Active Half-life of Steroids and Esters

An important thought once designing a steroid cycle, specially the temporal arrangement of dosing to be administered, is that the active half-life of the drug being used. Steroids

The half-life is also outlined because the time the amount is 1/2 the beginning level of a given compound; at time 2t, the amount may be a quarter of the beginning level, and at time 3t, the amount is AN eighth of the beginning level, and so on.

This info is important within the temporal arrangement of the dosing once making an attempt to attain a a lot of stable blood concentration, that ends up in larger overall results and maintenance of gains. Some fluctuations of concentration levels ar acceptable, and also are principally inevitable, however ought to be unbroken to a minimum.

This article covers the half-life’s of the foremost normally used steroids, esters and adjutant compounds.

Oral steroids

Drug	Active half-life
Anadrol / Anapolon (oxymetholone)	8 to 9 hours
Anavar (oxandrolone)	9 hours
Dianabol (methandrostenolone, methandienone)	4.5 to 6 hours
Methyltestosterone	4 days
Winstrol (stanozolol) (tablets or depot taken orally)	9 hours

Steroid esters

The half-life applies to the ester regardless of hormone attached, for example trenbolone enanthate and primobolan (methenolone enanthate) will act very similarly to testosterone enanthate in terms of release rate.

Drug	Active half-life
Suspension	within 1 hour
Acetate	1 day
Propionate	1 day
Phenylpropionate	1-2 days
Butyrate	2-3 days
Valerate	3 days
Hexanoate	3 days
Caproate	4-5 days
Isocaproate	4-5 days
Heptanoate	5-6 days
Enanthate	5-6 days
Octanoate	6-7 days
Cypionate	6-7 days
Nonanoate	7 days
Decanoate	7-8 days
Undeclenate	8-9 days
Undecanoate	Approx 20 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