![]() Activated charcoal for medical use | |
Clinical data | |
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Trade names | CharcoAid, others |
AHFS/Drugs.com | Monograph |
Routes of administration | by mouth, nasogastric tube |
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CompTox Dashboard (EPA) | |
ECHA InfoCard | 100.036.697 |
Activated charcoal, also known as activated carbon, is a medication used to treat poisonings that occurred by mouth. [1] To be effective it must be used within a short time of the poisoning occurring, typically an hour. [1] [2] It does not work for poisonings by cyanide, corrosive agents, iron, lithium, alcohols, or malathion. [2] It may be taken by mouth or given by a nasogastric tube. [3] Other uses include inside hemoperfusion machines. [1]
Common side effects include vomiting, black stools, diarrhea, and constipation. [1] A more serious side effect, pneumonitis, may result if aspirated into the lungs. [1] [2] Gastrointestinal obstruction and ileus are less common but serious adverse effects. [1] Use in pregnancy and breastfeeding is generally safe. [3] Activated charcoal works by adsorbing the toxin. [1]
While charcoal has been used since ancient times for poisonings, activated charcoal has been used since the 1900s. [4] [5] It is on the World Health Organization's List of Essential Medicines. [6]
Activated charcoal is used to treat many types of oral poisonings such as phenobarbital and carbamazepine. [7] It is not effective for a number of poisonings including: strong acids or bases, iron, lithium, arsenic, methanol, ethanol or ethylene glycol. [7]
Although activated charcoal is the most commonly used agent for GI decontamination in poisoned patients, medical professionals use discretion when determining whether or not its use is indicated. [7] In a study of acute poisonings from agricultural pesticides and yellow oleander seeds, the administration of activated carbon did not affect survival rates. [8]
Charcoal biscuits were sold in England starting in the early 19th century, originally as remedy to flatulence and stomach trouble. [9]
Tablets or capsules of activated carbon are used in many countries as an over-the-counter drug to treat diarrhea, indigestion, and flatulence. [10] There is some evidence of its effectiveness to prevent diarrhea in cancer patients who have received irinotecan. [11] It can interfere with the absorption of some medications, and lead to unreliable readings in medical tests such as the guaiac card test. [12] Activated carbon is also used for bowel preparation by reducing intestinal gas content before abdominal radiography to visualize bile and pancreatic and renal stones. [13] A type of charcoal biscuit has also been marketed as a pet care product. [14]
Claims that activated charcoal will do things such as whiten teeth, cure alcohol-induced hangovers, and prevent bloating, are not supported by evidence. [15] [16] Activated charcoal cleanses also lack evidence and are considered pseudoscience. [17]
Incorrect application (e.g. into the lungs) results in pulmonary aspiration which can sometimes be fatal if immediate medical treatment is not initiated. [18] The use of activated carbon is contraindicated when the ingested substance is an acid, an alkali, or a petroleum product. [19]
Activated charcoal is biologically inert. When in the presence of some poisons, activated charcoal adsorbs the chemical onto its surface, rendering it unable to interact with the body. This is possible due to its high surface area compared to its volume. [1]
The use of charcoal as a medicinal product can be traced back to Egypt in 1500 BC, where it was used to neutralise bad odours from wounds. By 400 BC, the Phoenicians used charcoal to improve the taste of water stored on ships by containing the water in charred barrels, indicating that an understanding of charcoal's ability to adsorb undesirable chemicals was present by this time. Activated charcoal in its current form was developed during the 18th century, first being used during the sugar refining process to remove coloured impurities from raw sugar. [20] Medical use of activated charcoal commenced in the early 19th century; an often-cited experiment demonstrating its properties was carried out in 1835, where a dosage of strychnine mixed with activated charcoal resulted in no symptoms of poisoning being observed. [21]
Flatulence is the expulsion of gas from the intestines via the anus, commonly referred to as farting. "Flatus" is the medical word for gas generated in the stomach or bowels. A proportion of intestinal gas may be swallowed environmental air, and hence flatus is not entirely generated in the stomach or bowels. The scientific study of this area of medicine is termed flatology.
Atropine is a tropane alkaloid and anticholinergic medication used to treat certain types of nerve agent and pesticide poisonings as well as some types of slow heart rate, and to decrease saliva production during surgery. It is typically given intravenously or by injection into a muscle. Eye drops are also available which are used to treat uveitis and early amblyopia. The intravenous solution usually begins working within a minute and lasts half an hour to an hour. Large doses may be required to treat some poisonings.
An antidote is a substance that can counteract a form of poisoning. The term ultimately derives from the Greek term φάρμακον ἀντίδοτον (pharmakon antidoton), "(medicine) given as a remedy". Antidotes for anticoagulants are sometimes referred to as reversal agents.
Strychnine is a highly toxic, colorless, bitter, crystalline alkaloid used as a pesticide, particularly for killing small vertebrates such as birds and rodents. Strychnine, when inhaled, swallowed, or absorbed through the eyes or mouth, causes poisoning which results in muscular convulsions and eventually death through asphyxia. While it is no longer used medicinally, it was used historically in small doses to strengthen muscle contractions, such as a heart and bowel stimulant and performance-enhancing drug. The most common source is from the seeds of the Strychnos nux-vomica tree.
Activated carbon, also called activated charcoal, is a form of carbon commonly used to filter contaminants from water and air, among many other uses. It is processed (activated) to have small, low-volume pores that greatly increase the surface area available for adsorption or chemical reactions that can be thought of as a microscopic "sponge" structure. Activation is analogous to making popcorn from dried corn kernels: popcorn is light, fluffy, and its kernels have a high surface-area-to-volume ratio. Activated is sometimes replaced by active.
Griseofulvin is an antifungal medication used to treat a number of types of dermatophytoses (ringworm). This includes fungal infections of the nails and scalp, as well as the skin when antifungal creams have not worked. It is taken by mouth.
Ergometrine, also known as ergonovine and sold under the brand names Ergotrate, Ergostat, and Syntometrine among others, is a medication used to cause contractions of the uterus to treat heavy vaginal bleeding after childbirth. It can be used either by mouth, by injection into a muscle, or injection into a vein. It begins working within 15 minutes when taken by mouth and is faster in onset when used by injection. Effects last between 45 and 180 minutes.
Vinorelbine (NVB), sold under the brand name Navelbine among others, is a chemotherapy medication used to treat a number of types of cancer. This includes breast cancer and non-small cell lung cancer. It is given by injection into a vein or by mouth.
Etoposide, sold under the brand name Vepesid among others, is a chemotherapy medication used for the treatments of a number of types of cancer including testicular cancer, lung cancer, lymphoma, leukemia, neuroblastoma, and ovarian cancer. It is also used for hemophagocytic lymphohistiocytosis. It is used by mouth or injection into a vein.
Irinotecan, sold under the brand name Camptosar among others, is an anti-cancer medication used to treat colon cancer and small cell lung cancer. For colon cancer it is used either alone or with fluorouracil. For small cell lung cancer it is used with cisplatin. It is given intravenously.
Bamboo charcoal is charcoal made from species of bamboo. It is typically made from the culms or refuse of mature bamboo plants and burned in ovens at temperatures ranging from 600 to 1200 °C. It is an especially porous charcoal, making it useful in the manufacture of activated carbon.
Pretomanid is an antibiotic medication used for the treatment of multi-drug-resistant tuberculosis affecting the lungs. It is generally used together with bedaquiline and linezolid. It is taken by mouth.
Human feces are the solid or semisolid remains of food that could not be digested or absorbed in the small intestine of humans, but has been further broken down by bacteria in the large intestine. It also contains bacteria and a relatively small amount of metabolic waste products such as bacterially altered bilirubin, and the dead epithelial cells from the lining of the gut. It is discharged through the anus during a process called defecation.
Charcoal is a lightweight black carbon residue produced by strongly heating wood in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, called charcoal burning, often by forming a charcoal kiln, the heat is supplied by burning part of the starting material itself, with a limited supply of oxygen. The material can also be heated in a closed retort. Modern charcoal briquettes used for outdoor cooking may contain many other additives, e.g. coal.
Salicylate poisoning, also known as aspirin poisoning, is the acute or chronic poisoning with a salicylate such as aspirin. The classic symptoms are ringing in the ears, nausea, abdominal pain, and a fast breathing rate. Early on, these may be subtle, while larger doses may result in fever. Complications can include swelling of the brain or lungs, seizures, low blood sugar, or cardiac arrest.
Intravenous sodium bicarbonate, also known as sodium hydrogen carbonate, is a medication primarily used to treat severe metabolic acidosis. For this purpose it is generally only used when the pH is less than 7.1 and when the underlying cause is either diarrhea, vomiting, or the kidneys. Other uses include high blood potassium, tricyclic antidepressant overdose, and cocaine toxicity as well as a number of other poisonings. It is given by injection into a vein.
A nasopharyngeal swab is a device used for collecting a sample of nasal secretions from the back of the nose and throat. The sample is then analyzed for the presence of organisms or other clinical markers for disease. This diagnostic method is commonly used in suspected cases of whooping cough, diphtheria, influenza, and various types of diseases caused by the coronavirus family of viruses, including SARS, MERS, and COVID-19.
Prussian blue, also known as potassium ferric hexacyanoferrate, is used as a medication to treat thallium poisoning or radioactive caesium poisoning. For thallium it may be used in addition to gastric lavage, activated charcoal, forced diuresis, and hemodialysis. It is given by mouth or nasogastric tube. Prussian blue is also used in the urine to test for G6PD deficiency.
Zinc sulfate is used medically as a dietary supplement. Specifically it is used to treat zinc deficiency and to prevent the condition in those at high risk. This includes use together with oral rehydration therapy for children who have diarrhea. General use is not recommended. It may be taken by mouth or by injection into a vein.
Activated charcoal cleanses, also known as charcoal detoxes, are a pseudoscientific use of a proven medical intervention. Activated charcoal is available in powder, tablet and liquid form. Its proponents claim the use of activated charcoal on a regular basis will detoxify and cleanse the body as well as boost one's energy and brighten the skin. Such claims violate basic principles of chemistry and physiology. There is no medical evidence for any health benefits of cleanses or detoxes via activated charcoal or any other method. Charcoal, when ingested, will absorb vitamins and nutrients as well as prescription medications present in the gastrointestinal tract which can make it dangerous to use unless directed by a medical doctor.