Pill Identification by Imprints: G 421 Home Pill Identification by Imprints: G 421 3 results MIDODRINE HCL 2.5 MG TABLET Side 1: G 421 Color: White Side 2: Shape: Round MIDODRINE HCL 2.5 MG TABLET Side 1: G 421 Color: White Side 2: Shape: Round MIDODRINE HCL 2.5 MG TABLET Side 1: G 421 Color: White Side 2: Shape: Round Other Popular Drug Imprint MP 4 AT 262 U28 W 903 403 A-008 10 106 M 414 PAR 823 156 WW949 AN 515 M RN1 MAXZIDE ZC 59 VALTREX 1 gram logo and 159 fentanyl 800 mcg MYLAN 145 A7 J 75 ALKA SELTZER and logo ALV 317 TI 200 W961 DAN 3120 US 67 M P5 CP 150 I 25 SG 322 024 DYN-115 ML 44 200 or 400 E 54 REV T 50 AN 755 logo and 241