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Updated Half Lives List of Anabolic Steroids

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  • Updated Half Lives List of Anabolic Steroids

    A different list of half-lives is often copy and pasted on various sites, claiming that, for example, the half-life for the propionate ester is 4.5 days and that the half-life for the enanthate ester is 10.5 days. This list is incorrect, and is the result of flawed calculations many years ago.

    Here is the updated and latest standard:



    The formula used for calculating the rate of compound release at a given day t is: λ * N(t)

    Where λ is the decay constant equal to ln(2)/h, h being the half life of the compound given in days; and N(t) is the half-life equation given by: N(t) = n * e^(-t/λ)

    Where n is the original dose of the compound in mg and t is given in days.

    Terminal Half-lives:
    Testosterone Propionate: 0.8 days
    Testosterone Phenylpropionate: 1.5 days
    Testosterone Isocaproate: 4.0 days
    Testosterone Enanthate: 4.5 days
    Testosterone Cypionate: 5.0 days
    Testosterone Decanoate: 7.5 days
    Testosterone Undecanoate: 20.9 days
    Trenbolone Acetate: 1.0 days
    Trenbolone Enanthate: 4.5 days
    Masteron Propionate: 0.8 days
    Masteron Enanthate: 4.5 days
    Nandrolone Phenylpropionate: 1.5 days
    Nandrolone Decanoate: 7.5 days
    Equipoise: 14.0 days
    Primobolan Oral: 5 hours
    Primobolan Injectable: 4.5 days
    Halotestin: 7 hours
    Anadrol: 14 hours
    Dianabol: 5 hours
    Turinabol: 16 hours
    Winstrol Oral: 8 hours
    Winstrol Injectable: 1.0 days
    Anavar: 10 hours
    Superdrol: 10 hours

  • #2
    Based off this chart, I see a blend of test e and c. 200mg of each. Whats the benefits to this blend? When clearly its just a half day difference.

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    • #3
      Excelent , great post..!!

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