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 F22 G74 R 158 or 54 312 or GG849 T569 or B6 BACTRIM F 76 NT 54 793 WELLBUTRIN XL 150 R 200 K3 1204 KU 129 HYDREA 830 EP 137 659 FR VP059 AN 511 EK 25 2101 BI 6 M RN2 468 A A 1 1 MYLAN FE 67 NT6 WPI 100 54 299 740 62 D ENL Nitro-Dur 0.6 mg/hr RE 20 L NL C B 3 10 or 20 54 527