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 T88 PLIVA 324 MYLAN DE 40 logo and 4404 EVOXAC logo and 047 AX AB1 2122 WW MUTUAL 902 CL 75 PROCARDIA XL 60 M 63 IMITREX 50 68 85 ST 300 A33 VALTREX 1 gram MYLAN 1570 LEVOXYL 8 06 LCI 1445 G 019 US 20 NAPROSYN 250 HP 362 GG 331 N 344 IP 179 M 113 P291 EL501 26 2080 M 106 MP 183 A 51 M 1745 0.2