From past experiences, I would run 19 Nor without caber and adex. Ran caber at mg twice a week and adex at mg three times a week. No case of deca dick, gyno, estro or progest.. Did what the products were supposed to do.
Bayer proviron was another top quality product and greatly enhanced libido and well being. Used at 50 mg every day.
Alpha pharma is one of the best brand. Dosed npp at 500 every week for 10 weeks. It had my joints feeling smooth. Gave me a nice muscular dense look with less water retention. I stayed leaner.
Truly loved their products.
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.