Enterically coated cysteamine, cystamine and derivatives thereof
View Patent ↗The disclosure provides oral cysteamine and cystamine formulations useful for treating cystinosis and neurodegenerative diseases and disorders. The formulations provide controlled release compositions that improve quality of life and reduced side-effects.
1. A composition comprising (a) cysteamine, or a pharmaceutically acceptable salt thereof, or cystamine, or a pharmaceutically acceptable salt thereof, and (b) one or more materials that provide increased delivery of cysteamine or cystamine to the small intestine.
2. The composition of claim 1 , wherein said material is an enteric coating selected from the group consisting of polymerized gelatin, shellac, methacrylic acid copolymer type CNF, cellulose butyrate phthalate, cellulose hydrogen phthalate, cellulose proprionate phthalate, polyvinyl acetate phthalate (PVAP), cellulose acetate phthalate (CAP), cellulose acetate trimellitate (CAT), hydroxypropyl methylcellulose phthalate, hydroxypropyl methylcellulose acetate, dioxypropyl methylcellulose succinate, carboxymethyl ethylcellulose (CMEC), hydroxypropyl methylcellulose acetate succinate (HPMCAS), and acrylic acid polymers and copolymers formed from methyl acrylate, ethyl acrylate, methyl methacrylate and/or ethyl methacrylate with copolymers of acrylic and methacrylic acid esters.
3. The composition of claim 1 or 2 , wherein the material increases delivery of the cystamine or cysteamine to a region of the gastrointestinal tract of a subject in which the pH is greater than pH 4.5.
4. The composition of claim 1 or 2 , wherein the material increases delivery of the cystamine or cysteamine to a region of the gastrointestinal tract of a subject in which the pH is between 4.5 and 6.5.
5. The composition of claim 1 or 2 , wherein the materials increase delivery to the proximal or mid-small intestine or both.
6. The composition of claim 1 or 2 , wherein the materials increase delivery to one or more of the duodenum, jejunum or mid-ileum.
7. The composition of claim 3 wherein the coating material begins to dissolve in an aqueous solution at pH between about 4.5 to about 5.5.
8. A composition comprising an enterically coated cysteamine, or cysteamine derivative, or cystamine or cystamine derivative.