Pill Identification by Imprints: WATSON 583 Home Pill Identification by Imprints: WATSON 583 1 result PROPAFENONE HCL 225 MG TAB Side 1: WATSON 583 Color: White Side 2: Shape: Round Other Popular Drug Imprint W 29 AMBI 448 PX 4 AZ5 Nitroglycerin 0.4 mg/hr GM 4 M500 logo 355 ZC 75 G650 81 GS FC2 G 11 XM RJ73 NATCO 30 C 84 PROCARDIA XL 60 L123 E 12 E 10 25 41 81/40 MYLAN 3404 NL 276 GG 822 GAS-X 2471 PD barr 180 mg ZC 16 IP 466 ICN IX524 TL574 logo and Pamelor 10 mg GG 439 E3 or C2 FTY 0.25 mg