Identification by Imprints: BY4 15 results PRIMAQUINE 26.3 MG TABLET Side 1: BY4 Color: Purple Side 2: Shape: Round PRIMAQUINE 26.3 MG TABLET Side 1: BY4 Color: Purple Side 2: Shape: Round PRIMAQUINE 26.3 MG TABLET Side 1: BY4 Color: Purple Side 2: Shape: Round ‹ 1 2 › Other Popular Drug Imprint 173 57 55 b 212 GX 623 Z350 50 mg 0813 L 298 37 97 WPI 6 B M T E 64 4186 WELLBUTRIN SR 200 STO 50 TO SZ 987 PA 915 208 E 799 4 DCI PFD A 117 PLIVA 328 2130 N111 DROXIA 6336 K5 V2 MYLAN 3205 DF logo and 52 MYLAN 5410 1507 MACRODANTIN 100 mg mynatal 54 583 A 44 PRAVACHOL 20 MP 542 U-S 500