Pill Identification by Imprints: NT6 Home Pill Identification by Imprints: NT6 1 result THEOPHYLLINE ER 600 MG TABLET Side 1: NT6 Color: White Side 2: Shape: Oblong Other Popular Drug Imprint L 36 836 G 5008 logo and 2407 C F 5897 ZF 43 logo and 123 SL 456 RX905 V356 T582 A 20 89 C1 or C2 or C3 or P 5687 603 KU 260 RP 867 M U13 S553 SZ 210 POT 40 RX3341 81/40 RE 75 P291 2101 VP and logo Ziks631 1207 logo and 40 SANDOZ 572 EP 114 311 CL50 B or 0832 35 86 FENTANYL 1200 S10