Pill Identification by Imprints: D21 Home Pill Identification by Imprints: D21 1 result DOXYCYCLINE MONO 50 MG TABLET Side 1: M Color: Light Yellow Side 2: D21 Shape: Round Other Popular Drug Imprint 1427 E 129 VM I-Caps CP 100 ex-lax Z12 logo and 64 M 45 L 179 logo and 4405 C17 M 15 FP650 RH38 IP 78 W 1035 EL WPI 845 LCI 1337 G 223 AL 21 M GP5 PAD 0106 CTI 143 Z 3926 logo and NR U31 LASER 360 C 16 PAXIL S 901 1307 U26 WATSON 384 or WATSON 7.5 CL 76 5030 UPSHER-SMITH 0226 A1 or A2