Exemestane (Aromasin)

Diagram of molecule

Chemical Name(s):

6-methyleneandrosta-1,4-dien-3,17-dione
Chemical Formula: C20H24O2
Molecular Weight: 296
CAS: NA
Q Qatio: NA
Anabolic #: NA
Androgenic #: NA
Oral Bioavailability: Estimated at 15%
AR Binding Affinity: NA
SHBG Binding Affinity: NA
Half Life: 27 hours
Legal Status (US): Prescription only
Average Dose: 10-25mg/day
Average Cycle Length: 4-8 weeks
Stimulator
Inhibitor

-5
-4
-3
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-1

0
1
2
3
4
5

Muscle Gain

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-5
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-1

0
1
2
3
4
5

Strength Gain

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-5
-4
-3
-2
-1

0
1
2
3
4
5

Fat Gain (negative indicates fat loss)

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-5
-4
-3
-2
-1

0
1
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3
4
5

Water Retention (extra-cellular bloat)

[]
-5
-4
-3
-2
-1

0
1
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3
4
5

Aggression

[]
-5
-4
-3
-2
-1

0
1
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3
4
5

Libido

[]
-5
-4
-3
-2
-1

0
1
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3
4
5

Acne

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Hair Loss

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Prostate Enlargement

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Liver Toxicity

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Lethargy

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Characteristics

Exemestane is a steroidal aromatase inhibitor, known as a suicidal inhibitor because it permanently binds to the aromatase enzyme.

Exemestane is one of the most potent and expensive steroidal aromatase inhibitors currently available on the market. It is available by prescription only. The estrogen inhibition rate for exemestane varies from 85% of estradiol to 95% for estrone.

Exemestane is looked highly upon due to the fact it can be just as effective as Letrozole or Arimidex without causing such a rapid rebound of estrogen, which is a typical problem of non-suicidal aromatase inhibitors.

Exemstane is rarely dosed beyond 25mg/day as this appears to be a high enough dose to suppress estrogen by a significant amount. It can reach maximum estrogen suppression in as little as 7 days. Since it increases testosterone levels, some users may experience androgenic effects.


Related Discussion

The Official Exemestane (Aromasin) Thread
Posted by Eric

References

Anabolic Pharmacology
Seth Roberts (2009)

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1,4-AD (Boldione)

Diagram of molecule

Chemical Name(s):

1,4-androstadiene-3b,17b-dione
androst-1,4-diene-3b,17b-dione
1,4-Androstenedione
Chemical Formula: C19H24O2
Molecular Weight: 284.4
CAS: NA
Q Qatio: NA
Anabolic #: NA
Androgenic #: NA
Oral Bioavailability: Estimated at 8%
AR Binding Affinity: NA
SHBG Binding Affinity: Low
Half Life: NA
Legal Status (US): Listed as a controlled substance
Average Dose:
800-1500mg/day standalone
400-1000mg/day when stacking
Average Cycle Length: 6 weeks
Stimulator
Inhibitor

-5
-4
-3
-2
-1

0
1
2
3
4
5

Muscle Gain

[][]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Strength Gain

[][]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Fat Gain (negative indicates fat loss)

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Water Retention (extra-cellular bloat)

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Aggression

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Libido

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Acne

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Hair Loss

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Prostate Enlargement

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Liver Toxicity

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Lethargy

[]
-5
-4
-3
-2
-1

0
1
2
3
4
5

Characteristics

Boldione is NOT a 17-alpha alkylated steroid, therefore high doses must be taken to accommodate for its rapid excretion from the liver.

Boldione itself likely does not have any significant anabolic or androgenic value. However after interaction with the 17b-HSD enzyme, boldione is converted to the illegal anabolic steroid boldenone. Boldione can also be converted to 1-androstenedione (1-AD) and/or 1-testosterone after interaction with the 5a-reductase enzyme. These metabolites are where this pro-hormone gets most of its effects.

Since boldione is a dione, conversions to the more powerful steroid metabolites are expected to be near 15-20%, which is another reason why such high doses are needed to see results.

This pro-hormone (and its metabolites) do not convert very readily to estrogen, so an aromatase inhibitor would likely not be needed during a cycle.

Results can be expected to kick in slowly after several weeks. Moderate gains in size and strength should be expected. This compound also has a tendency to increase appetite, which makes it a good choice for bulking.

Side effects are minimal with boldione, but can become more noticeable with doses above 1000mg/day. Side-effects may include increases blood pressure and oily skin. Overall, results and side-effects would be similar to that of boldenone, including lean mass gains with low bloating. Because this steroid is non-17aa there should be less concern about it negatively affecting the HDL/LDL ratio.

Although this compound can be used as a standalone, it is recommended to stack this compound with an already active steroid, as the high doses of boldione will likely saturate most of the steroid conversion enzymes.

Common Clones:

BOLD by IForce
EQ-Plex by Competitive Edge Labs (CEL)
BOLD 200 by IForce
EQ-Jet by Molecular Development
P-Bold by Proven Products


Related Discussion

The Official 1,4-AD (Boldione) Thread
Posted by Eric

References

“Criteria to distinguish between natural situations and illegal use of boldenone, boldenone esters and boldione in cattle: 1. Metabolite profiles of boldenone, boldenone esters and boldione in cattle urine.”

Bruno Le Bizec, Frédérique Courant, Isabelle Gaudin, Emanuelle Bichon, Blandine Destrez,
Robert Schilt, Rosa Draisci, Fabrice Monteau and François André
Steroids; Volume 71, Issues 13-14, December 2006, Pages 1078-1087


“An
in vitro study on metabolism of 17β-boldenone and boldione using cattle liver and kidney subcellular fractions”
R. Merlanti, G. Gallina, F. Capolongo, L. Contiero, G. Biancotto, M. Dacasto and C. Montesissa

“Pathology of the testicle and sex accessory glands following the administration of boldenone and boldione as growth promoters in veal calves”
Cannizzo, F.T.(Universita degli Studi di Torino (Italy)); Zancanaro, G.; Spada, F.; Mulasso, C.; Biolatti
Nov 2007 Veterinary science and hygiene

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