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Old 02-09-2004, 01:36 PM   #1
liftsiron
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AAS half lifes

Here is a list of half lives for different drugs and steroid esters:

Drug Half-Life:

Arimidex 3 days
Clenbuterol 1.5 days
Anavar 9 hours
Stanozolol (oral) 9 hours
Methyltest 4 days
Stanozolol (injectable) 1 day
Clomid 5 days
Dianabol 4.5 hours
Testosterone Suspension 1 day

Here are the half-lives for any of the following steroid esters:

Ester 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
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Old 02-09-2004, 01:38 PM   #2
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good stuff!
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Old 02-09-2004, 01:39 PM   #3
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Great info Liftsiron!
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Old 02-10-2004, 12:35 AM   #4
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Nice !
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Old 02-11-2004, 11:31 AM   #5
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Thanks for the reminder.
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Old 01-10-2006, 02:28 PM   #6
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Old 02-28-2007, 10:54 AM   #7
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Just wondering what's the half life of Anadrol 50.
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Old 04-14-2009, 01:12 PM   #8
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http://www.mesomorphosis.com/article...oid-esters.htm


What are the half-lives of different esters?

Shorter chain esters have shorter half-lives, because of their lower partition coefficient. Testosterone cypionate has a half-life of 8 days5, the enanthate ester has a half-life of 4 days6, and nandrolone decanoate has a half-life of 8 days7. These figures are only approximate. The difference between these values for cypionate and enanthate probably includes difference attributable to different measuring techniques. The actual difference is probably not more than two days.

In the rat, where half-lives of anabolic steroid esters are similar to those in humans but somewhat shorter, the half-lives of the phenylpropionate, decanoate, and laurate esters are 1, 5, and 10 days respectively.3 The same trend would be expected in man.

Half-life is linearly related to log partition coefficient, which is itself linearly related to the carbon chain length, the exception being if the ester is an unusual one such as phenylpropionate. This was shown by James et al.3 for the formate through valerate esters of testosterone in the rat. The half-life of testosterone propionate was approximately 4 days, and each carbon added to or subtracted from that chain length changed half-life by about 1.5 days.










why is this not the same as your half lives?


another article saying 4 days as a half life for enanthate: http://books.google.ca/books?id=ZiZ7...um=4#PPA417,M1
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Old 03-05-2023, 08:08 PM   #9
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What about Sustenon and/or tren? (Asking for a friend&#128513!
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Old 03-06-2023, 05:56 AM   #10
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Originally Posted by mrhtbd View Post
What about Sustenon and/or tren? (Asking for a friend&#128513!
Tren e 7-10 days Sus about 14 days.
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