Oral pharmaceutical compositions with modified release of the active ingredient
The present invention relates to modified-release oral pharmaceutical compositions containing one or more active principles solubilized, suspended or embedded in a suitably formulated amphiphilicmatrix which, loaded in hydrophilic matrices, provides different release profiles.
1. Oral controlled-release pharmaceutical composition, consisting essentially of:
a) an active ingredient;
b) a macrogolglyceride matrix, optionally in combination with diethylene glycol monoethyl ether or polyethylene glycol hydroxystearate, forming a eutectic mixture melting at 35-37° C., in which matrix the active ingredient is at least partially soluble and/or dispersed and/or embedded or granulated with said macrogolglycerides previously solubilised or suspended in solvent;
c) a surface-acting component selected from lecithins, dioctyl sodium sulfosuccinate, sodium lauryl sulfate, sodium sulfosuccinate, and sodium dodecyl sulfate;
d) cyclodextrins or a polymer selected from croscarmellose sodium or cross-linked polyvinylpyrrolidone dispersed in or loaded on said surface-activated macrogolglyceride matrix, to obtain a liquid, semisolid or solid form;
e) a hydrophilic matrix in the form of a hydrogel consisting of cellulose derivatives, wherein the macrogolglyceride matrix is dispersed within the hydrophilic matrix; and
f) optional excipients.
2. Composition as claimed in claim 1 wherein the cyclodextrins are alpha-beta-gamma cyclodextrins, hydroxyethylcyclodextrins, methylcyclodextrins, or hydroxypropylcyclodextrins.
3. Composition as claimed in claim 1 , wherein the cellulose derivatives in the hydrophilic matrix are hydroxypropylmethylcellulose.
4. Composition as claimed in claim 1 , wherein the active ingredient is in part present in the macrogolglyceride matrix and in part loaded on the cyclodextrins or polymer, in the form of minitablets, granules or microgranules.
5. Oral controlled-release pharmaceutical composition, consisting essentially of:
a) an active ingredient;
b) a macrogolglyceride matrix, optionally in combination with diethylene glycol monoethyl ether or polyethylene glycol hydroxystearate, forming a eutectic mixture melting at 35-37° C., in which matrix the active ingredient is at least partially soluble and/or dispersed and/or embedded or granulated with said macrogolglycerides previously solubilised or suspended in solvent;
c) a surface-acting component selected from lecithins, dioctyl sodium sulfosuccinate, sodium lauryl sulfate, sodium sulfosuccinate, and sodium dodecyl sulfate;
d) cyclodextrins or a polymer selected from croscarmellose sodium or cross-linked polyvinylpyrrolidone dispersed in or loaded on said surface-activated macrogolglyceride matrix, to obtain a liquid, semisolid or solid form;
e) a hydrophilic matrix in the form of a hydrogel consisting of cellulose derivatives, wherein the macrogolglyceride matrix is dispersed within the hydrophilic matrix;
f) optional excipients; and
g) gastro-soluble or gastro-resistant coating of cellulose derivatives or methacrylic acid polymers.
6. Composition according to claim 1 , wherein the active ingredient belongs to therapeutical categories selected from antineoplastics and immunomodulators, detoxicant compounds for cytostatic treatments, anti-inflammatories, analgesics and antirheumatics, drugs for the treatment of bone diseases, antitussives, systemic antihistamines, antiemetics, antinausea agents, antipropulsives, oral hypoglycemizing antidiabetics, cathartics, antihypertensives, ace-inhibitors, betablockers and coronarodilators, calcium antagonists, antiparkinson drugs, intestinal anti-inflammatories, anxiolytics, antiepileptics, alpha-blockers, diuretics, hypolipemizing agents, 5HT1 selective antagonists, anticholinergics, lissives, antidepressants, and antibiotics.
7. Composition as claimed in claim 1 , wherein the active ingredient is selected from etoposide, calcium folinate, methotrexate, cyclophosphamide, procarbazine, fluorouracil, idarubicin, glypizide, glybenclamide, flutamide, nimesulide, piroxicam, ketoprofen, ibuprofen, gabapentin, 5-aminosalicylic, budesonide, metformin, and mesalamine.
8. Composition as claimed in claim 1 wherein part of the active ingredient is dispersed in said hydrophilic matrix.
9. The composition as claimed in claim 1 , wherein the solvent is water.