| abstract |
PROBLEM TO BE SOLVED: To provide a novel oral preparation containing collagen or gelatin, and a pharmaceutical and quasi-drug containing collagen as an adsorbent for an active ingredient. SOLUTION: An oral preparation containing collagen or gelatin, fibrous collagen, cross-linked cross-linked collagen, cross-linked and calcified calcified cross-linked collagen, enzyme-treated collagen having a molecular weight of 300,000 or less Or pharmaceuticals and quasi-drugs containing gelatin consisting of the above-mentioned respective collagens, enzymatically or hydrolyzed gelatin. |