The majority of large studies are funded by drug manufacturers who are required to do so by the FDA in order to get a particular product approved for mass marketing. Some drugs (bio-identical hormones, for example) cannot be patented; therefore, there is no monetary incentive for any company to pay for an expensive drug study. Furthermore, there are published studies done for many ingredients used in compounded products, including Bio-Identical Hormones. There are several hormone studies available on the Women In Balance Web site www.womeninbalance.org. More studies on compounded items are being conducted regularly.