n. a substance or set of substances that interferes with the functions of vitamins in the body. Most antivitamins are chemicals that are molecularly similar in structure to the vitamins that they render ineffective. These substances are used in studies and tests of vitamin deficiencies.

ANTIVITAMIN: "An antivitamin may render the healing properties of a vitamin ineffective. "
Cite this page: N., Pam M.S., "ANTIVITAMIN," in, April 7, 2013, (accessed September 19, 2021).