Medium quality ingredient - nutritionally adequate and unlikely to cause any problems
Charcoal in dog food
Charcoal absorbs excess gas and is often recommended for relieving wind and bloating in dogs. Unlike charcoal for barbeques, the edible form must be 'activated' with high temperatures and steam before it can be eaten. Activated charcoal can come from a number of sources including wood, coconut shells, peat and bamboo.