Pill Identification by Imprints: RF 28 Home Pill Identification by Imprints: RF 28 2 results CHLOROQUINE PH 500 MG TABLET Side 1: RF 28 Color: White Side 2: Shape: Round CHLOROQUINE PH 500 MG TABLET Side 1: RF 28 Color: White Side 2: Shape: Round Other Popular Drug Imprint M A10 A 25 G 304 I73 logo and 667 644 G443 U S EP 121 AX7 MYLAN G1 EV0077 E 129 logo 753 PROVERA 2.5 C84 NPS 275 248 M B2 APO900 G71 13 31 F 2 PA 500 142 PC23 DX AN899 15 PLIVA 334 N 350 CP 100 A 13 54 337 L 166 R 5 LAMICTAL 150 L 27 OP BMS 6064 WW 125