Pill Identification by Imprints: HP 18 Home Pill Identification by Imprints: HP 18 2 results TETRACYCLINE 500 MG CAPSULE Side 1: HP 18 Color: Yellow Side 2: HP 18 Shape: Oblong TETRACYCLINE 500 MG CAPSULE Side 1: HP 18 Color: Yellow Side 2: HP 18 Shape: Oblong Other Popular Drug Imprint 0476 93 54 CNG1 SG 321 M S25 SCI 501 679 T1 200 45 78 RI18 V100 or V150 W 784 C 89 568 AZ 40 Tofranil-PM 125 mg CTI 223 93 3107 M161 229 229 PROVERA 10 L 64 VP049 ZZ A25 I 1 2130 I 27 54 688 SANKYO C01 0031 V 465 ONE A DAY 93 41 logo and 2838 93 5293 logo and 511 PA 917 P51 M 407