Compositions and methods for administering therapeutically active compounds
First Claim
1. A therapeutic composition, said composition comprising:
- (a) an effective amount of a therapeutically active compound, said compound having(i) a molecular weight below about 5,000,(ii) an acidic functional group and a pKa of ≦
6 at physiological pH=7.4, and(iii) which is normally eliminated unmetabolized via the renal tubular secretion pathway for organic anions;
and(b) at least one compound selected from the group consisting of L-threonic, L-xylonic and L-lyxonic acids, and the edible non-toxic salts, aldono-lactones and aldono-lactides thereof, in an amount effective to increase the body absorption rate of said active compound.
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Abstract
A composition useful for administering therapeutically active compounds to improve the body absorption and/or retention thereof comprising a composition includes a therapeutically active compound having a molecular weight below about 5,000, having an acidic functional group and a pKa of ≦6 at pH 7.4 normally eliminated unmetabolized from the body via the renal tubular secretion pathway for organic anions, for example, Vitamin C, and at least one compound selected from the class consisting of L-threonic, L-xylonic and L-lyxonic acids, and the edible salts, aldono-lactones and aldono-lactides thereof.
A method for establishing and maintaining body levels of a therapeutically active compound includes the step of administering a therapeutically effective dose of this composition.
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Citations
19 Claims
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1. A therapeutic composition, said composition comprising:
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(a) an effective amount of a therapeutically active compound, said compound having (i) a molecular weight below about 5,000, (ii) an acidic functional group and a pKa of ≦
6 at physiological pH=7.4, and(iii) which is normally eliminated unmetabolized via the renal tubular secretion pathway for organic anions; and (b) at least one compound selected from the group consisting of L-threonic, L-xylonic and L-lyxonic acids, and the edible non-toxic salts, aldono-lactones and aldono-lactides thereof, in an amount effective to increase the body absorption rate of said active compound. - View Dependent Claims (2, 3, 4, 12, 13, 14)
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5. A Vitamin C composition, said composition comprising:
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(a) an effective amount of a compound having Vitamin C activity, selected from the group consisting of (i) dehydroascorbic acid, (ii) L-ascorbic acid and the edible salts thereof; and (b) at least one compound selected from the group consisting of the aldono-lactones of L-threonic acid, L-xylonic acid, L-lyxonic acid and the edible salts of L-threonic acid, L-xyonic acid and L-lyxonic acids, in an amount effective to increase the human body absorption rate of said Vitamin C compound. - View Dependent Claims (6, 7, 15, 16, 17)
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8. A method for improving the effectiveness of a therapeutically active compound, said compound having
a molecular weight below about 5,000, an acid functional group and a pKa of ≦ - 6 at physiological pH=7.4, and
which is normally eliminated unmetabolized via the renal tubular secretion pathway for organic anions, said method consisting of the step of administering to a subject an effective dose of a composition comprising; (a) an effective amount of a therapeutically active compound; and (b) at least one compound selected from the group consisting of L-threonic acid, L-lyxonic acids, and the edible non-toxic salts, aldono-lactones and aldono-lactides thereat, in an amount effective to increase the body absorption rate of said active compound. - View Dependent Claims (9, 10, 11)
- 6 at physiological pH=7.4, and
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18. A method of suppressing the excretion of organic anions via the renal tubular secretion pathway comprising the step of establishing an effective blood concentration of a compound selected from the group consisting of L-threonic, L-xylonic and L-lyxonic acids, and the edible non-toxic salts, aldono-lactones and aldono-lactides thereof.
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19. A method of improving the absorption of organic anions in body tissue comprising the step of establishing an effective blood concentration of a compound selected from the groups consisting of L-threonic, L-xylonic and L-lyxonic acids, and the edible non-toxic salts, aldon-lactones and aldon-lactides thereof.
Specification