These are active lipid compounds that have hormone-like effects in the body. Two common examples include, Alprostadil and Prostacyclin. Even more interesting is that they can be found in almost every tissue in the human body. Scientists have identified ten prostaglandin receptors on various cell types. As such, they provide a variety of effects in the body. The major benefits to athletes include the control of blood pressure, inflammation, cell growth, and even hormone regulation.