The resorbable preparation for medical use, and in particular for use as an resorbable dressing for difficult wounds, includes an amorphous hydrogel composed primarily of a mixture of animal collagen, glycerol, xylitol and ozonized vegetable oil in water.

The mixture may include, depending on the applications and methods of preparation: water, in proportion in the range of 10% to 90% by weight; either animal or synthetic collagen, in proportion in the range of 40% to 70% by weight; glycerol, in proportion in the range of 20% to 50% by weight; xylitol, in proportion in the range of 0.05% to 5% by weight; ozonized vegetable oil, in a proportion ranging between 0.001% and 10% by weight; lactoferrin, in proportion in the range of 0.001% to 10% by weight;

The proportion of water is defined as a function of the desired consistency for the resorbable preparation.