i would probably be carefull with those charcoal biscuits because burnt food is known to be cancerous. I'm sure the odd one or two to help with bloating every now and then would be fine but i wouldn't have thought they would be a good long term option
just my opinion...
hi i tired charcol tablets and they did nothing, and yes they looks funny, i broke one in half and loads of grey charchol i guess came out! they did me no harm but did me no help either. but there is no harm in tyring!!they are yummy really!!