Pill Identification by Imprints: S4 Home Pill Identification by Imprints: S4 3 results CAPTOPRIL 100 MG TABLET Side 1: S4 Color: White Side 2: Shape: Round SUMATRIPTAN SUCC 25 MG TABLET Side 1: M Color: White Side 2: S4 Shape: Round SUMATRIPTAN SUCC 25 MG TABLET Side 1: M Color: White Side 2: S4 Shape: Round Other Popular Drug Imprint C533 TENCON FAM250 CL 78 RX 791 LILLY 4115 K 45 54 025 A-P 2 A67 38 T 10 SG 322 538 MYLAN TE 6 EXELON PATCH 9.5 mg/24 hours BHDI 44 452 RH MYLAN FE 200 CDT 251 M 137 E226 FENTANYL 100mcg/hr ZF 25 OGT 918 44 375 54 420 W W 1106 logo and 78 241 L417 e5 110 I32 AS+ SC 1 8 960 1222 C-122 logo and 13 9R