Proviron is a privately owned global company, headquartered in Belgium. The company offers chemical solutions in fields like polymer additives (phthalate-free plasticizers), PLA compounds, functional chemicals (stabilizers and pharmaceutical intermediates), and aviation de-icing fluids, feed ingredients, microalgae and toll manufacturing. Its business units focus on significant challenges such as sustainability, health and environment. After this divestment Proviron has 240 employees, realizing annual sales of €80 million by supporting 500 customers in 100 countries.
Testosterone can be administered parenterally , but it has more irregular prolonged absorption time and greater activity in muscle in enanthate , undecanoate , or cypionate ester form. These derivatives are hydrolyzed to release free testosterone at the site of injection; absorption rate (and thus injection schedule) varies among different esters, but medical injections are normally done anywhere between semi-weekly to once every 12 weeks. A more frequent schedule may be desirable in order to maintain a more constant level of hormone in the system.  Injectable steroids are typically administered into the muscle, not into the vein, to avoid sudden changes in the amount of the drug in the bloodstream. In addition, because estered testosterone is dissolved in oil, intravenous injection has the potential to cause a dangerous embolism (clot) in the bloodstream.