Powered by Spirulina and All Eight Essential B Vitamins. Nutrilite™ B Vitamins helps your body fight fatigue with natural spirulina and all eight essential B vitamins, including biotin, which the body uses for energy support. The spirulina used is a nutrient-rich blue-green algae sustainably cultivated in a Nutricert™-certified partner facility in Southern California, where specially designed ponds with gentle paddle stirring provide the ideal mix of fresh water, nutrients, and strong Sonoran desert sunlight, bringing together the best of nature and science in every tablet.