Sodium chloride is a synthetic form of salt - table salt. Sodium selenite is a synthetic form of the essential mineral selenium. Taurine is an amino acid. Thiamine hydrochloride is a synthetic source of vitamin B1, thiamine. Thiamine mononitrate is a synthetic source of vitamin B1.
Zinc carbonate is a source of the mineral zinc.
Zinc oxide is a natural form of the mineral zinc. Zinc sulfate is a synthetic form of the mineral zinc. Blue No. 2 is thought to increase some animals' sensitivity to viruses. Yellow No. 5 is commonly used but has not been fully tested. Red No. 2 and Violet No.