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napsgeargenezapharmateuticals domestic-supplypuritysourcelabsResearch Chemical SciencesUGFREAKeudomestic

If Deca has a half-life of 6, then.............

i read the attachment that you posted, but when studing chemistry in school, we were taught that the ester decanoate has a half life of 15 days. So i dont understand why the article says that decas half life is 6 days. Bump for more replies
 
15 days...once a week is fine...

Compound Half-Life
Arimidex 3 Days
Clenbuterol 1.5 Days
Anavar 9 Hours
Stanozolol 9 Hours (Oral)
Stanozolol 1 Day (Inj)
Clomid 5 Days
D-Bol 4.5 Hours
T-Suspension 1 Day

Ester Half-Life
Formate 1.5 Days
Acetate 3 Days
Propinate 4.5 Days
Phenylpropinate 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
 
1: Acta Endocrinol Suppl (Copenh) 1985;271:19-30 Related Articles, Books
Pharmacokinetic parameters of nandrolone (19-nortestosterone) after intramuscular administration of nandrolone decanoate (Deca-Durabolin) to healthy volunteers.

Wijnand HP, Bosch AM, Donker CW.

Nandrolone decanoate (Deca-Durabolin) was injected intramuscularly into healthy volunteers. One group of females received one injection of 100 mg and three groups of males received one injection of 200 mg, two repeat injections of 100 mg or four repeat injections of 50 mg respectively. The serum levels of nandrolone (19-nortestosterone) were determined by radioimmunoassay and used to estimate pharmacokinetic parameters. The following pharmacokinetic parameters were found: a mean half-life of 6 days for the release of the ester from the muscular injection depot into the general circulation; a mean half-life of 4.3 h for the combined processes of hydrolysis of nandrolone decanoate and of distribution and elimination of nandrolone; a mean nandrolone serum clearance of 1.55 1 X h-1 X kg-1. The half-life of hydrolysis of nandrolone decanoate in serum was of the order of one hour or less. The data are consistent with linear kinetics.

PMID: 3865478 [PubMed - indexed for MEDLINE]
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6 days it is. Most people inject Deca-Decanoate at least twice a week, in a matter of fact.
 
Hoss said:
15 days...once a week is fine...

Compound Half-Life
Arimidex 3 Days
Clenbuterol 1.5 Days
Anavar 9 Hours
Stanozolol 9 Hours (Oral)
Stanozolol 1 Day (Inj)
Clomid 5 Days
D-Bol 4.5 Hours
T-Suspension 1 Day

Ester Half-Life
Formate 1.5 Days
Acetate 3 Days
Propinate 4.5 Days
Phenylpropinate 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

This guy, who wrote it in AE article is wrong.
 
panerai said:
The following pharmacokinetic parameters were found: a mean half-life of 6 days for the release of the ester from the muscular injection depot into the general circulation;


I don't think they mean half life of deca in the body but how fast it releases from the depot. So within 6 days half of the DECA is in the blood.
 
panerai said:


Yep, that's what half life is called.

Thats a negative.

"A drugs half-life is the time it takes for half of the drug to be metabolized by the body. For example, let’s say were talking about testosterone cypionate, which has a half-life of about 8 days. That means that every 8 days, half of the amount you injected has been metabolized and INACTIVATED. So, if you take 100 mg, in 8 days your body will have broken down about 50 mg of the drug. In another 8 days’ your body will have broken down 25 mg of the drug, then 12.5 mg and so on. Pretty simple, right? If only things were that easy."

Big difference. between being released into the blood from the depot and being metabolized and useless.
 
"A drugs half-life is the time it takes for half of the drug to be metabolized by the

I second that! Deca half life is 15 days
 
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