Pill Identification by Imprints: M 1820 Home Pill Identification by Imprints: M 1820 1 result METHYLPHENIDATE ER 20 MG CAP Side 1: M 1820 Color: Medium Blue Side 2: 20 mg Shape: Oblong Other Popular Drug Imprint MYLAN 6202 VBZ 40 AHI 4 M455 Lilly 3238 MSD 749 MYLAN AC I 02 logo and 4359 Alavert 341 455 186 UNISOM 332 RX 526 M 70 COR 124 96 86 J1 ZA-35 54 656 569 547 m 50 ZC38 7 99 logo and 3062 Onset M050 Neurontin 300 mg ZL 1 logo and NT R180 logo 673 93 5297 155 TL 383 S 368 EC-NAPROSYN logo and 87