Plan your cycle

Compound Form Half life (days) Half life (hours) Active dose (%)




The values used above are sourced from the now defunct steroidcalc website. Their source was Behre HM, Nieschlag E. 1998 Comparative pharmacokinetics of testosterone esters. In: Nieschlag E, Behre HM, eds. Testosterone: Action, Deficiency, Substitution, ed 2. Berlin: Springer-Verlag; 329–348.

Trenbolone hex (short for hexahydrobenzylcarbonate) half life is sourced from Gheorghe Borodi, Alexandru Turza, Paula Alexandra Camarasan, Adelina Ulici, Structural studies of Trenbolone, Trenbolone Acetate, Hexahydrobenzylcarbonate and Enanthate esters, Journal of Molecular Structure, Volume 1212, 2020, 128127, ISSN 0022-2860, which lists the half life as 8 days. However, there are conflicting values for its half life on the internet. Many websites list the half life as 14 days. The active dose is calculated from PubChem's molecular weights: Hex and No ester.

The active dose for Boldenone Cypionate is calculated from PubChem's molecular weights: Cypionate and No ester.

The active dose for Trestolone (MENT) is calculated from PubChem's molecular weights: No ester, Acetate, and Enanthate.

Calculations use the formulas:

Release(t) = Dose • ActiveDose% • e^(-t*λ) • λ

λ = log(2) / HalfLife

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User acknowledges that the information in the Website is provided “as is” and for educational purposes only. All of the values within are estimates and may not be accurate. This website does not provide medical advice.