Enalapril formulations
DC CAFCFirst Claim
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1. A method of treating hypertension in a subject comprising administering to that subject a therapeutically effective amount of a stable oral liquid formulation, the stable oral liquid formulation comprising:
- (i) about 0.6 to about 1.2 mg/ml enalapril or a pharmaceutically acceptable salt or solvate thereof;
(ii) a buffer comprising about 0.8 to about 3.5 mg/ml citric acid and about 0.1 to about 0.8 mg/ml sodium citrate;
(iii) about 0.7 to about 1.2 mg/ml sodium benzoate; and
(iv) water;
wherein the formulation is stable at about 5±
3°
C. for at least 12 months; and
wherein the stable oral liquid formulation has about 95% w/w or greater of the initial enalapril amount and about 5% w/w or less total impurity or related substances at the end of the given storage period.
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Abstract
Provided herein are stable enalapril oral liquid formulations. Also provided herein are methods of using enalapril oral liquid formulations for the treatment of certain diseases including hypertension, heart failure and asymptomatic left ventricular dysfunction.
48 Citations
30 Claims
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1. A method of treating hypertension in a subject comprising administering to that subject a therapeutically effective amount of a stable oral liquid formulation, the stable oral liquid formulation comprising:
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(i) about 0.6 to about 1.2 mg/ml enalapril or a pharmaceutically acceptable salt or solvate thereof; (ii) a buffer comprising about 0.8 to about 3.5 mg/ml citric acid and about 0.1 to about 0.8 mg/ml sodium citrate; (iii) about 0.7 to about 1.2 mg/ml sodium benzoate; and (iv) water; wherein the formulation is stable at about 5±
3°
C. for at least 12 months; andwherein the stable oral liquid formulation has about 95% w/w or greater of the initial enalapril amount and about 5% w/w or less total impurity or related substances at the end of the given storage period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of treating hypertension in a subject comprising administering to that subject a therapeutically effective amount of a stable oral liquid formulation, the stable oral liquid formulation comprising:
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(i) about 10% to about 25% (w/w of solids) enalapril or a pharmaceutically acceptable salt or solvate thereof; (ii) a buffer comprising about 17% to about 47% (w/w of solids) citric acid and about 1% to about 11% (w/w of solids) sodium citrate; (iii) about 3% to about 25% (w/w of solids) sodium benzoate; and (iv) water; wherein the formulation is stable at about 5±
3°
C. for at least 12 months; andwherein the stable oral liquid formulation has about 95% w/w or greater of the initial enalapril amount and about 5% w/w or less total impurity or related substances at the end of the given storage period. - View Dependent Claims (14, 15, 16, 17)
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18. A method of treating heart failure in a subject comprising administering to that subject a therapeutically effective amount of a stable oral liquid formulation, the stable oral liquid formulation comprising:
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(i) about 0.6 to about 1.2 mg/ml enalapril or a pharmaceutically acceptable salt or solvate thereof; (ii) a buffer comprising about 0.8 to about 3.5 mg/ml citric acid and about 0.1 to about 0.8 mg/ml sodium citrate; (iii) about 0.7 to about 1.2 mg/ml sodium benzoate; and (iv) water; wherein the formulation is stable at about 5±
3°
C. for at least 12 months; andwherein the stable oral liquid formulation has about 95% w/w or greater of the initial enalapril amount and about 5% w/w or less total impurity or related substances at the end of the given storage period. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A method of treating left ventricular dysfunction in a subject comprising administering to that subject a therapeutically effective amount of a stable oral liquid formulation, the stable oral liquid formulation comprising:
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(i) about 0.6 to about 1.2 mg/ml enalapril or a pharmaceutically acceptable salt or solvate thereof; (ii) a buffer comprising about 0.8 to about 3.5 mg/ml citric acid and about 0.1 to about 0.8 mg/ml sodium citrate; (iii) about 0.7 to about 1.2 mg/ml sodium benzoate; and (iv) water; wherein the formulation is stable at about 5±
3°
C. for at least 12 months; andwherein the stable oral liquid formulation has about 95% w/w or greater of the initial enalapril amount and about 5% w/w or less total impurity or related substances at the end of the given storage period. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification