Loratadine

from source

C22H23ClN2O2 · 382.9 g/mol

Alavert · Bonalerg · Claritin · Claritine

Also sold as Claritin, Alavert from source

What is Loratadine?

The non-drowsy allergy antihistamine sold as Claritin, taken for hay fever and hives. Loratadine (C22H23ClN2O2, 383 g/mol) is an over-the-counter medicine sold over the counter. from source

CategoryOTC medicine

Chemical familyAromatics Esters Halogenated

LeaderboardsBiggest Deadliest

Fig. 1 · 2D structure RDKit

SMILESCCOC(=O)N1CCC(=C2C3=C(CCC4=C2N=CC=C4)C=C(C=C3)Cl)CC1

Where you'll find it

Sold over the counter, without a prescription. Sold as Claritin, Alavert. See the rest of the otc medicine group.

Relative acute toxicity from source

Animal study data · LD50

Reported LD50: 5,000 mg/kg · very low toxicity
Species: rat
Route: oral

An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.

Toxicity & hazards

Toxicity · LD50

5,000 mg/kg · very low toxicity · LD50 rat oral from source

1 more reported value

5,000 mg/kgLD50 · oral · mouse

DangerIrritantHealth hazardEnvironmentalH315, H317, H319, H335, H341, H351, H360, H361, H362, H400, H410from source

Compare with

Loratadine vs Cetirizine Loratadine vs Diphenhydramine

Sources & methodology

PubChem CID: 3957
Wikidata: Q424049
Structure: PubChem → RDKit
LD50: PubChem
Data refreshed: October 19, 2026

How MoleculeFinder sources and labels its data