Pill Identification by Imprints: RE 21 Home Pill Identification by Imprints: RE 21 8 results ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round ATENOLOL 100 MG TABLET Side 1: RE 21 Color: White Side 2: Shape: Round Other Popular Drug Imprint RG 10 307 Z340 40 mg 44 397 T31 IP 466 TUMS M121 115 W 150 logo and 4444 TL 177 C83 Rifampin 300 2L or 10LA SC 800 3138 logo and 1810 54 421 ML 70 logo SANDOZ 651 logo and 2848 SZ 135 84 L344 93 711 PH 043 MP 201 S Z 106 826 D 95 P20 Advil 303 UM 10 or 20 MYLAN 5420 NTBC 5 mg RD 54