Pill Identification by Imprints: OBX Home Pill Identification by Imprints: OBX 2 results OBSTETRIX EC CAPLET Side 1: OBX Color: Yellow Side 2: Shape: Oval OBTREX DHA PRENATAL VITAMIN Side 1: OBX Color: Multi-Color (2) Side 2: Shape: Oval Other Popular Drug Imprint ROBAXIN 500 M X logo and S12 UT 2.5 ANDRX 605 600 P1 13 33 NALFON 400 mg OS 304 ZGNX 30 mg ZA-46 THIS END UP NL 620 logo and 667 C5 or C2 A333 AC356 DYRENIUM 50 mg cor 215 G451 logo and 4356 HP45 715 M32 339 U-S 125 242 Z or M 8I P295 16 L 301 CL63 RI19 P 300 C 11 Respa EZ FE 10 XL D 50