Was on 100mg testosterone undecanoate every week for 1 year which gave me high-normal testosterone levels. But I doesn´t notice any differences in my life compared to the mid-normal levels I had without TRT. Yeah, maybe it wasn´t a clever idea to start with TRT with normal levels and no low-test-symptoms…
So I plan to stop undecanoate and do a PCT with Tamoxifen (4 weeks 40mg ED, then another 4 weeks 20mg ED). As undecanoate has a very long halflife-time, does anyone know when to start with PCT after the last injection of undecanoate 100mg?
From what I read Testosterone U has a very long half life of around 25 days. So if you wait about 5 half lifes you should start your PCT about 4 months after your last jab. This is why undecanoate ester is a very poor choice for replacement therapy.
Someone correct me if I got my math wrong.
After the typical esters (enantate or cyprionate), afaik it is recommended to wait only one half-life-time to start with PCT. Why 5 times with undecanoate?
And I think, this long half-life-time is even a pro argument for using undecanoate as TRT, not a con, because it gives you extremely stable levels of testosterone if injected once a week (and not once every 10-12 weeks als recommended by the manufacturer). But it´s definitely a con if you want do use it in a supraphysiological steroid cycle as a PED.
I agree with starting pct at 3 weeks post last pin. But isnt enanthate (and cypionate) half life 7-8 days?
For my true TRT protocol I pin 120mg cypionate once a week, and TT range is consistently 850ish at peak and 600ish at trough, which suits me fine. I found pinning more frequently to provide no benefit and only be a nuisance while also likely increasing scar tissue (although with 30g x 1" needles scar tissue isnt really a concern).
I’m just going off the numbers from pubmed and other publications.
Mean half-life estimates of the terminal elimination phase were 4 and 7 days for testosterone-enanthate and dihydrotestosterone-enanthate, respectively
Testosterone enanthate (TE) is an esterified version of testosterone with a half-life of 4.5 days. In comparison, unmodified T has a half-life of 10 min (Nieschlag et al., 2012)