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Thread: Halflife...

  1. #1
    Troyboy is offline Associate Member
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    Halflife...

    What is the halflife of the esters in Sustanon ?
    Sustanon:

    30mg testosterone propionate
    60mg testosterone phenylpropionate
    60mg testosterone isocaproate
    100mg testosterone decanoate


    How many days does each ester last for in the bloodlevels?

  2. #2
    Troyboy is offline Associate Member
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    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

  3. #3
    Troyboy is offline Associate Member
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    I was just reading in the educational forums, and there was some discussion about sust being junk because the blood levels go up and down too much compared to something like Test Enan.

    I think this is false, Since everyone basically does 500mg/week, and injections every 3-4 days, that would give you pretty stable levels as the fastest acting esters are just beginning to drop, you would be doing another injection.
    500mg/week
    Injections Every 3 Days
    Propionate 4.5 days
    Phenylpropionate 4.5 days


    Make sense?

  4. #4
    motoxxxguy's Avatar
    motoxxxguy is offline Anabolic Member
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    The thing is, you are only getting 30mg of prop and 60mg of phenylprop every 3-4 days. That is a waste of the shorter ester tests, but still causes a small spike in your blood test levels. Eod day injects keep the levels constant. If you want to be around 500mg/week, you need to shoot 1/2cc eod to maximize the benefit of sust. Enanthate is just much easier.

    -moto

  5. #5
    motoxxxguy's Avatar
    motoxxxguy is offline Anabolic Member
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    Here's one of my favorite toys...

    Sustanon spreadsheet

    You can play with your injection times and amounts and see how your levels respond.

    -moto

  6. #6
    Troyboy is offline Associate Member
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    I agree with you that there is spikes in bloodlevels with sust, however they are only tiny little spikes that would make no difference in reality. Since it the small dosages of the fast acting esters the spikes would roughly be in the 10-20mg range.

  7. #7
    Pheedno is offline Respected Member
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    The spikes can be dramatic enough to cause estrogenic side effects before the longer esters have been removed.

    You can go 250mg E3D and still reamin witha pretty consistant release. But injecting less frequently in a person that is prone to gyno is asking for chances

  8. #8
    Troyboy is offline Associate Member
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    Is this tool acurate? this is awesome.

  9. #9
    Troyboy is offline Associate Member
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    How can I tell if i am prone to gyno before using AS? I remember when I went through pubrity my glands in my nipples swelled up a bit.

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