Multifunction Supplements, Plano, TX, has released BrainShiner, a dietary supplement designed to increase memory retention, concentration and alertness while reducing fatigue. The product contains GABA, ginkgo biloba, choline, ginseng, L-glycine, L- glutathione, phenylalanine, L-arginine, vitamin B-1 (thiamine), vitamin B2 (riboflavin), vitamin B-12, vitamin C and zinc.