Charcoal Eucarbon is used in the following cases: Treating stomach pain resulting from intestinal gases. Treating loss of appetite and constipation. Treating poisoning resulting from taking an overdose of some medications such as: Non-steroidal anti-inflammatory drugs. Calcium channel blockers. Antibiotics such as dapsone. Anticonvulsants such as carbamazepine. Mild stimulants such as methylxanthine. Antimalarial medicine. Sedatives.