Prolonged-action eye drop

  • US 6,645,963 B2
  • Filed: 03/12/2001
  • Issued: 11/11/2003
  • Est. Priority Date: 11/05/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. An eye drop comprising 0.1 to 2 w/v % of a drug selected from the group consisting of carteolol, timolol betaxolol and a salt thereof, and 0.04 to 2 w/v % of a sorbic acid or a salt thereof, wherein the eye drop promotes penetration of the drug into an eye and improves retention time of the drug in ocular tissues by incorporation of sorbic acid or salt thereof.

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