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  1. #1
    Elite LeanHerm's Avatar
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    active half lives of esters and some research chems!

    I know some guys get confused when to pin to get steady blood levels, and when to start pct so here's a lil list.

    Oral steroids:

    Drug Active half-life

    Anadrol / Anapolan50 (oxymetholone) 8 to 9 hours

    Anavar (oxandrolone) 9 hours

    Dianabol (methandrostenolone, methandienone) 4.5 to 6 hours

    Methyltestosterone 4 days

    Winstrol (stanozolol) 9 hours

    Halotestin (Fluoxymesterone) 9.5 hours

    Turinabol (Tbol) 16 hours

    Injectable steroids:

    Drug Active half-life

    deca-durabolin (nandrolone decanate) 15 days

    Equipoise 14 days

    finaject (trenbolone acetate) 3 days

    primobolan (methenolone enanthate) 10.5 days

    Sustanon or omnadren 15 to 18 days

    Testosterone cypionate 12 days

    Testosterone enanthate 10.5 days

    Testosterone propionate 4.5 days

    Testosterone Suspension 1 day

    Winstrol (stanozolol) 1 day

    Steroid esters:

    Drug Active half-life

    Formate 1.5 days

    Acetate 3 days

    propionate 4.5 days

    Phenylpropionate 4.5 days

    Butyrate 6 days

    Valerate 7.5 days

    Hexanoate 9 days

    Caproate 9 days

    Isocaproate 9 days

    Heptanoate 10.5 days

    enanthate 10.5 days

    Octanoate 12 days

    cypionate 12 days

    Nonanoate 13.5 days

    decanoate 15 days

    undecanoate 16.5 days

    ancillaries:

    Drug Active half-life

    Arimidex 3 days

    Clenbuterol 1.5 days

    clomid 5 days

    Cytadren 6 hours

    Ephedrine 6 hours

    T3 10 hours

    letrozole 5 hours

    Nolvadex (Tamoxifen Citrate) 14 days

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    bulldogger (03-27-2019)

  3. #2
    Elite PillarofBalance's Avatar
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    Thanks herm...
    "Overzealous dosing" -Jin

    Rest in Peace Robot Lord. First round of Natty Boh is on me when I make it up there with you brother.

  4. #3
    Elite biggerben692000's Avatar
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    Re: active half lives of esters and some research chems!

    Thanks BigHerm! Good shit.

  5. #4
    Senior Member Get Some's Avatar
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    Re: active half lives of esters and some research chems!

    Sorry to do this to you again Herm, lol, but those numbers are simply not correct, although you often see them. 4.5 day half life for propionate? Also 4.5 days for phenylpropionate? 12 days for CYP!!!?? lol. We'd have to wait months to start PCT at optimal levels if it was 12 days! lol. The funny thing is that the actual half lives are closer to half of what is posted (for most, not all). Here is a link with a chart that you can see the test enanthate drop to "half" the peak level after about 5 days:

    http://www.medibolics.com/freq2.htm

    And just to be clear, the "half life" that we are concerned about here is the level in your system falling to "half" of what it was at it's peak concentration. It may well be that for medical purposes and TRT effectiveness it has a 10.5 day half life or whatever, but that info is completely useless for someone running a cycle like us. You need to know when it reaches the halfway point so you can get the levels back up.

    So, to sum it up, Herm is not wrong, lol.... I just exalained things in a way that relates to what we do with the drugs, rather than in a TRT sense.

  6. #5
    Elite LeanHerm's Avatar
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    Re: active half lives of esters and some research chems!

    Ya but isn't that graph tested at 140mg a week? Also dropping half in half of the active life still means your not low enough for you to start recovering?

  7. #6
    Senior Member Get Some's Avatar
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    Re: active half lives of esters and some research chems!

    Originally Posted by BigHerm View Post
    Ya but isn't that graph tested at 140mg a week? Also dropping half in half of the active life still means your not low enough for you to start recovering?
    Ummm, say that again? lol

    it doesn't really matter what doseage as it will drop at the same rate always. So, if you start higher with a frontload, you can maintain higher levels throughout. There is so much bogus info on esters all over the internet that it's ridiculous. Just google "Testosterone Enanthate real half life" and see what kind of bunk shit people post. I saw in a list like this that listed the following:

    propionate - 2.25 days
    phenylpropionate - 2.25 days
    acetate - 3 days

    lolololol, those are all wrong.... acetate is shorter than both and PP is the longest, not much shorter than enanthate in fact. If you look at the carbon chains you can figure that out (I'm not saying you in particular Herm, I'm speaking to the community now, lol).

  8. #7
    Elite LeanHerm's Avatar
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    Re: active half lives of esters and some research chems!

    From what I understood pp was smack dab inbetween prob and e.

    Lol sorry what i was saying is if a guy let's say taking 140mg which is like a trt dose and let's say he's in the 500 test range vs a guy taking 600mg a week with let's say 1500 maybe more but you know the routine. So if candidate a is stopping to go do a pct that his levels would hit a low enough number for hpta to start coming back before candidate b because of the test levels? So with that bein said is the ester already gone and its just the elevated test levels in the blood reducing?

  9. #8
    Senior Member Get Some's Avatar
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    Re: active half lives of esters and some research chems!

    yes, now you're onto something! The blood level is what's important here. The more you have in your blood at the end, the more it makes sense to run prop for the last few weeks. If you are just running a low dose (even though that's dumb, lol) then you should be fine.

    Another thing I wanted to mention as well is that fact that I see some people saying they are going to run a low dose of test with a high dose of something else so their natural test levels won't be suppressed that much... lol, yes I'm serious. I know most of you see the problem, I just wanted to make sure y'all knew about this.

    Most every steroid is a derivative or cousin of testosterone and will shut down your natural test levels. Otherwise, you'd see guys running cycles without any test all the time. On the other hand, if you are thinking about running a steroid cycle, you may want to run a clomid or letro only cycle first to see how much you can raise your natural test levels first.... just a thought mates

    Originally Posted by BigHerm View Post
    From what I understood pp was smack dab inbetween prob and e.

    Lol sorry what i was saying is if a guy let's say taking 140mg which is like a trt dose and let's say he's in the 500 test range vs a guy taking 600mg a week with let's say 1500 maybe more but you know the routine. So if candidate a is stopping to go do a pct that his levels would hit a low enough number for hpta to start coming back before candidate b because of the test levels? So with that bein said is the ester already gone and its just the elevated test levels in the blood reducing?

  10. #9
    Elite LeanHerm's Avatar
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    Re: active half lives of esters and some research chems!

    Originally Posted by Get Some View Post
    yes, now you're onto something! The blood level is what's important here. The more you have in your blood at the end, the more it makes sense to run prop for the last few weeks. If you are just running a low dose (even though that's dumb, lol) then you should be fine.

    Another thing I wanted to mention as well is that fact that I see some people saying they are going to run a low dose of test with a high dose of something else so their natural test levels won't be suppressed that much... lol, yes I'm serious. I know most of you see the problem, I just wanted to make sure y'all knew about this.

    Most every steroid is a derivative or cousin of testosterone and will shut down your natural test levels. Otherwise, you'd see guys running cycles without any test all the time. On the other hand, if you are thinking about running a steroid cycle, you may want to run a clomid or letro only cycle first to see how much you can raise your natural test levels first.... just a thought mates
    thanks bro!!! I'm learning a lot from you.

  11. #10
    Member Pikiki's Avatar
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    Re: active half lives of esters and some research chems!

    Always a school with this nice discussions for sure, thnx guys

  12. #11
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    Re: active half lives of esters and some research chems!

    So is this accurate oraccuratr enough? Looking for a reliable list

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