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.
Once you decide on your Proviron doses, you’ll want to ensure you maximize the steroid’s use; get all you can out of it. This steroid will stack well with all anabolic steroids, but this doesn’t mean it needs to be used with all steroids. Without question Proviron will be the most beneficial during the cutting phase alongside steroids like Anavar , Masteron , Trenbolone and Winstrol . With such use, fat burning will be enhanced and the level of hardness that can be obtained greatly improved. You will want to keep your Proviron doses towards the high standard end in order to receive an adequate benefit. Remember, Proviron doses in the 100-150mg per day range will work best.