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 ULTRAM 01030 APO 019 E300 NTBC 20 mg 737 logo and 325 DYRENIUM 50 mg 93 832 SZ 439 E 13 44-346 PRO ibr 140mg M D10 H569 5mg M 753 E 56 #L 001 H 103 MYLAN 3125 260 RIL S 6 E 123 H 602 ANAFRANIL 25 mg AN 735 MP 659 AR 102 VALPROIC 250 CP 403 M C1 VALTREX 500 mg MYLAN 7096 ZD 15 2 55 93 27 ML-P16