Pill Identification by Imprints: L2U4 Home Pill Identification by Imprints: L2U4 2 results GS CAL ANTACID 750 MG CHEW TAB Side 1: L2U4 Color: Assorted Side 2: Shape: Round HM CAL ANTACID 750 MG CHEW TAB Side 1: L2U4 Color: Assorted Side 2: Shape: Round Other Popular Drug Imprint C272 U29 S 4 C7 E 42 E3 or C2 L977 cor 188 US 14 West-ward 450 ZD 16 XR 50 IT 68 BI V223 G 4910 M 515 Z 4236 MgO EL UPSHER-SMITH NB-890 logo and 352 CITRACAL WATSON I 22 286 nitroglycerin 0.2 mg/hr 5271 93 44 235 1205 2775 C223 T 21 ZA47 cardizem CD 180 mg .7 L 301 CP 100 M136