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Active ingredient: Olopatadine - Brands, Medical Use, Clinical Data

Brands, Medical Use, Clinical Data

Drug Category

  • Anti-allergic Agents
  • Anti-Inflammatory Agents, Non-Steroidal
  • Antihistamines
  • Histamine H1 Antagonists

Dosage Forms

  • Liquid

Brands / Synonyms

Olopatadine Hydrochloride; Patanol; Patanol


For the treatment of the signs and symptoms of allergic conjunctivitis.


Used to treat allergic conjunctivitis (itching eyes), olopatadine inhibits the release of histamine from mast cells. It is a relatively selective histamine H1 antagonist that inhibits the in vivo and in vitro type 1 immediate hypersensitivity reaction including inhibition of histamine induced effects on human conjunctival epithelial cells.

Mechanism of Action

Olopatadine 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. Olopatadine is devoid of effects on alpha-adrenergic, dopamine and muscarinic type 1 and 2 receptors.


Ophthalmic use of olopatadine usually does not produce measurable plasma concentrations.


Not Available

Biotrnasformation / Drug Metabolism

The mono-desmethyl and the N-oxide metabolites have been detected at low concentrations in the urine.


PATANOL (olopatadine hydrochloride ophthalmic solution) 0.1% is contraindicated in persons with a known hypersensitivity to olopatadine hydrochloride or any components of PATANOL.

Drug Interactions

No information provided.

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