Composition of a dietary supplement and/or a nutritional additive for food, a unitary dosage form of said composition, and their use for improvement of the quality of visual performance including contrast sensitivity in persons in need of such an improvement, including persons suffering from at least one eye disease, particularly vitreous floaters
Provided are a composition of a dietary supplement and a nutritional additive for food, a unitary dosage form of said composition, and their use for the improvement of the quality of visual performance including contrast sensitivity. An illustrative composition of the present disclosure includes as active substances L-lysine, vitamin C, zinc, grape extract and bitter orange extract in therapeutically effective quantities, and optionally at least one excipient. In some embodiments, the percentages of the individual active substances relative to the sum of the percentages of all active substances are about 50% by weight of L-lysine, about 15% by weight of vitamin C, about 2% by weight of zinc, about 10% by weight of the grape extract and about 23% by weight of the bitter orange extract, with all percentages of the individual active substances adding up to 100% by weight of all active substances.
1 . A method of treating persons suffering from vitreous floaters, which comprises using a composition of a dietary supplement and/or nutritional additive for food comprising L-lysine, vitamin C, zinc, grape extract and bitter orange extract in therapeutically effective quantities as active substances, and potentially at least one excipient, wherein percentages of the individual active substances relative to a sum of percentages of all active substances are:
a) about 50% by weight of L-lysine,
b) about 15% by weight of vitamin C,
c) about 2% by weight of zinc,
d) about 10% by weight of the grape extract,
e) about 23% by weight of the bitter orange extract,
with all percentages of the individual active substances adding up to 100% by weight of all active substances.
2 . The method according to claim 1 , wherein the composition comprises:
a) from about 125 mg to about 250 mg of L-lysine,
b) from about 40 mg to about 80 mg of vitamin C,
c) from about 5 mg to about 10 mg of zinc,
d) from about 25 mg to about 50 mg of the grape extract,
e) from about 60 mg to about 120 mg of the bitter orange extract.
3 . The method according to claim 1 , wherein the ingredients constitute a mixture.
4 . The method according to claim 1 , wherein the grape extract and/or the bitter orange extract are selected from the group comprising the extract of fruit seeds, the extract of fruit pulp, the extract of fruit skin, the extract of blossoms of these plants, or their combinations.
5 . The method according to claim 1 , wherein the grape extract is a grape extract of the Vitis vinifera species and/or the bitter orange extract is a bitter orange extract of Citrus aurantium species.
6 . The method according to claim 1 , wherein the excipient is a substance nutritionally permitted and is selected from the group consisting of at least a vehicle agent, a bulking agent, a binding agent, a disintegrant, a surfactant, a lubricant, an anti-caking agent, an acidity regulator, an antioxidant, a synthetic and/or natural colourant, a colour retaining substance, an emulsifier, a sweetener, an aromatizing agent, a flavouring agent, a flavour enhancer, a preservative, a stabilizing agent, a solvent, a diluent, and their mixtures.
7 . The method according to claim 1 , wherein the composition is formed as a powder, a granulate, a liquid, or a gel of any formulation adequate for oral application.
8 . The method according to claim 1 , wherein the composition is applied in a predetermined dose, frequency and a form for a period of at least 2 months.
9 . The method according to claim 1 , wherein the composition is formed into a unitary dosage form containing a daily dose of the active substances of the present composition.
10 . The method according to claim 9 , wherein the unitary dosage form is further prepared in a form selected from the group consisting of at least a capsule, a tablet, a sachet, a “stick-type” sachet and an ampoule, including any of the forms ensuring a prolonged release of the active substances of the composition in time of at least 3 hours after consumption.
11 . The method according to claim 5 , wherein the grape extract has a drug extract ratio (DER) of 100:1 and the bitter orange extract has a drug extract ratio (DER) of 100:1.