Abstract: A readily absorbable type of motilin preparation containing a motilin-like active substance and a surface active agent is provided, in which the motilin-like active substance is mainly L-leucine-13-motilin-homoserine, and the surface active agent is selected from the group consisting of a bile salt, saponin and a polyethylene glycol higher-alcohol ether for nasal administration purposes and is a peptide lytic enzyme inhibitor for oral administration purposes.

Abstract: A composition for inhibiting the degeneration of cells including liver cells by drugs and relieving the toxicity of drugs to internal organs including the liver contains as an essential component a 3-oxygermylpropionic acid polymer which is represented by:[(O.sub.1/2).sub.3 GeCH.sub.2 CH.sub.2 COOH].sub.nwherein n is an integer of at least 1, takes the form of a white acicular crystal and has a melting point of about 230.degree. C. at which it decomposes or coagulates. The present composition may be used with a carrier hydroxypropylcellulose in an amount of 0.005 to 50% by weight relative to 0.005 to 5% by weight of the 3-oxygermylpropionic acid polymer.