The authors examined the clinical impact of the oligopeptide complex Humanofort®. Humanofort® is a standardized chicken embryo extract containing natural growth factors (such as IGF-1, IGF-2, FGF, NGF, EGF, and CTGF). In the experiment the authors examined clinically the anti-inflammatory and analgesic effects of Humanofort® veterinary pharmaceutical product in dogs having chronic pain associated with musculo-sceletal disorders. The experimental design was a multicenter, randomized, double-blinded, placebo-controlled arrangement carried out in accordance with the Good Clinical Practice regulations. The trials proved that the kinetic willingness of dogs suffering from chronic musculoskeletal disorders and treated with a compound containing the active substance Humanofort® has significantly improved compared to the placebo control group (n=49, p=0.0006).