Pill Identification by Imprints: 5550 Home Pill Identification by Imprints: 5550 1 result DEXMETHYLPHENIDATE ER 5 MG CAP Side 1: TEVA Color: Aqua Blue Side 2: 5550 Shape: Oblong Other Popular Drug Imprint 21 I3 292 or 293 SLC 224 FE1 logo AB DSC L15 M X FL 145 NL C Z12 E 1217 Z18 K 100 S 21 1335 A92 cor 188 MCR 109 625 ST 300 Macrobid Z10 ULTRAM BL 04 M 030 R DY ALEVE COLD&SINUS SL 25 332 RH 391 MAXINATE A66 93 63 HP 61 logo and 4358 TUMS B911 AV1