Steroid Half Lives

[Sistersteel]

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

For all you sust lovers out there note that the following esters and amounts are used:
30mg Propionate
55mg Phenylpropionate
65mg Caproate
100mg Decanoate

Testonon uses the following amounts:
30mg Propionate
55mg Phenylpropionate
65mg Isocaproate
100mg Enanthate

Note that sust and testonon are in fact different in one respect. Also note that the longest acting ester in
these has a half-life of 15 days. As Andy noted previously, 1/2 the half-life should be the optimal point to
begin therapy, thus 1 month (minimum) with testonon and sust.

I would like to point out another fact that arimidex has a half-life of 3 days. Thus an everyday administration is not neccessary.

[Sistersteel]

A few more half lifes...

-) Letrozole (Femara) - 2 days (48hrs)

-) RU486 - 20-30 hrs

-) Aromatase (exemestane) - 1 day (24hrs)

- Also cause decrease in sex hormone binding globulin (SHBG)has been observed with daily exemestane doses of 2.5 mg or higher.
- Increases in testosterone and androstenedione levels have been observed at daily doses of 200 mg or more.
- nondose-dependent increases in serum lutenizing hormone (LH) and follicle-stimulating hormone (FSH) levels have been observed even at low doses as a consequence of feedback at the pituitary level.

-) Nolvadex - 5 days

-) Bromociptrine - 10hrs