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 EVK GG 53 NPR EC 375 IP 178 L7 S252 DO or DP M 171 ED 200 ZF 25 GM 1 18 IPX066 ALG 263 MYLAN G1 P 80 logo and 2778 RG 11 MYLAN 257 268 GG C9 logo and 2578 2.5/500 barr 180 mg T558 M 47 L498 TF TF 54 193 A87 INT J 050 Watson 369 GG 78 143 54 315 C 89 LCI 1353 1122 1122 SANDOZ 625