Stable pharmaceutical compositions without a stabilizer
First Claim
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1. A method for stabilizing pharmaceutical preparations in solid dosage forms by:
- preventing direct contact between excipients that have a negative effect on stability of pharmaceutically active ingredients, said method comprising;
a) adding a sealing component to said excipients to form a sealed excipient component; and
b) combining said sealed excipient component with a composition comprising pharmaceutically active components to form a stable composition, wherein the sealed excipients comprise a combination of low molecular weight and high molecular weight polyethylene oxides.
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Abstract
Stabilized controlled release pharmaceutical preparations are disclosed in which active ingredient degradation is prevented without the use of a stabilizer. The active ingredient is sealed away from excipients that can adversely affect stability by sealing the excipients rather than the active ingredient. The preparations are substantially unaffected by exposure to storage conditions of elevated temperature and/or elevated relative humidity.
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Citations
5 Claims
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1. A method for stabilizing pharmaceutical preparations in solid dosage forms by:
preventing direct contact between excipients that have a negative effect on stability of pharmaceutically active ingredients, said method comprising;
a) adding a sealing component to said excipients to form a sealed excipient component; and
b) combining said sealed excipient component with a composition comprising pharmaceutically active components to form a stable composition, wherein the sealed excipients comprise a combination of low molecular weight and high molecular weight polyethylene oxides. - View Dependent Claims (2)
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3. A pharmaceutical composition in solid form comprising pharmaceutically active ingredients combined with excipients having a negative effect on stability, comprising:
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(a) bupropion hydrochloride;
(b) a compressible tableting filler;
(c) a glidant;
(d) a lubricant; and
(e) a component comprising a mixture of;
(i) a low molecular weight polyethylene oxide;
(ii) a high molecular weight polyethylene oxide; and
(iii) hydroxypropyl cellulose;
as a sealing component to seal (i) and (ii). - View Dependent Claims (4, 5)
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Specification