Olopatadine

Olopatadine hydrochloride is an antihistamine (as well as anticholinergic and mast cell stabilizer), sold as a prescription eye drop (0.2% solution, Pataday (or Patanol S in some countries), manufactured by Alcon). It is used to treat itching associated with allergic conjunctivitis (eye allergies). Olopatadine hydrochloride 0.1% is sold as Patanol...
Found on http://en.wikipedia.org/wiki/Olopatadine

olopatadine

(o″lo-pat´ә-dēn) a histamine H1 receptor antagonist used as the hydrochloride salt in the topical treatment of allergic conjunctivitis.
Found on http://www.encyclo.co.uk/local/21001
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