Steroid Active Half Life

By Bella Lee | 23 October 2017 | 0 Comments


 Steroid Active Half Life


A drug's half life is the time required for a drug to be reduced to half of the original administered dose once in the body,or the time required for the activity of a substance taken into the body to lose one half its initial effectiveness.


The concept of steroid half-lives is extremely important to understand, because it allows the individual to understand the amount of time a particular anabolic steroid or drug is actively remaining in the body after administration. This will assist the individual in better planning and organizing his or her cycle appropriately, and understand how to properly time the administration of the anabolic steroids so as to achieve the most effective, comfortable, and safe cycle. 


Anabolic steroid half-lives are affected by a few different factors, the three primary of which are: route of administration, esterification, and resistance to metabolism.


Below a list of half-lifes of the most commonly used steroids, esters and ancillary compounds.


Steroid EstersActive Half Life
Formate1.5 days
Acetate3 days
Propionate4.5 days
Phenylpropionate4.5 days
Butyrate6 days
Valerate7.5 days
Hexanoate9 days
Caproate9 days
Isocaproate9 days
Heptanoate10.5 days
Enanthate10.5 days
Octanoate12 days
Cypionate12 days
Nonanoate13.5 days
Decanoate15 days
Undecanoate16.5 days






















Product NameActive Half Life
Oral Steroids
Oxymetholone (Anadrol) 8-9 hours
Oxandrolone (Anavar) 9 hours
Stanozolol (Winstrol)(tabs or depot taken orally)9 hours
Dianabol (Metandienone) 4.5-6 hours
Mestanolone8-10 hours
Mesterolone (Proviron) 12-13 hours
Oral Turinabol16 hours
Halotestin (Fluoxymesterone)9.5 hours
Methyltestosterone4 days
M1T (17a-Methyl-1-testosterone)5 hours
Methyltrienolone4-5 hours
Cheque Drops (Mibolerone)3.7 hours
Injectable Steroids
Dianabol (Metandienone) (Inject)
Winstrol (Stanozolol)(Inject)1 day
Testosterone Series
Testosterone4-6 hours
Testosterone Acetate3 days
Testosterone Enanthate10.5 days
Testosterone Propionate2-4.5 days
Testosterone Cypionate12 days
Testosterone Suspension4-24 hours
Sustanon 25015-18 days
Testosterone Undecanoate 16.5-21 days
Testosterone Phenylpropionate4-5 days
Testosterone Isocaproate9 days
Testosterone Decanoate15 days
Trenbolone Series
Trenbolone6-8 hours
Trenbolone Acetate3 days
Trenbolone Enanthate7-10 days
Trenbolone Hexahydrobenzylcarbonate14 days
Boldenone Series
Boldenone Base3 hours
Boldenone Acetate3 days
Boldenone Undecylenate14 days
Boldenone Propionate2 days
Boldenone Cypionate8-10 days
Nandrolone Series
Nandrolone Base4 hours
Nandrolone decanate15 days
Nandrolone Phenylpropionate4.5 days
Nandrolone Cypionate8-10 days
Nandrolone Undecylate6-7 days
Masteron Series
Drostanolone Propionate3-4.5 days
Drostanolone Enanthate8 days
Superdrol8-12 hours
Primobolan Series
Methenolone Acetate (Oral)2-3 days
Methenolone enanthate (Inject)7-10 days
Ancillaries
Arimidex3 days
Clomid5 days
T310-60 hours
T47 days
Letrozole5 hours
Nolvadex (Tamoxifen Citrate)5-7 days
Raloxifene27 hours
Cabergoline63-69 hours
Aromasin24 hours
Toremifene citrate5 days
Yohimbine Hydrochloride36 min
Accutane (Isotretinoin)15-23 hours
Viagra (Sildenafil Citrate)4 hours
Tadalafil (Cialis)17.5 hours



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