Each Hard Geletin Capsule Coantain: Activated Charcoal USP .......260mg Excipient ..................q.s. Approved colour of Empty Hard Geltin capsules used. Activated charcoal Capsules made of wood charcoal are classic antiflatulents which absorbs & adsorbs gas from G.I. tract due to its excellent adsorptive powers. It is available in 260mg.