[Delayed-action matrices based on polymers whose solubility varies with pH].
D003692:Delayed-Action Preparations; D004400:Dyphylline; D006863:Hydrogen-Ion Concentration; D011108:Polymers; D011145:Polyvinyls; D012995:Solubility
D003692:Delayed-Action Preparations; D011108:Polymers; D011145:Polyvinyls; D004400:Dyphylline; C036125:polyvinylacetate phthalate polymer
Matrices à action prolongée à base de polymères de solubilités variées en fonction du pH.