Stabilized pharmaceutically effective composition and pharmaceutical formulation comprising the same
AssigneeLek Pharmaceuticals D.D.
InventorsZlatko Pflaum, Janez Kerc
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AssigneeLek Pharmaceuticals D.D.
InventorsZlatko Pflaum, Janez Kerc
Estimating the term…
Lovastatin, pravastatin, simvastatin, mevastatin, atorvastatin, and derivatives and analogs thereof are known as HMG-CoA reductase inhibitors and are used as antihypercholesterolemic agents. The majority of them are produced by fermentation using microorganisms of different species identified as species belonging to Aspergillus, Monascus, Nocardia, Amycolatopsis, Mucor or Penicillium genus, and some are obtained by treating the fermentation products using the methods of chemical synthesis or they are the products of total chemical synthesis. The aforementioned active substances may be destabilized by the environmental factors, their degradation may also be accelerated by interactions with other pharmaceutical ingredients, such as fillers, binders, lubricants, glidants and disintegrating agents, therefore the pharmaceutical ingredients and the process for preparation of the pharmaceutical formulation should be meticulously chosen to avoid the aforementioned undesired interactions and reactions. The present invention relates to a HMG-CoA reductase inhibitor which is stabilized by forming a homogeneous composition with a buffering substance or a basifying substance. This homogeneous composition is suitably used as the active substance in a pharmaceutical formulation for the treatment of hypercholesterolemia and hyperlipidemia.
A composition comprising a homogeneous mixture of a HMG CoA reductase inhibitor with a buffering substance or a basifying substance in a finely distributed form, obtained by co-crystallization and/or co-precipitation of said HMG CoA reductase inhibitor and said buffering substance or basifying substance, which has a HPLC purity of at least 98%.
A composition comprising a homogeneous mixture of a HMC CoA reductase inhibitor with a buffering substance or a basifying substance in a finely distributed form, obtained by co-crystallization and/or co-precipitation of said HMG CoA reductase inhibitor and said buffering substance or basifying substance and containing less than 0.5% wt of lactone form of the said HMG CoA reductase inhibitor.
Dependencies are inferred from the claim text.