Activated charcoal, also known as activated carbon, can sometimes be useful to administer in certain cases of poisoning or drug overdose. It is known for its ability to absorb and remove certain poisons, heavy metals, drugs, chemicals, and intestinal gases from the bird's gastrointestinal tract. Activated charcoal itself is a fine, black powder that is odorless, tasteless, and nontoxic. The charcoal is "activated" because it is produced to have a very fine particle size. This increases the overall surface area and absorptive capacity of the charcoal. Activated charcoal can be given to birds orally with a gavage tube.