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 KPI 284 U U CPC 2369 FL 290 C 115 MYLAN 6088 HP 229 L150 RX 526 A533 PFIZER 411 D C 353 2101 V V267 93 7351 L020 342 J94 SANDOZ 618 RU10 allegra-D APO 850 Y04 33 P58 Triax M0100 TA3M SZ 431 637 R179 K 6 S21 Nitro-Dur 0.4 mg/hr M 86 LMT ucb 500 MYLAN 2537 9 2 SZ 467