ENTERIC COATED HYDROPHOBIC MATRIX FORMULATION
First Claim
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1. An enteric coated tablet comprising:
- (a) a matrix drug core comprising;
(i) a therapeutically effective amount of a soluble drug;
(ii) a hydrophobic rate controlling material that is a solid at room temperature; and
(iii) optionally a diluent and(b) an enteric coating surrounding the matrix drug core comprising;
(i) a pH dependent material, and(ii) at least one pharmaceutical excipient.
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Abstract
An enteric coated hydrophobic matrix tablet for soluble, freely soluble and very soluble drugs.
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Citations
30 Claims
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1. An enteric coated tablet comprising:
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(a) a matrix drug core comprising; (i) a therapeutically effective amount of a soluble drug; (ii) a hydrophobic rate controlling material that is a solid at room temperature; and (iii) optionally a diluent and (b) an enteric coating surrounding the matrix drug core comprising; (i) a pH dependent material, and (ii) at least one pharmaceutical excipient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An enteric coated tablet consisting essentially of:
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(a) a matrix drug core consisting essentially of; (j) 5-70 weight percent based upon the weight of the matrix core of a soluble drug; (ii) 5-60 weight percent based upon the weight of the matrix core of a rate controlling, non-polymeric, water insoluble wax with a melting point of about 55°
C. to about 150°
C.;(iii) 5-60 weight percent based upon the weight of the matrix core of a water soluble diluent with a melting point of about 40°
C. to about 75°
C.;(iv) 0-10 weight percent based upon the weight of the matrix core of a lubricant; and (v) 0-10 weight percent based upon the weight of the matrix core of a glidant; and (b) an enteric coating surrounding the matrix drug core comprising; (i) 25-90 weight percent based upon the weight of the enteric coating of a pH dependent material; (ii) 0-25 weight percent based upon the weight of the enteric coating of a plasticizer; and (iii) 0-50 weight percent based upon the weight of the enteric coating of an anti-adherent. - View Dependent Claims (23, 24, 25, 26)
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27. An enteric coated tablet consisting essentially of:
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(a) a matrix drug core consisting essentially of; (k) 15-75 weight percent based upon the weight of the matrix core of a freely soluble or very soluble drug; (ii) 5-60 weight percent based upon the weight of the matrix core of a rate controlling, non-polymeric, water insoluble wax with a melting point of about 55°
C. to about 150°
C.;(iii) 0-10 weight percent based upon the weight of the matrix core diluent; (iv) 0-10 weight percent based upon the weight of the matrix core of a lubricant; and (v) 0-10 weight percent based upon the weight of the matrix core of a glidant; and (b) an enteric coating surrounding the matrix drug core comprising; (j) 25-90 weight percent based upon the weight of the enteric coating of a pH dependent material; and (ii) 0-50 weight percent based upon the weight of the enteric coating of at least one pharmaceutical excipient. - View Dependent Claims (28, 29, 30)
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Specification