[Disclaimer: This article is for educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before beginning any research compound protocol.]
What is the most optimal SLU-PP-332 dosage per day, really?
I can tell you 99% of biohackers have the WRONG answer to this question!
They find a number on a forum, start dosing the compound blindly, and wonder why their results are inconsistent or next to nothing after a few weeks.
I have watched this pattern play out with nearly every research compound that enters the biohacking space, and SLU-PP-332 is no different.
In fact, nearly everyone — myself included, initially — was massively under-dosing this compound up until recently.
So what I AM going to do is explain exactly why this error occurred, and what the correct dose actually is.
Quick Takeaways
- SLU-PP-332 is a pan-ERR agonist that mimics key metabolic effects of exercise at the cellular level, and is arguably the greatest fat loss compound ever created.
- The mcg dosing ranges circulating in the community are massively incorrect, as proper human equivalent dose calculations from the preclinical data put effective dosing in the hundreds of milligrams per day.
- Timing matters because this compound interacts with mitochondrial biogenesis pathways that have a high degree of circadian sensitivity.
- This is a research compound, and not a supplement… so approach it with the same seriousness you would with any therapeutic peptide.
What SLU-PP-332 Actually Is
SLU-PP-332 is not a peptide, a SARM, nor a traditional small molecule hormone modulator.
It is a synthetic pan-ERR agonist, meaning it activates all three estrogen-related receptors: ERRα, ERRβ, and ERRγ.
These receptors are part of the nuclear receptor superfamily, and despite the name, they are NOT estrogen receptors in the classical sense (i.e. they do not bind estrogen).
They regulate mitochondrial function, oxidative metabolism, fatty acid oxidation, and energy expenditure at the transcriptional level.
You can think of ERRs as master regulators sitting upstream of your body’s capacity to generate and sustain energy.
When you exercise, ERRs are activated as part of the downstream signaling cascade driving your body’s adaptation to physical stress.
SLU-PP-332 triggers this same cascade chemically, which is why researchers have described it as an exercise mimetic.
The Mechanism Behind the Compound
SLU-PP-332 was developed at Saint Louis University — which is literally where the “SLU” comes from — and early preclinical work established its ability to activate all three ERR isoforms simultaneously.
When ERRα and ERRγ are activated, they upregulate the transcriptional coactivator known as PGC-1α (widely recognized as the master regulator of mitochondrial biogenesis).
More mitochondria means greater oxidative capacity, better fat utilization, improved endurance, and more efficient ATP production.
In preclinical mouse models, SLU-PP-332 administration produced measurable increases in running endurance and oxidative muscle fiber composition without the animals doing additional exercise.
While this is a remarkable finding, it does NOT mean the compound replaces training.
It means the compound engages the same molecular machinery that training engages, which has enormous implications for metabolic disease and performance optimization.
What the Research Actually Shows
Every published study on SLU-PP-332 to date has been conducted in animal models, not humans.
But don’t be so quick to dismiss it.
A lack of human trials is not proof of danger or ineffectiveness.
It simply means we are at the earlier stages of research timeline, while the preclinical data remains compelling enough that the research into SLU-PP-332 continues to advance.
Key findings from available preclinical research include:
- Significant improvements in exercise endurance in mouse models
- Activation of oxidative metabolism pathways in skeletal muscle
- Upregulation of genes associated with fat oxidation and mitochondrial function
- Demonstrated oral bioavailability in animal models
What we do NOT yet have is dose-response data from human clinical trials or long-term safety data in humans.
We also don’t have established pharmacokinetics in diverse human populations.
However, the real-world results from self-experimenters running proper doses are impossible to ignore — and I AM one of them!
SLU-PP-332 Dosage Per Day: The Real Framework
Nearly everyone in the community, including myself initially, was massively under-dosing this compound at first.
The mcg-range dosing that circulated early was based on a failure to properly calculate the human equivalent dose (HED) from the animal study data.
The lead researcher behind SLU-PP-332, Cyrielle Billon, used 50mg/kg injected intraperitoneally twice daily in mice in published studies (100mg/kg total daily).
Running that through standard body surface area HED conversion (dividing by 12.3 for the mouse-to-human factor) gives approximately 8.13mg/kg for humans.
For an 80kg person, this comes out to roughly 650mg per day.
I personally ran 400-800mg of SLU-PP-332 for three weeks, split into a morning dose and an afternoon dose, and the results were extraordinary.
The current framework based on proper dosing is as follows:
| Dosing Range | Context |
| 100-200mg/day | Conservative starting range; assessing individual response |
| 400mg/day | Mid-range; split AM and afternoon; most commonly reported in informed experimentation |
| 600-800mg/day | Higher end; experienced users with monitoring; Jay’s personal protocol |
| 800mg+/day | Exploratory territory; requires medical oversight and biomarker tracking |
WARNING: DO NOT interpret this table as a prescription or medical recommendation!
This is a framework for informed self-education built on the actual preclinical science.
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Timing: When to Take SLU-PP-332
SLU-PP-332 works through mitochondrial biogenesis and oxidative metabolism pathways that have known circadian rhythm sensitivity.
PGC-1α, the downstream target of ERR activation, follows a diurnal expression pattern in skeletal muscle.
Taking a compound driving PGC-1α expression in alignment with its natural circadian peak is just basic chronobiology.
So split your daily dose of SLU-PP-332 in half, with one half in the morning and the other half in the afternoon.
As long as you get your early morning dose in, it will work throughout the day — no need to time it around meals or fat-soluble food for absorption.
Cycle SLU-PP-332 8 weeks on / 8 weeks off, and make sure to replenish and support your mitochondria with targeted supplements post-cycle.
What High-Dose SLU-PP-332 Actually Feels Like
Here is what I personally experienced running 400-800mg of SLU-PP-332 for three weeks.
- Improved sleep
- Increased strength in the form of more firepower and torque generation
- Better vascularity and cardiovascular function
- More muscular density and leanness
- Higher cellular energy levels without the jitteriness of stimulants
- The ability to train harder and longer without fatigue
- Less rest needed between sets while training to positive muscle failure
All of the above happens when this research compound is dosed correctly.
You are producing ATP at a vastly higher rate compared to your baseline since your mitochondria are now operating at maximum efficiency.
I would go as far as to say the effect is comparable to 25-50mg of Primobolan or Anavar in terms of body recomposition, albeit without the side effects.
Common Mistakes I See People Making
Out of all the mistakes I see people make when dosing SLU-PP-332, here are the most frequent offenders:
- Dosing in mcg instead of mg is the biggest mistake
- No bloodwork before starting means you are flying blind on a compound with genuine biological potency
- Treating it like a supplement rather than the research chemical it is will cost you results and potentially put you at risk for side effects
- Stacking recklessly by adding SLU-PP-332 on top of multiple other compounds simultaneously makes it impossible to isolate positive or negative effects
- Running it without physician involvement means you are taking on an unnecessary risk — find an optimization-minded clinician who will work WITH you on this
In summation: start in the lower mg range, titrate up methodically, track your biomarkers, and document everything.
Safety, Risks, and Contraindications
Because human clinical trial data does not yet exist for SLU-PP-332, the full safety profile in humans is still being established through real-world application and ongoing research.
ERR activation is involved in certain cancer cell proliferation pathways, particularly in ERR-positive breast cancer cell lines.
This does not mean the compound causes cancer, but individuals with hormone-sensitive cancers or relevant personal or family history should approach this with extreme caution or avoid it entirely.
Cardiovascular stress markers should also be monitored given the compound’s effects on energy metabolism and cardiac muscle.
And liver enzyme monitoring (AST, ALT) is advisable given oral administration with hepatic metabolism.
SPECIAL NOTE FOR WOMEN:
ERR pathways intersect with estrogen signaling in ways that are still being characterized, and Monica and I have both noted that women’s hormonal and metabolic systems respond differently to compounds in this category.
Therefore, conservative protocols with rigorous monitoring are non-negotiable.
The Bottom Line: Sovereignty Over Your Biology
The most dangerous thing you can do with a research compound is take it without understanding its mechanism, without measuring your baseline data, and without the humility to update your position when new evidence emerges.
SLU-PP-332, when dosed correctly, is the greatest fat loss compound ever created.
The science behind ERR activation and its connection to mitochondrial biogenesis is some of the most important territory in metabolic optimization research today.
If you want to go deeper on research compounds, peptides, and optimization protocols backed by actual science and real-world application…
… get on my email list and explore the full education ecosystem at JayCampbell.com.
We are doing the work that mainstream medicine refuses to do.
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