FIELD: medicine, pharmaceutics.
SUBSTANCE: present invention refers to a controlled-release active agent carrier. The declared carrier contains a natural or synthetic calcium carbonate with an activated surface whereto an active agent is bound. Natural or synthetic calcium carbonate with the activated surface represents a reaction product of natural or synthetic calcium carbonate with carbon dioxide and one acids wherein carbon dioxide is formed in situ when processed by an acid and or supplied from an external source.
EFFECT: invention also refers to a method for preparing the controlled-release carrier which consists in providing calcium carbonate with the activated surface in the form of a tablet or a powder, providing the active agent in the form of a solution or a suspension, contacting calcium carbonate with the activated surface with the active agent and separating the carrier from excess fluid.
17 cl, 5 dwg, 4 ex
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