What it does
Coal is used in medicine to help treat poisoning and certain digestive issues.
Commonly used for: poisoning (toxicity), digestive problems
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Source: Pharmacy and Medicines Regulatory Authority · fetched 2026-04-21 17:37:38 · updated 2026-09-29 04:33:03
About coal
Coal is used in medicine to help treat poisoning and certain digestive issues.
What it treats
- poisoning (toxicity)
- digestive problems
How it works
Coal works by binding to toxins in the stomach, preventing their absorption into the body.
Who it's for
Coal is suitable for people experiencing certain types of poisoning or digestive disturbances.
Cautions
- • Consult a healthcare provider before use, especially if you have other medical conditions.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About tar
Tar is a topical treatment used for skin conditions.
What it treats
- psoriasis
- eczema
- dandruff
How it works
Tar helps to reduce inflammation and slow down the growth of skin cells, which can relieve symptoms.
Who it's for
This treatment is suitable for adults and children with certain skin conditions.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
Clinical monograph: coal
Coal is a naturally occurring mineral substance composed primarily of carbon, along with various other elements and compounds. It is primarily known for its use as a fuel source and in industrial applications. In medicine, activated charcoal, derived from carbonaceous materials like coal, is used as an adsorbent to treat poisonings and overdoses by binding to toxins in the gastrointestinal tract, preventing their absorption into the bloodstream.
Indications
- Acute poisoning
- Drug overdose
- Gastrointestinal decontamination
Dosage
Children: For children, the usual dose is 1 gram per kilogram of body weight, up to a maximum of 50 grams, administered orally. Always refer to specific guidelines for pediatric dosing.
Adults: The usual adult dose of activated charcoal is 50 to 100 grams administered orally, typically given within one hour of ingestion of the toxin. If the toxin is sustained-release, multiple doses may be required.
Mechanism of action
Activated charcoal works by adsorbing a wide range of drugs and toxins in the gastrointestinal lumen. The porous structure of activated charcoal increases its surface area, allowing it to bind various substances effectively. This prevents absorption through the gastrointestinal tract and facilitates the elimination of the bound substances through fecal excretion.
Pharmacodynamics
Activated charcoal reduces the bioavailability of various medications and toxins by binding them, effectively decreasing their systemic absorption and potential toxicity. The adsorption capacity depends on factors such as surface area, particle size, and the chemical nature of the substance being adsorbed.
Pharmacokinetics
Activated charcoal is not absorbed into the body, and its action is entirely dependent on its adsorption properties in the gastrointestinal tract. It passes through the gastrointestinal system largely unchanged and is eliminated in the feces. Its effects are generally immediate upon administration, and it is typically administered as a single dose unless multiple doses are indicated.
Adverse effects
- Constipation
- Black stools
- Abdominal discomfort
- Nausea
Interactions
- May reduce the absorption of certain medications, including digoxin and warfarin, due to its adsorptive properties
Precautions
- Use with caution in patients with gastrointestinal disorders
- Monitor for potential interactions with medications
Pregnancy
Coal is classified as a category C drug, meaning risk cannot be ruled out. Consult healthcare professionals for advice.
Breast-feeding
Limited information is available; consult healthcare professionals for advice before use.
Storage
Store in a cool, dry place, away from direct sunlight and moisture.
Formulations
- Oral tablets
- Powder
- Suspension
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
This drug in other countries
The same active ingredient registered across other registries we cover - including different brands.