Generic
Desloratadine
64 brands available in the market
At a glance
Desloratadine is an antihistamine used for the relief of symptoms associated with seasonal and perennial allergic rhinitis and chronic idiopathic urticaria.
Description
Desloratadine, the major active metabolite of Loratadine, is a non-sedating, long acting tricyclic histamine antagonist with selective H1-receptor histamine antagonist activity. Desloratadine also inhibits histamine release from human mast cell.
Indications
- Seasonal and perennial allergic rhinitis (sneezing, nasal discharge, itching, congestion, ocular itching, tearing, redness)
- Chronic idiopathic urticaria (hives, itching)
Therapeutic class
Non-sedating antihistamines
Pharmacological class
Non-sedating Antihistamine (H1-antagonist)
Pharmacology
Desloratadine, the major active metabolite of Loratadine, is a non-sedating, long acting tricyclic histamine antagonist with selective H1-receptor histamine antagonist activity. Desloratadine also inhibits histamine release from human mast cell.
Mechanism of action
Desloratadine blocks histamine action at peripheral H1-receptors, relieving allergy symptoms such as itching, swelling, and rashes, and reduces pro-inflammatory mediator release from mast cells.
Dosage
Adults & ≥12 years: 5 mg once daily.
Children 6-11 years: 2.5 mg (5 ml syrup) once daily.
Children 1-5 years: 1.25 mg (2.5 ml syrup) once daily.
Children 6-11 months: 1 mg (2 ml drops) once daily.
Hepatic or renal impairment: 5 mg every other day.
Administration
May be taken with or without food, but it is better to take it at a fixed time. Swallow the tablet whole, do not chew, crush or break.
Missed dose
If you miss a dose of Desloratadine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose. Do not double the dose.
Side effects
Common: Sleepiness, headache, nausea, fatigue, dizziness, pharyngitis, dyspepsia, myalgia.
Precautions & warnings
Caution while driving (dizziness, sleepiness may occur). Avoid alcohol (may cause excessive drowsiness). Stop at least 3 days before allergy testing. Caution in liver and kidney disease.
Contraindications
Hypersensitivity.
Drug interactions
Drugs affecting hepatic microsomal enzymes (azithromycin, cimetidine, erythromycin, fluoxetine, ketoconazole): May increase plasma concentrations.
Food interactions
It is unsafe to consume alcohol with Desloratadine (may cause excessive drowsiness).
Use in pregnancy
Pregnancy Category C. The safe use of Desloratadine during pregnancy has not been established. Should be used only if clearly indicated.
Pregnancy Category: C — always consult a doctor before taking during pregnancy.
Use in lactation
Desloratadine passes into breast milk. Because of its low milk levels and lack of sleepiness, use would not be expected to cause adverse effects in breastfed babies.
Pediatric use
Safety and effectiveness in children below 6 months have not been established.
Geriatric use
No specific dosage adjustment is necessary for elderly patients.
Renal / hepatic impairment
Renal impairment: Use with caution. Dose adjustment may be needed.
Hepatic impairment: Use with caution. Dose adjustment may be needed.
Overdose effects
No clinically relevant adverse effects have been reported.
Storage conditions
Store below 30°C in a cool & dry place, protected from light. Keep out of reach of children.
Chemical structure
Desloratadine