D-67

For emergency treatment of poisoning, the standard adult dose typically ranges from 25 to 100 grams administered as a single dose. If multiple-dose activated charcoal (MDAC) is required for specific toxins (like theophylline or carbamazepine), your healthcare provider may administer 12.5 to 25 grams every 2 to 4 hours.

• Infants (up to 1 year): 10 to 25 grams or 0.5–1.0 g/kg.
• Children (1 to 12 years): 25 to 50 grams or 0.5–1.0 g/kg.
• Adolescents: Same as adult dosing (25 to 100 grams).

Renal Impairment

Since Activated Charcoal is not systemically absorbed or renally excreted, no dosage adjustment is typically required for patients with kidney disease. However, fluid balance must be monitored.

Hepatic Impairment

No dosage adjustment is necessary for patients with liver impairment as the drug does not undergo hepatic metabolism.

Elderly Patients

Older adults may be more prone to constipation; healthcare providers may consider lower initial doses or the co-administration of a cathartic (laxative).

Activated Charcoal is most effective when taken within 60 minutes of a toxic ingestion. For oral suspensions, the bottle must be shaken vigorously before use. It can be taken with or without food, but food may reduce its adsorptive capacity for the intended toxin. It should be stored at room temperature, away from moisture and heat.

In an emergency setting, a missed dose is handled by medical staff. For over-the-counter use, if you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and resume your regular schedule. Do not double the dose.

An overdose of Activated Charcoal is rare but can lead to severe constipation or bowel obstruction. Symptoms include severe abdominal pain, bloating, or vomiting. In case of suspected overdose, seek emergency medical attention or contact a Poison Control Center immediately.

> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose without medical guidance.

• Black Stools: This is a harmless and expected side effect as the charcoal passes through the digestive tract.
• Constipation: Activated Charcoal can slow down bowel movements and harden the stool.
• Nausea and Vomiting: Some patients find the texture or taste of the suspension difficult to tolerate.

• Diarrhea: More common if the formulation contains sorbitol.
• Abdominal Cramping: A feeling of fullness or mild pain in the stomach area.

• Bowel Obstruction: A blockage in the intestine that prevents stool from passing.
• Gastrointestinal Perforation: A rare but serious hole in the stomach or intestinal wall.

> Warning: Stop taking Activated Charcoal and call your doctor immediately if you experience any of these.

• Aspiration: If the charcoal is inhaled into the lungs, it can cause severe respiratory distress or pneumonia.
• Severe Dehydration: Indicated by extreme thirst, dark urine, or dizziness, especially if taken with laxatives.
• Intestinal Blockage: Symptoms include severe bloating, inability to pass gas, and intense abdominal pain.
• Allergic Reaction: Signs include hives, difficulty breathing, or swelling of the face, lips, and throat.

Activated Charcoal is generally not intended for long-term use. Prolonged use can lead to malnutrition because the charcoal may adsorb essential vitamins, minerals, and enzymes from the diet, preventing their absorption into the body.

No FDA black box warnings currently exist for Activated Charcoal. However, it is strictly contraindicated in patients with an unprotected airway or those who have ingested corrosive substances.

Report any unusual symptoms to your healthcare provider.

Activated Charcoal is a specialized treatment that should primarily be used under the direction of a healthcare professional or poison control center. It is not effective for all types of poisonings, particularly those involving alcohols, cyanide, or heavy metals like iron and lithium.

No FDA black box warnings for Activated Charcoal.

• Aspiration Risk: There is a significant risk of pulmonary aspiration (charcoal entering the lungs) in patients with a diminished level of consciousness. Healthcare providers must ensure the airway is protected before administration.
• Gastrointestinal Hemorrhage: Use with caution in patients with a history of recent GI bleeding or surgery.
• Electrolyte Imbalance: Formulations containing sorbitol can lead to rapid fluid loss and electrolyte shifts, particularly in pediatric patients.
• Corrosive Ingestions: Do not use Activated Charcoal if the patient has ingested corrosive agents (like lye or strong acids), as it may obscure the view during an endoscopy (a procedure to look inside the body).

Patients receiving Activated Charcoal should be monitored for:

• Bowel Sounds: To ensure the charcoal is moving through the digestive tract.
• Hydration Status: Monitoring for signs of dehydration.
• Electrolyte Levels: Especially sodium and potassium if laxatives are used.

Activated Charcoal generally does not affect the ability to drive or operate machinery. However, if the underlying poisoning causes dizziness or lethargy, these activities should be avoided.

Alcohol (ethanol) can decrease the adsorptive capacity of Activated Charcoal. Furthermore, Activated Charcoal is not an effective treatment for alcohol poisoning.

For emergency use, Activated Charcoal is typically a single-dose treatment. No tapering is required. If used for other conditions, consult your doctor before stopping.

> Important: Discuss all your medical conditions with your healthcare provider before starting Activated Charcoal.

• Ipecac Syrup: If used together, Activated Charcoal will adsorb the ipecac, preventing it from inducing vomiting, and the ipecac may cause the patient to vomit the charcoal.

• Digoxin: Activated Charcoal can significantly reduce the absorption of digoxin, leading to subtherapeutic levels and reduced heart rate control.
• Theophylline: While charcoal is used to treat theophylline overdose, it will also reduce the efficacy of theophylline if taken for asthma or COPD.
• Acetaminophen: Charcoal binds acetaminophen; while useful in an overdose, it can interfere with the therapeutic use of the drug.

• Oral Contraceptives: Activated Charcoal may adsorb birth control hormones, potentially leading to contraceptive failure. Patients should use a backup method of birth control during and for 7 days after charcoal use.
• Antiepileptic Drugs (e.g., Phenytoin, Carbamazepine): Charcoal can lower the blood levels of these medications, increasing the risk of seizures.

• Dairy Products: Milk, ice cream, or chocolate syrup can significantly reduce the adsorptive capacity of Activated Charcoal. It is best administered with water.

• Multivitamins: Activated Charcoal will bind to both fat-soluble (A, D, E, K) and water-soluble vitamins, preventing their absorption.
• St. John's Wort: May be adsorbed, reducing its efficacy for mood regulation.

Activated Charcoal does not typically interfere with blood laboratory tests, but its presence in the stool will interfere with stool guaiac tests (tests for hidden blood in the stool).

> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking.

• Unprotected Airway: Patients who are unconscious or have a depressed gag reflex should not receive oral charcoal unless they are intubated, due to the risk of fatal aspiration.
• Gastrointestinal Obstruction: Because charcoal causes constipation, it can worsen a pre-existing blockage.
• Perforated Bowel: Charcoal can leak into the peritoneal cavity, causing severe inflammation (peritonitis).
• Ingestion of Corrosives: Using charcoal after ingesting strong acids or alkalis prevents doctors from performing an endoscopy to assess tissue damage.

• Decreased Peristalsis: Patients with slow gut motility require careful monitoring to prevent charcoal impaction.
• Recent Surgery: Recent abdominal surgery may increase the risk of GI complications.

There are no known cross-sensitivities between Activated Charcoal and other pharmacological agents, as it is an elemental form of carbon.

> Important: Your healthcare provider will evaluate your complete medical history before prescribing Activated Charcoal.

FDA Pregnancy Category: Not Formally Assigned. Since Activated Charcoal is not absorbed systemically, it is generally considered safe for use during pregnancy when clinically indicated for poisoning. It does not reach the fetus. However, it should only be used under strict medical supervision to avoid maternal dehydration or electrolyte imbalance.

Activated Charcoal is not absorbed into the mother's bloodstream and therefore cannot pass into breast milk. It is considered compatible with breastfeeding. No effects on the nursing infant are expected.

Activated Charcoal is safe and effective for children when used for acute poisoning. However, the risk of aspiration and electrolyte imbalance (if used with sorbitol) is higher in children. It is not recommended for infants under 1 year of age without direct medical oversight.

Elderly patients are at a higher risk for constipation and fecal impaction. Healthcare providers should monitor bowel movements closely. There is no evidence that age-related changes in kidney or liver function affect charcoal's efficacy, as it remains in the gut.

No dosage adjustment is required. Activated Charcoal does not enter the blood and is not filtered by the kidneys.

No dosage adjustment is required. The liver is not involved in the clearance of Activated Charcoal.

> Important: Special populations require individualized medical assessment.

Activated Charcoal acts as a non-specific adsorbent. Its primary molecular mechanism involves the binding of various organic and inorganic compounds to its surface via Van der Waals forces. The "activation" process (heating carbon in the presence of an oxidizing gas) creates a network of pores ranging from 10 to 1000 Ångströms. This increases the surface area to approximately 1000 square meters per gram. Additionally, the provided data indicates it may act as an Ammonium Ion Binding Agent and interact with Adrenergic alpha and beta receptors in specific clinical extracts.

• Onset: Immediate upon contact with the stomach contents.
• Duration: Continues as long as the charcoal remains in the gastrointestinal tract.
• Dose-Response: The effectiveness is highly dependent on the charcoal-to-toxin ratio, with a 10:1 ratio usually considered optimal for maximal adsorption.

| Parameter | Value |

|---|---|

| Bioavailability | 0% (Not absorbed) |

| Protein Binding | 0% |

| Half-life | N/A (Not systemic) |

| Tmax | N/A |

| Metabolism | None |

| Excretion | Fecal (100%) |

• Molecular Formula: C (Carbon)
• Molecular Weight: 12.011 g/mol
• Solubility: Insoluble in water, ethanol, and organic solvents.
• Description: A fine, black, odorless, and tasteless powder.

Activated Charcoal is classified as an Antidote/Adsorbent. It is also categorized as a Non-Standardized Plant Allergenic Extract [EPC] when used in diagnostic allergy testing.