The composition and method for healing tissues is a medicinal composition for facilitating the growth, protection and healing of tissues and cells in animals and humans. The composition is formulated as a either a powder, gel, paste, film, fluid injectable, rehydratable freeze-dried paste or sponge, sprayable solution, topically applied patch with adhesive and reservoir system, an intermediate for coatables such as films and bandages, a matrix for membranes, or as a matrix of flexible polymer(s), or delivered as either an orally ingestible liquid, tablet or capsule. The main ingredient of the formulated compositions is hydrolyzed collagen, which can be combined with polysulfated glycosaminoglycans, hyaluronic acid or salts thereof, or a glucosamine salt, and mixtures thereof. The composition may be formulated as an aqueous eye drop solution.