Most of us are in the US here so we use Test Cyp mainly. Nebido just got approved here recently and is still very expensive. There are restrictions about self-injecting in the US too with Nebido.
I recommend you read this entire thread to learn more about Bigben66's experience with Nebido.
steroidology.com/forum/testosterone-replacement-therapy/659439-bigben-s-testosterone-replacement-therapy-trt-log-uk-style-9.html
As for hyperness, testosterone is not a stimulant. It shouldn't have that effect on you. But uneven absorption may be messing with your hormone levels. Could be psychosomatic too.
By uneven absorption, do you mean too rapid.
I started splitting the dose. Initially it was two pumps of a 5% cream in the morning. And after three days it made me feel jittery. And typically it would feel beneficial for a week and then I'd crash and think what's the point.
So the dose was upped to two pumps at 7.5%, this had a marked improvement on my mood. But again a crash after 5-7 days on.
The idea to dose only once a day in the mornings was so that my own production remained active.
Then they said try three pumps. At that point I started splitting the dose. And that got me over the mild jitters. But it's a hassle.
Also applying to the scrotum didn't give me the jitters and appeared to offer a slower release mechanism.
But again the progressive improvement would last only 7 days before I'd crash out and hence discontinue.
Yesterday for example I cut my normal dosage in half, but woke early in the morning feeling very down. So I went easy on myself today, just to think about my strategy. As the more I use Trt the more dependent I will become.
Other strategies have worked in the past. Namely dietary changes (high fat, low carb) and homoeopathics. But none have lasted. Eating cabbage seemed of value.
On the other hand I'm only getting older, so the fight to address low t through diet and supplements etc. may be "pissing in the wind". So better to bite the bullet.
Today I feel ok, having taken 3/4 of my normal dosage. My mood is better. This is day 9 of the round.
Possibly I need to up my dose. I'm on 112mg per day (as a cream).
My natural t-levels are midrange, but nonetheless I tick pretty much every box in the low-t symptom list.
It was insomnia that kicked in last year that alarmed me and got me looking into Trt more seriously.
Suggestions/guidance/explanations welcome.