Specific treatment for dogs and cats against coccidiosis, giardiasis, and infections complicated by intestinal dysbacteriosis or infections caused by germs sensitive to dimetridazole and sulfa drugs. Specific treatment for at-risk groups: breeders, puppies from the first weeks of life. Preparation for stressful situations: weaning, change of environment, vaccinations, daycare, exhibitions, stray animals, multiple parasitic infections.