I've been running 200 mg Sustanon + 200 mg Nandrolone D for 4 weeks now as an experiment (both split M, W, F) and I just did a blood test. I was a bit surprised that the result came out as high as 3200 ng/dL. Keep in mind that it is ECLIA test and it doesn't differentiate between testosterone and nandrolone, so this is the total concentration. So the testosterone only will be roughly 1600 ng/dL which is still fairly high, but nothing super crazy.
I will probably reduce the dose of both soon, but I have been feeling amazing so far. Libido is a lot higher than before (I used to run 150 mg Sustanon only), energy is really good. I haven't felt the gym gains yet, but I've just started getting back in shape so that would explain this.
No side effects so far. Hematocrit is 44%, didn't get elevated at all yet, same for hemoglobin. Blood pressure is normal, again no change compared to before. Cholesterol got slightly worse, meaning LDL increased a bit and HDL decreased a bit, but it's still within the healthy norms and it could be just natural variation, unrelated to starting Nandrolone. As far as I know, Nandrolone shouldn't really screw your cholesterol.
I am running bloods every month when changing a protocol to make sure I track changes closely. Many people might say that I am running a crazy high doses, but if I am feeling excellent and I experience no side effects / negative blood changes, I don't really see a huge problem with that. I've been having many joint problems / tendon - muscle recovery problems before when doing intensive sports, so I will quite welcome the beneficial effects of Nandrolone regarding that. Gym gains will be welcome too, although I don't really want to be getting any bigger, just stronger.