Excellent Pets biotin Excellent Pets Biozin is a complementary feed for dogs and cats in powder form. It supports the coat, skin, and nails. Effect Biozin contains a balanced combination of biotin, zinc, and methionine. The vitamin biotin and the trace element zinc contribute to the maintenance of healthy hair, skin, and nails. The amino acid methionine is involved in the formation of proteins such as keratin, which make up the hair, skin, and nails. Use Biozin: To support the coat, skin, and nails Feeding advice For dogs lighter than 10 kg and cats: 2 to 3 g per day For dogs of 10 kg or heavier: 4 to 5 g per day Sprinkle the powder over the food.