Submicron emulsions as ocular drug delivery vehicles
First Claim
1. An ocular drug delivery vehicle of an oil-in-water submicron emulsion consisting essentially of about 0.5 to 50% of a first component of an oil, about 0.1 to 10% of a second component of an emulsifier, comprising a phospholipid, about 0.05 to 5% of a non-ionic surfactant and an aqueous component, said submicron emulsion having a mean droplet size in the range of 0.05 to 0.5 μ
- m, and a weight ratio of surfactant to oil of about 1;
1 or less.
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Abstract
An ocular drug delivery vehicle of an oil-in-water submicron emulsion comprising about 0.5 to 50% of a first component of an oil, about 0.1 to 10% of a second component of an emulsifier, about 0.05 to 5% of a non-ionic surfactant and an aqueous component, with the mean droplet size being in the submicron range, i.e., below about 0.5 μm and preferably between about 0.1 and 0.3 μm. Also, topical pharmaceutical compositions containing a drug such as an anti-glaucoma drug, beta adrenergic blocker or other autonomic system drug, a local anesthetic, a steroid, a non-steroidal anti-inflammatory drug, an antibiotic drug, an antifungal drug, an antiviral drug or combinations thereof and the vehicle described above. Methods of administering such vehicles or compositions to the eye of a patient while reducing irritation thereof and providing increased bioavailability of the drug.
73 Citations
37 Claims
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1. An ocular drug delivery vehicle of an oil-in-water submicron emulsion consisting essentially of about 0.5 to 50% of a first component of an oil, about 0.1 to 10% of a second component of an emulsifier, comprising a phospholipid, about 0.05 to 5% of a non-ionic surfactant and an aqueous component, said submicron emulsion having a mean droplet size in the range of 0.05 to 0.5 μ
- m, and a weight ratio of surfactant to oil of about 1;
1 or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 23, 24, 25, 26, 29, 30, 35, 36)
- m, and a weight ratio of surfactant to oil of about 1;
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12. A topical ophthalmic composition comprising an effective amount of an ophthalmic drug and an ocular drug delivery vehicle consisting essentially of about 0.5 to 50% of a first component of an oil, about 0.1 to 10% of a second component of an emulsifier, comprising a phospholipid, about 0.05 to 5% of a non-ionic surfactant and an aqueous component, said submicron emulsion having a mean droplet size in the range of 0.05 to 0.5 μ
- m, and a weight ratio of surfactant to oil of about 1;
1 or less. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 27, 28, 31, 32, 33, 34, 37)
- m, and a weight ratio of surfactant to oil of about 1;
Specification