Suspensions of cyclosporin A form 2

1. A method of treating a condition selected from dry eye, blepharitis, meibomian gland disease, impaired corneal sensitivity, allergic conjunctivitis, atopic keratoconjunctivitis, vernal keratoconjunctivitis, and ptyregia, the method comprising the step of administering to a patient having such a condition a formulation comprising cyclosporin A form 2 and a vehicle, wherein the formulation is substantially free of other crystalline forms of cyclosporin A.

2. The method of claim 1 , wherein the vehicle comprises at least one surfactant and at least one stabilizer.

3. The method of claim 1 , wherein the cyclosporin A form 2 is at a concentration of about 0.01% (w/v) to about 10% (w/v).

4. The method of claim 2 , wherein the vehicle comprises one, two, three, four, five, or six surfactants each selected from the group consisting of polyoxyethylene (20) sorbitan monooleate, polyethylene glycol 660 hydroxystearate, polyoxyethylene (40) stearate, poloxamer 188, polyoxyethylene sorbitan monolaurate, and sodium glycocholate.

5. The method of claim 2 , wherein the vehicle comprises one, two, three, four, five, or six surfactants each selected from the group consisting of polyoxyethylene (20) sorbitan monooleate at a concentration of about 0.1% to about 5% (w/v), polyethylene glycol 660 hydroxystearate at a concentration of about 0.1% to about 5% (w/v), polyoxyethylene (40) stearate at a concentration of about 0.1% to about 5% (w/v), poloxamer 188 at a concentration of about 0.1% to about 5% (w/v), polyoxyethylene sorbitan monolaurate at a concentration of about 0.1% to about 5% (w/v), and sodium glycocholate at a concentration of about 0.1% to about 5% (w/v).

6. The method of claim 4 , wherein the vehicle comprises one, two, three, or four stabilizers each selected from the group consisting of hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxyethylcellulose, polyvinyl pyrolidone, and carboxymethylcellulose.

7. The method of claim 5 , wherein the vehicle comprises one, two, three, or four stabilizers each selected from the group consisting of hydroxypropyl cellulose at a concentration of about 0.1% to about 5% (w/v), hydroxypropylmethyl cellulose at a concentration of about 0.1% to about 5% (w/v), hydroxyethylcellulose at a concentration of about 0.1% to about 5% (w/v), and polyvinyl pyrolidone at a concentration of about 0.1% to about 5% (w/v), and carboxymethylcellulose at a concentration of about 0.1% to about 5% (w/v).

8. The method of claim 7 , wherein the vehicle further comprises one, two, three, four, five, six, seven, eight, or nine ingredients selected from glycerin, mannitol, crosslinked copolymers of acrylic acid and C10-C30 alkyl acrylate, sodium citrate dihydrate, potassium chloride, boric acid, sodium borate decahydrate, and water.

9. The method of claim 7 , wherein the vehicle further comprises one, two, three, four, five, six, seven, eight, or nine ingredients selected from glycerin at concentration of about 1.0% (w/v) to about 2.2% (w/v), mannitol at concentration of about 0.5% (w/v), crosslinked copolymers of acrylic acid and C10-C30 alkyl acrylate at concentration of about 0.01% (w/v) to about 0.1% (w/v), sodium citrate dihydrate at concentration of about 0.4% (w/v), potassium chloride at concentration of about 0.14% (w/v), boric acid at concentration of about 0.25% (w/v), sodium borate decahydrate at concentration of about 0.41% (w/v), and water.

10. The method of claim 1 , wherein the condition is dry eye.

11. A method of treating a condition selected from dry eye, blepharitis, meibomian gland disease, impaired corneal sensitivity, allergic conjunctivitis, atopic keratoconjunctivitis, vernal keratoconjunctivitis, and ptyregia, the method comprising the step of administering to a patient having such a condition a formulation comprising particles of cyclosporin A form 2 and a vehicle, wherein the average size (d90) of the particles is less than about 10 μm, and wherein the formulation is substantially free of other crystalline forms of cyclosporin A.

12. The method of claim 11 , wherein the average size of the particles is less than about 1 μm.

13. The method of claim 11 , wherein the condition is dry eye.