A sleep supplement formulation that improves a person's sleep includes Sulforaphane and at least one additional ingredient selected from the following: Evodia Fruit Extract, Vitamin C, Quercetin, Red Sage, Angelica Dahruica Root, Golden Seal, L-Tryptophan, L-Theanine, Melatonin, Vitamin B6, Magnesium, Zinc, Ashwagandha Leaf and Root Extract, Chamomile Flower Extract, Gamma Aminobutyric Acid (GABA), Glycine, Valerian Root, and Lemon Balm Extract. A method of mitigating the effects of caffeine on a person's sleep includes orally administering to the person the sleep supplement formulation.