The source of this homeopathic remedy is vegetable charcoal, made from beech, birch or poplar wood. Its main action is the removal of excess mucus from the digestive system. In the pre-pharmaceutical era vegetable charcoal was used to absorb gases and check fermentation.
Carbo veg. is most beneficial to people who complain of not having felt really well since a particular illness or accident. Mental sluggishness is one of the first symptoms they mention.