Dimetindene
Dimetindene Uses, Dosage, Side Effects, Food Interaction and all others data.
Dimetindene (Fenistil) is an antihistamine/anticholinergic used orally and locally as an antipruritic.
Dimethindene occurs as a racemic mixture. The (S)-(+)-dimethindene is a potent M2-selective muscarinic receptor antagonist (with lower affinity for M1, M3, and M4 muscarinic receptors). The (R)-(-)-enantiomer is the eutomer (responsible for bioactivity) for histamine H1 receptor binding.
| Trade Name | Dimetindene |
| Generic | Dimetindene |
| Dimetindene Other Names | Dimethindene, Dimetindene, Dimetindeno |
| Type | |
| Formula | C20H24N2 |
| Weight | Average: 292.418 Monoisotopic: 292.193948778 |
| Groups | Approved, Investigational |
| Therapeutic Class | |
| Manufacturer | |
| Available Country | |
| Last Updated: | September 19, 2023 at 7:00 am |
Uses
Dimetindene is a 1st generation selective H1 antagonist used topically as an antipruritic and orally to treat allergies.
Indicated as symptomatic treatment of allergic reactions: urticaria, allergies of the upper respiratory tract such as hey fever and perennial rhinitis, food and drug allergies; pruritus of various origins, except pruritus due to cholestasis; insect bites. Dimethindene is also indicated for pruritus in eruptive skin diseases such as chicken-pox. Dimethindene can also be used as an adjuvant in eczema and other pruriginous dermatoses of allergic origin.
Dimetindene is also used to associated treatment for these conditions: Acute Sinusitis, Allergies, Anaphylaxis, Anaphylaxis caused by Anaesthesia therapy, Chronic Rhinitis, Chronic Sinusitis, Middle ear inflammation, Nasal Congestion, Rhinitis, Rhinorrhoea, Sinusitis, Acute Rhinitis
How Dimetindene works
Dimethindene is a selective histamine H1 antagonist and binds to the histamine H1 receptor. This blocks the action of endogenous histamine, which subsequently leads to temporary relief of the negative symptoms brought on by histamine.
Toxicity
As with other antihistaminic drugs, overdosage can produce the following symptoms: CNS depression accompanied by drowsiness (especially in adults), CNS stimulation and antimuscarinic effects (especially in children) including the following: excitation, ataxia, hallucinations, tonic or clonic spasms, mydriasis, dryness of the mouth, redness of the face, urine retention, fever and tachycardia. Blood hypotension is also possible. In its terminal phase, coma can be aggravated by cardiorespiratory colapse and death. There has been no report of a fatal outcome of Dimethindene overdosage.
Innovators Monograph
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