Pharmaceutical formulation comprising non-peptide renin inhibitor and surfactant
Composition comprising (1) a non-peptide renin inhibitor which is poorly soluble to readily soluble in water and (2) at least one physiologically tolerated anionic surfactant, at least one physiologically tolerated amphoteric surfactant at least one physiologically tolerated neutral surfactant, or a mixture of at least two of these surfactants, with the quantity of readily soluble renin inhibitor being at least 10% by weight, and the quantity of a poorly soluble renin inhibitor being at least 35% by weight based on the composition. In oral administration forms, the composition exhibits increased bioavailability.
1 . Composition comprising (1) a non-peptide renin inhibitor which is poorly soluble to readily soluble in water and (2) at least one physiologically tolerated anionic surfactant, at least one physiologically tolerated amphoteric surfactant, at least one physiologically tolerated neutral surfactant, or a mixture of at least two of these surfactants, with the quantity of a readily soluble renin inhibitor being at least 10% by weight, and the quantity of a poorly soluble renin inhibitor being at least 35% by weight, based on the composition.
2 . Composition according to claim 1 , characterized in that the renin inhibitor comprises compounds of the formula la or its physiologically tolerated salts or of the formulae A, B, C, F, G or H:
3 . Composition according to claim 1 characterized in that the quantity of water-soluble renin inhibitors is from 10 to 90% by weight, based on the composition.
4 . Composition according to claim 3 , characterized in that the quantity of water-soluble renin inhibitors is from 50 to 90% by weight, based on the composition.
5 . Composition according to claim 1 , characterized in that the quantity of poorly soluble renin inhibitors is from 40 to 90% by weight, based on the composition.
6 . Composition according to claim 5 , characterized in that the quantity of poorly soluble renin inhibitors is from 60 to 90% by weight, based on the composition.
7 . Composition according to claim 1 , characterized in that the anionic surfactants are organic acids, and their physiologically tolerated salts of alkali metals or alkaline earth metals, which contain a hydrophobic substituent.
8 . Composition according to claim 7 , characterized in that it is sodium lauryl sulfate, sodium cetyl sulfate, sulfated castor oil or sodium dioctyl sulfosuccinate.
9 . Composition according to claim 1 , characterized in that the amphoteric surfactants are natural or modified lecithins, phospholipids and betains.
10 . Composition according to claim 9 , characterized in that the amphoteric surfactants are natural lecithins.
11 . Composition according to claim 1 , characterized in that the neutral surfactants are selected from the group monoesters or diesters composed of glycerol and C 8 -C 30 -carboxylic acids, ethoxylated partial C 3 -C 20 -carboxylic acid esters of polyols, optionally hydrogenated polyoxyl castor oils, partial C 8 -C 20 -carboxylic acid esters of sorbitan, C 8 -C 30 -carboxylic acid esters of polyols, C 8 -C 30 -alkyl ethers of polyoxyethylene, ethoxylated C 8 -C 30 -carboxylic acid esters of sorbitan and polyethyleneoxy/polypropyleneoxy block copolymers.
12 . Oral administration form comprising a composition according to claim 1 .
13 . Oral administration form according to claim 12 , characterized in that it comprises tablets, sugar-coated tablets, capsules or a potable preparation.
14 . Oral administration form according to claim 12 , characterized in that the renin inhibitor is present in a quantity of from 10 to 600 mg, based on the administration form.
15 . Method for increasing the bioavailability of non-peptide renin inhibitors, characterized in that the said renin inhibitor is mixed with at least one physiologically tolerated anionic surfactant, with at least one physiologically tolerated amphoteric surfactant or at least one physiologically tolerated neutral surfactant, or with a mixture of at least two of these surfactants.