BR32
Optimizing
- Joined
- Nov 15, 2025
- Posts
- 394
- Reputation
- 273
Basic Pharmacology
Testosterone regardless of whether it is exogenous or endogenous gets converted into estradiol by the aromatase enzyme.
This is natural and beneficial-moderate E2 levels are essential for
- Muscle growth
- Joint lubrication
- LIbido and erectile function
- Mood stability
- Neuroprotection
However excess aromatization (especially from spikes in your test) can cause all of those nasty estrogenic side effects we all know
- Puffy nips or gyno
- Bloating and excess water retention
- Mood swings
- Fatigue
So you decided to run the common beginner cycle of 500 test e pinning 2x/week and 6.25mg aromasin EOD and now you’re wondering why you feel like shit a few weeks in despite "controlling your estrogen" with an AI.
The problem with that is that aromatization is not linear
Most guys assume more testosterone → proportionally more estrogen → need tons of AI
Thats wrong
Aromatase is rate limited
Once you flatten testosterone peaks E2 production stabilizes
So nuking aromatase repeatedly with high does AI use overshoots massively.
In fact low E2 is actually worse than moderately high E2 in most men
From an anabolic and looksmaxxing perspective tanked E2 is a disaster
When we tank E2 here is what happens
MPS goes down, IGF 1 signaling goes down, your libido tanks, your lipids get fucked, etc
Most guys assume more testosterone → proportionally more estrogen → need tons of AI
Thats wrong
Aromatase is rate limited
Once you flatten testosterone peaks E2 production stabilizes
So nuking aromatase repeatedly with high does AI use overshoots massively.
In fact low E2 is actually worse than moderately high E2 in most men
From an anabolic and looksmaxxing perspective tanked E2 is a disaster
When we tank E2 here is what happens
MPS goes down, IGF 1 signaling goes down, your libido tanks, your lipids get fucked, etc
Managing Your Estrogen
The problem with many of the cookie cutter cycles that get prescribed on .org are that they suck at actually managing your estrogen properly and avoiding uncessecary sides effects. Here's is what you should actually do to properly manage E2. - Pin every single day or at least every other day (This reduces aromatization compared to injecting once or twice a week when you spike your blood levels dramatically --> more aromatization) Low dose injections flatten the curve so when running a cycle like 250 or 300 test most people won't even need to use an AI)
- Don't use an AI "just in case" what you are doing is tanking your E2 without bloodwork and thats gonna make you depressed, have ED, and you'll have poor anabolism.
- Start your cycle with no AI
- Monitor symptoms weekly puffy nips? Possible gyno. Lots of water retention? Thats probably elevated E2.
- GET YOUR BLOODWORK DONE
- Only add an AI if you absolutely need it: Arimidex start at 0.125-0.25mg 2x/week. Aromasin 6.25-12.5mg 2x/week.
- Get lean-body fat increases aromatization
- If you get gyno get on raloxifene ASAP (I recommend buying before you start your cycle)
So you crashed your E2
Symptoms of crashed E2 include
Joint pain, zero libido, flat mood, dry skin, and brain fog, many misattribute these to high E2 or the gear itself.
If this happens stop AI use immediately and wait 5-10 days for low E2 sides to go away then reassess
Symptoms of crashed E2 include
Joint pain, zero libido, flat mood, dry skin, and brain fog, many misattribute these to high E2 or the gear itself.
If this happens stop AI use immediately and wait 5-10 days for low E2 sides to go away then reassess
Example Protocol
Test E 300mg/week, pinned daily with a slin pin (43mg/day)
No AI at start
Monitor symptoms and bloods
Add Aromasin at low dose if needed
Keep water and sodium consistent
Track weight and bloating
Takeaways
Estrogen is your friend in the right range
Daily pinning is essential
AI use should be a last resort not a default
Stay lean, do bloodwork, optimize
Test E 300mg/week, pinned daily with a slin pin (43mg/day)
No AI at start
Monitor symptoms and bloods
Add Aromasin at low dose if needed
Keep water and sodium consistent
Track weight and bloating
Takeaways
Estrogen is your friend in the right range
Daily pinning is essential
AI use should be a last resort not a default
Stay lean, do bloodwork, optimize