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 L873 Northera 148 WATSON 783 54 213 3205 PF WPI 3155 logo and 404 E 44 M A20 CZ PH033 44 175 537 8N ZE66 PERCOGESIC 93 215 H23 0.75 COZAAR RX693 logo and 88 logo and 4356 R719 66 or 67 4833X 15/1000 MERRELL 277 APTALIS 3 W 785 953 V 1 BI 6 L17 13 33 VIO9111 RD27 A 50 U 88