Exactly what i was lookin for today. Excellent share bud, Kudos.

Nicely summarized. Thanks for sharing

thanks for the info

Thanks mate very helpful

I thought Test P only had a half life of 1.5 days! Very informative 🫡

Quoted oli; Post# 349

Steroid Half Lives: A proven guide on how to calculate half lives

Steroid Half Lives

Steroid Half lives - anyone new to steroids may be wondering what this means, even some steroid users may also be wondering what this means. So here in simple terms you can read and hopefully understand all about steroid half lives and what this term means.

How to calculate half lives

Basically every drug has a half live, steroids included. If for example, you were to inject 200mg of Decadurabolin once weekly, for 6 weeks, how would you know when you were "off"? Would you be "off" when you had finished your last dose? You would be able to calculate this from the half live of Deca. The half live of Deca is around 14 days. This means that 14 days from your last shot of 200mg of Deca, your blood levels of Deca will contain 100mg of the steroid. Another 14 days from then, i.e. 28 days from last dose, your blood levels will contain 50mg of the steroid. This amount then keeps halving every 14 days. Therefore you can clearly see that when you finish your cycle, even though you are not putting any steroids into your body, you may think that you are now "off", however you still have, and will still have for some time after your last dose, "active" blood levels of the steroid. Therefore you can plan what to use, how long for, and how long off your cycle, based on these half live's.
Below a list of half-live's of the most commonly used steroids, esters and ancillary compounds.

Oral steroids Drug Active half-live

Anadrol / Anapolan50 (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

Depot steroids Drug Active half-live 

Deca-durabolin (Nandrolone decanate) 14 days 
Equipoise 14 days 
Finaject (trenbolone acetate) 3 days 
Primobolan (methenolone enanthate) 10.5 days 
Sustanon or Omnadren 15 to 18 days 
Testosterone Cypionate 12 days 
Testosterone Enanthate 10.5 days 
Testosterone Propionate 4.5 days 
Testosterone Suspension 1 day 
Winstrol (stanozolol) 1 day

Steroid esters Drug Active half-live 

Formate 1.5 days Acetate 3 days 
Propionate 2 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

Ancillaries Drug Active half-live 

Arimidex 3 days 
Clenbuterol 1.5 days 
Clomid 5 days
 Cytadren 6 hours 
Ephedrine 6 hours T3 10 hours

This chart is so wrong.
How does testosterone enth get labeled with a 10 day half life yet only has a 7 straight carbon chain.

Propionate 3 straight carbon chain yet labeled a 4.5 day half life.

Cypionate 8 carbon chain labeled as a 12 day half life.

None of that even makes sense. You physically cannot have a 12 day half life on an a carbon chain. It’s simple chemistry.

It takes the human body 24h to remove one ester carbon with a standard deviation of +/- .25.

Nicely summarized. Thanks Buddy

Yes, exactly, that is what I am also thinking about.

Quoted Pcushion; Post# 5392

This chart is so wrong.
How does testosterone enth get labeled with a 10 day half life yet only has a 7 straight carbon chain.
Propionate 3 straight carbon chain yet labeled a 4.5 day half life.
Cypionate 8 carbon chain labeled as a 12 day half life.
None of that even makes sense. You physically cannot have a 12 day half life on an a carbon chain. It’s simple chemistry.
It takes the human body 24h to remove one ester carbon with a standard deviation of +/- .25.

The heading "How to calculate half lives" does not make sense to me buddy.

Quoted oli; Post# 349

Steroid Half Lives: A proven guide on how to calculate half lives

Steroid Half Lives

Steroid Half lives - anyone new to steroids may be wondering what this means, even some steroid users may also be wondering what this means. So here in simple terms you can read and hopefully understand all about steroid half lives and what this term means.

How to calculate half lives

Basically every drug has a half live, steroids included. If for example, you were to inject 200mg of Decadurabolin once weekly, for 6 weeks, how would you know when you were "off"? Would you be "off" when you had finished your last dose? You would be able to calculate this from the half live of Deca. The half live of Deca is around 14 days. This means that 14 days from your last shot of 200mg of Deca, your blood levels of Deca will contain 100mg of the steroid. Another 14 days from then, i.e. 28 days from last dose, your blood levels will contain 50mg of the steroid. This amount then keeps halving every 14 days. Therefore you can clearly see that when you finish your cycle, even though you are not putting any steroids into your body, you may think that you are now "off", however you still have, and will still have for some time after your last dose, "active" blood levels of the steroid. Therefore you can plan what to use, how long for, and how long off your cycle, based on these half live's.
Below a list of half-live's of the most commonly used steroids, esters and ancillary compounds.

Oral steroids Drug Active half-live

Anadrol / Anapolan50 (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

Depot steroids Drug Active half-live 

Deca-durabolin (Nandrolone decanate) 14 days 
Equipoise 14 days 
Finaject (trenbolone acetate) 3 days 
Primobolan (methenolone enanthate) 10.5 days 
Sustanon or Omnadren 15 to 18 days 
Testosterone Cypionate 12 days 
Testosterone Enanthate 10.5 days 
Testosterone Propionate 4.5 days 
Testosterone Suspension 1 day 
Winstrol (stanozolol) 1 day

Steroid esters Drug Active half-live 

Formate 1.5 days Acetate 3 days 
Propionate 2 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

Ancillaries Drug Active half-live 

Arimidex 3 days 
Clenbuterol 1.5 days 
Clomid 5 days
 Cytadren 6 hours 
Ephedrine 6 hours T3 10 hours

Saved me once more 😅

Quoted Pcushion; Post# 5392

This chart is so wrong.
How does testosterone enth get labeled with a 10 day half life yet only has a 7 straight carbon chain.
Propionate 3 straight carbon chain yet labeled a 4.5 day half life.
Cypionate 8 carbon chain labeled as a 12 day half life.
None of that even makes sense. You physically cannot have a 12 day half life on an a carbon chain. It’s simple chemistry.
It takes the human body 24h to remove one ester carbon with a standard deviation of +/- .25.

Thanks for identifying that. Proper half lives are mentioned at https://steroidwiki.com/calculators/steroidcycleplotter.php

Active Half-life of all steroids

Quoted Pcushion; Post# 5392

This chart is so wrong.
How does testosterone enth get labeled with a 10 day half life yet only has a 7 straight carbon chain.
Propionate 3 straight carbon chain yet labeled a 4.5 day half life.
Cypionate 8 carbon chain labeled as a 12 day half life.
None of that even makes sense. You physically cannot have a 12 day half life on an a carbon chain. It’s simple chemistry.
It takes the human body 24h to remove one ester carbon with a standard deviation of +/- .25.

Thank you sir. These are much more on point.

I was not trying to ruffle any feathers guys, I just want to only spread accurate information.

Quoted admin; Post# 5414

Thanks for identifying that. Proper half lives are mentioned at https://steroidwiki.com/calculators/steroidcycleplotter.php

Active Half-life of all steroids

Compound	Form	Half life (days)	Half life (hours)	Active dose (%)
Anadrol		0.58	14	100
Anavar		0.42	10	100
Arimidex		1.95	46.8	100
Aromasin		1	24	100
Boldenone	Cypionate	5	120	70
Dianabol		0.21	5	100
Dihydroboldenone (DHB)	Cypionate	5	120	70
DNP	Crystal	1.5	36	75
DNP	Powder	1.5	36	100
Epistane		0.25	6	100
Equipoise		14	336	61
Halotestin		0.29	7	100
Masteron	Enanthate	4.5	108	70
Masteron	Propionate	0.8	19.2	80
Nandrolone	Decanoate	7.5	180	64
Nandrolone	Phenylpropionate	1.5	36	67
Primobolan	Enanthate	4.5	108	70
Primobolan	Oral	0.21	5	100
Superdrol		0.42	10	100
Testosterone	Cypionate	5	120	69
Testosterone	Decanoate	7.5	180	62
Testosterone	Enanthate	4.5	108	70
Testosterone	Isocaproate	4	96	72
Testosterone	Phenylpropionate	1.5	36	66
Testosterone	Propionate	0.8	19.2	80
Testosterone	Suspension	0.5	12	100
Testosterone	Sustanon 250	0.8	19.2	68
Testosterone	Undecanoate	20.9	501.6	61
Testosterone	Undecanoate (Castor Oil)	33.9	813.6	61
Trenbolone	Acetate	1	24	87
Trenbolone	Enanthate	4.5	108	70
Trenbolone	Hex (Parabolan)	8	192	66
Trestolone (MENT)	Acetate	1	24	87
Trestolone (MENT)	Enanthate	4.5	108	72
Turinabol		0.67	16	100
Winstrol	Injectable	1	24	87
Winstrol	Oral	0.33	8	100

<br>

We're good mate. Appreciate you helping others.

Quoted Pcushion; Post# 5418

Thank you sir. These are much more on point.
I was not trying to ruffle any feathers guys, I just want to only spread accurate information.

Thanks for highlighting guys @admin @pcushion. Just updated the thread.

Informative Post! It must be pinned!

How often and how many mgs would you suggest for a trt with test u?

I know i am a bit late but I would keep the dose to 35mg ed for a max. period of 12 weeks because Testosterone Undecanoate has a higher molecular weight compared to Testosterone Enanthate and Cypionate, therefore it requires about 15-20% higher dosages.

https://steroidwiki.com/forum/post/6571/

Some values in the list above seem a little bit off. For example T3 with 10h hours seems pretty short. I think it's more like 2 days.
But otherwise very useful list!

Really good guide oli. Appreciate it!