M
mistake67
Iron
- Joined
- Feb 12, 2026
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Hi
Most of this thread will be assuming your on for your epiphyseal plates
what is aromatase inhibition?
aromatase is the enzyme that converts testosterone to estrogen (specifically e2). A high e2 levels causes:
Higher stress and emotional instability
physical effects (gyno, water retention, worse fat distribution and gain, acne)
Sexual issues ( erectile disfunction, lower sperm count, lower sex drive)
High Blood pressure, hemocrit count, clotting risk, worse insulin sensitivity,worse lipid profile.
Sleep apnea, less quality sleep, less REM, night wakings
And most importantly for most of yall-
E2 is the main drive for epiphyseal plate fusion
taking a aromatase inhibitor either deactivates or kills that enzyme (depending on which one you take )
————————————————————
E2 levels and controlling them
Typical Estradiol Ranges by Tanner Stage
-----------------
Artificial intelligence generated and personally estimated, not reliable dyor
Stage II (Early Puberty): 10 - 24 pg/mL
Stage III (Mid-Puberty): 10 – 35 pg/mL
Stage IV (Late Puberty): 25 – 45 pg/mL
Stage V (Adult): 30-?? pg/mL
-------------------
Low e2 levels are just as bad as high levels
Aromatase inhibitors where originally invented to mitigate breast cancer. So when you go searching up doses and protocol be careful
You want no more than a 20% decrease in e2
Which would be estimated response at these doses of the big 3
Letrozole
0.25mg every 3-4 days
0.5mg weekly
Anastrozole
0.25mg every 3-4 days
0.5mg twice weekly
Aromasin (what i take)
12.5mg every 3-4 days
6.25mg every other day
——————————————————
going over the three
Reversible- The ai binds to the enzyme and "de-activates" it. Upon discontinuing. The ai unbinds and unassociates , this causes an e2 "surge" , where the
Androgen load awaiting aromatization interacts.
Irreversible- the ai binds to the enzyme and kills it. This is why its called a suicidal inhibitor. Upon Discontinuing, the aromatase slowly rebuilds back up to normal levels.
Letrozole-
Letrozole is a reversible aromatase inhibitor, the most potent out of the three. Letz causes a quick , harsh drop in e2.
Letz carries harsher sides than others (although still small), because of its harsh qualities and cross interaction with other hormones, harsh on lipids.
Letz also lowers cortisol, does not directly damage the brain contrary to popular belief and obviously causes high overall test levels (20-30%).
Anastrozole-
Anastrozole is a reversible ai, in the middle of the three in terms of potentcy, ext.
Relatively low/no sides, mainly due to its low cross interaction.
Anastrozole only lowers aromatase, no effect on cortisol, brain, cns, ext.
aromasin-
imo aromasin is the best ai
It is irreversible, a slow,controlled drop and slow, controlled rise after discontinuing.
aromasin also binds to the androgen receptor at a 5% dht and is gentle on lipids.
Although, its steroid structure can slightly increase cholesterol
-AI alone without sufficient compounds = low E2 + insufficient bone growth . The problem isn't the low E2, it's low E2 without IGF-1/androgen signaling.
Thats all I got
Most of this thread will be assuming your on for your epiphyseal plates
what is aromatase inhibition?
aromatase is the enzyme that converts testosterone to estrogen (specifically e2). A high e2 levels causes:
Higher stress and emotional instability
physical effects (gyno, water retention, worse fat distribution and gain, acne)
Sexual issues ( erectile disfunction, lower sperm count, lower sex drive)
High Blood pressure, hemocrit count, clotting risk, worse insulin sensitivity,worse lipid profile.
Sleep apnea, less quality sleep, less REM, night wakings
And most importantly for most of yall-
E2 is the main drive for epiphyseal plate fusion
taking a aromatase inhibitor either deactivates or kills that enzyme (depending on which one you take )
————————————————————
E2 levels and controlling them
Typical Estradiol Ranges by Tanner Stage
-----------------
Artificial intelligence generated and personally estimated, not reliable dyorStage II (Early Puberty): 10 - 24 pg/mL
Stage III (Mid-Puberty): 10 – 35 pg/mL
Stage IV (Late Puberty): 25 – 45 pg/mL
Stage V (Adult): 30-?? pg/mL
-------------------
Low e2 levels are just as bad as high levels
Aromatase inhibitors where originally invented to mitigate breast cancer. So when you go searching up doses and protocol be careful
You want no more than a 20% decrease in e2
Which would be estimated response at these doses of the big 3
Letrozole
0.25mg every 3-4 days
0.5mg weekly
Anastrozole
0.25mg every 3-4 days
0.5mg twice weekly
Aromasin (what i take)
12.5mg every 3-4 days
6.25mg every other day
——————————————————
going over the three
Reversible- The ai binds to the enzyme and "de-activates" it. Upon discontinuing. The ai unbinds and unassociates , this causes an e2 "surge" , where the
Androgen load awaiting aromatization interacts.
Irreversible- the ai binds to the enzyme and kills it. This is why its called a suicidal inhibitor. Upon Discontinuing, the aromatase slowly rebuilds back up to normal levels.
Letrozole-
Letrozole is a reversible aromatase inhibitor, the most potent out of the three. Letz causes a quick , harsh drop in e2.
Letz carries harsher sides than others (although still small), because of its harsh qualities and cross interaction with other hormones, harsh on lipids.
Letz also lowers cortisol, does not directly damage the brain contrary to popular belief and obviously causes high overall test levels (20-30%).
Anastrozole-
Anastrozole is a reversible ai, in the middle of the three in terms of potentcy, ext.
Relatively low/no sides, mainly due to its low cross interaction.
Anastrozole only lowers aromatase, no effect on cortisol, brain, cns, ext.
aromasin-
imo aromasin is the best ai
It is irreversible, a slow,controlled drop and slow, controlled rise after discontinuing.
aromasin also binds to the androgen receptor at a 5% dht and is gentle on lipids.
Although, its steroid structure can slightly increase cholesterol
-AI alone without sufficient compounds = low E2 + insufficient bone growth . The problem isn't the low E2, it's low E2 without IGF-1/androgen signaling.Thats all I got
)
