The World Health Organization's ATC classification organizes medical drugs based on therapeutic properties, chemical composition, and anatomy. It helps make essential medicines readily available globally and is widely used in the pharmaceutical industry.
| Level | Code | Title | |
|---|---|---|---|
| 1 | R | Respiratory system | |
| 2 | R06 | Antihistamines for systemic use | |
| 3 | R06A | Antihistamines for systemic use | |
| 4 | R06AB | Substituted alkylamines | |
| 5 | R06AB02 | Dexchlorpheniramine |
The DDD is the assumed average maintenance dose per day for a drug used for its main indication in adults. The DDD is a unit of measurement and does not necessarily reflect the recommended or Prescribed Daily Dose. Therapeutic doses for individual patients and patient groups will often differ from the DDD as they will be based on individual characteristics (such as age, weight, ethnic differences, type and severity of disease) and pharmacokinetic considerations.
| Route | Amount |
|---|---|
| ORAL - Oral | 6 mg |
| PAREN - Parenteral | 6 mg |
| Active Ingredient | Description | |
|---|---|---|
| Dexchlorpheniramine |
Dexchlorpheniramine, the d-isomer of the racemic compound chlorpheniramine, is two times more active than chlorpheniramine. Dexchlorpheniramine does not prevent the release of histamine, but rather, competes with free histamine for binding at the H1-receptor sites, and competitively antagonizes the effects of histamine on H1-receptors in the GI tract, uterus, large blood vessels, and bronchial muscle. Blockade of H1-receptors also suppresses the formation of oedema, flare, and pruritus that result from histaminic activity. Since dexchlorpheniramine binds to central and peripheral H1-receptors, sedative effects are likely to occur. Dexchlorpheniramine has high antihistaminic activity, moderate anticholinergic effects and minimal sedative effects. |
| Title | Information Source | Document Type | |
|---|---|---|---|
| PIRITON Tablet | Medicines & Healthcare Products Regulatory Agency (GB) | MPI, EU: SmPC |
Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide.
