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 | D | Dermatologicals | |
| 2 | D04 | Antipruritics, incl. antihistamines, anesthetics, etc. | |
| 3 | D04A | Antipruritics, incl. antihistamines, anesthetics, etc. | |
| 4 | D04AA | Antihistamines for topical use | |
| 5 | D04AA32 | Diphenhydramine |
| Active Ingredient | Description | |
|---|---|---|
| Diphenhydramine |
Diphenhydramine is an ethanolamine-derivative antihistamine. It is an antihistamine with anticholinergic and marked sedative effects. It acts by inhibiting the effects on H1-receptors. Diphenhydramine is effective in reducing sleep onset (i.e., time to fall asleep) and increasing the depth and quality of sleep. |
| Title | Information Source | Document Type | |
|---|---|---|---|
| HISTERGAN Coated tablet | Medicines & Healthcare Products Regulatory Agency (GB) | MPI, EU: SmPC | |
| HISTERGAN Topical cream | 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.
