First off, I just do normal TRT at much lower doses than you do, so I’m not speaking from experience, just what I’ve read about nandralone (DECA) on various internet sites and in the medical literature. I’m interested in adding in a small amount of nandralone for 12 weeks to help with some chronic joint injuries. Somewhere around 120mg per week, but haven’t decided yet.
Nandralone is known to have progestin-like activity. That is, it binds to progesterone receptors and stimulates them similarly to progesterone, but it’s not actually progesterone. I’m guessing that it probably also cross-reacts in the progesterone ELISA assay, which is why you are reading high in progesterone.
Are there potential side-effects? Yes. One of the previous posters mentioned that the combination of high progesterone + high E2 puts you at risk of gynecomastia. This is why there is rapid breast development in women during the third trimester of pregnancy when the placenta is secreting high amounts of both hormones.
Can you prevent the gynecomastia from happening when using nandralone + T? Yes, the traditional bodybuilder approach is to lower E2 with an AI and/or block it with a SERM. Another approach I am currently investigating it to block the progesterone receptors with certain anabolic hormones that bind to the progesterone receptor but do not have progesterone activity. I still have a lot of research to do, but Winstrol (stanozolole) is one that is mentioned. Have no idea of the dosing needed. In my case, I’m not overly worries because I use standard TRT dosing of T and my E2 has not been a problem (usually runs a little low to normal) and I’m planning on using much lower doses of nandralone than you are using.
As for the personal questions of what the hell are you doing? Sorry, no advice to give. One has to evaluate their own priorities. It’s just not the road I choose to follow.
Hope it all works out.