Quantum Research Natural Health products was established in 1981 with a simple philosophy produce and market the most effective natural products available. For more than 25 years Quantum has offered the public high-quality, effective products and high-quality, responsive service. Quantum currently offers more than 60 scientifically formulated products designed to help you look and feel your best. All the products are manufactured under exacting quality control standards. Master Herbalists examine the herbs in Quantum products, and most are standardized. Herbspro.com is proud to carry the entire range of this fine brand.