Phosphatidic Acid
A phospholipid that activates mTOR directly rather than through the amino-acid or insulin routes. One of the few supplements with a plausible, specific hypertrophy mechanism and human trials to test it.
How Phosphatidic Acid actually works
Binds the FRB domain of mTOR directly and promotes mTORC1 assembly and signalling, which is a genuinely separate input from leucine sensing or insulin. Mechanical loading generates endogenous phosphatidic acid in muscle via phospholipase D, so the supplement is attempting to add to a signal training already produces.
Phosphatidic Acid quick facts
| Suggested dose | 750 mg daily, taken pre-workout on training days in most trials. |
| How often | daily |
| Who it's for | Advanced trainees who already have protein, creatine and training dialled in. |
✅ Clinically validated
- Randomised, placebo-controlled trials alongside resistance training report modest gains in lean mass and strength over 8 weeks versus placebo.
- Effect sizes are small and several trials come from groups with industry ties. A meta-analysis found a real but marginal effect on lean mass.
- It does not approach creatine or adequate protein intake in effect size, and should not be bought as if it does.
📊 Correlative data
- Mechanical loading raises endogenous phosphatidic acid in muscle, which is the observation the supplement was built from.
🧪 Theoretical / extrapolated benefits
- Binds mTOR directly and promotes mTORC1 signalling — a distinct input from leucine or insulin, which is the argument for stacking rather than substituting.
These tiers tell you how much human evidence exists — not how well something works. This is the research space, and most of what’s in here is new rather than disproven. Something sitting at “theoretical” usually means nobody has funded the trial, not that the trial was run and failed.
The trap runs the other way too: something can be clinically validated and still do very little for you specifically. A statistically significant result in a study population is not a promise about your body.
- ✅ Clinically validated — human randomised trials or meta-analyses support it. The strongest footing available.
- 📊 Correlative — observational or epidemiological data. Suggestive, and genuinely useful for direction, but it cannot establish cause.
- 🧪 Theoretical / mechanistic — the mechanism is understood and often demonstrated in cells or animals, and the human trial doesn’t exist yet. Unproven is not the same as ineffective. Plenty of what’s standard practice today sat here five years ago.
✗ is a safety flag, not a grade. Where you see it, the concern is harm — not a disappointing trial. A compound tested for one purpose and found not to help there can still be worth studying somewhere else, so a negative result never gets rendered as a cross. It sits alongside the tier, because something can be both well-studied and genuinely risky.
My job is to tell you which one you’re looking at, and let you make the call. Grading something low isn’t me dismissing it — it’s me refusing to oversell it. This is the research space, and being able to reason forward from a mechanism matters as much as waiting for the trial.
750 mg daily, pre-workout on training days in most trials. Set expectations properly: the meta-analysed effect on lean mass is real and small, and it sits far below creatine, adequate protein or the training itself. It is a marginal addition for people whose basics are already handled, not a substitute for any of them. Soy-derived, which matters if you avoid soy. No meaningful interaction profile, though anyone on an mTOR inhibitor such as rapamycin or sirolimus is taking a drug this is designed to oppose.
Phosphatidic Acid — safety & side effects
- Well tolerated; GI upset is the main report.
- Usually soy-derived — relevant if you avoid soy.
- Long-term safety has not been characterised — the trials run weeks to months, not years. That is a real limit on what anyone can tell you about daily use for a decade. The trial base is small and mostly industry-funded, which is a reason to be modest about the effect size rather than worried about harm.
Not medical advice. If you take prescription medication or have a diagnosed condition, check this against it with a pharmacist or doctor — pharmacists are underused and free.
Where to get Phosphatidic Acid
Find Phosphatidic Acid on iHerb →Get the complete breakdown for Phosphatidic Acid — inside the Academy alongside the full interactive Vault.
Unlock in the Academy — $10/mo →- When to take it, and what to take it with
- Which form actually absorbs
- Who it's worth it for
- Coach Cam's stacks and notes
Get the complete breakdown for Phosphatidic Acid — inside the Academy alongside the full interactive Vault.
Unlock in the Academy — $10/mo →Bloodwork to run alongside Phosphatidic Acid
Run these before you start, and again after 8–12 weeks. A baseline you didn’t take is one you can never go back for.
| Marker | What it’s watching for |
|---|---|
| Complete Blood Count (CBC) with Differential | Haemoglobin sets your ceiling for endurance work |
| Ferritin | Low iron limits performance long before anaemia shows |
| Total Testosterone | Drops under genuine overreaching |
| Comprehensive Metabolic Panel (CMP) | Kidney and electrolytes under heavy training load |
The Athletic Performance & Recovery panel covers these in one order — 12 markers, $207.90 with the discount applied.
Check results you already have → · All 102 markers A–Z
Phosphatidic Acid — frequently asked questions
What is Phosphatidic Acid?
A phospholipid that activates mTOR directly rather than through the amino-acid or insulin routes. One of the few supplements with a plausible, specific hypertrophy mechanism and human trials to test it.
What is the suggested dose of Phosphatidic Acid?
750 mg daily, taken pre-workout on training days in most trials. This is a general reference for education only — statements have not been evaluated by the FDA and this is not medical advice.
Where can I find Phosphatidic Acid dosing and the full breakdown?
The suggested dose and the full evidence — clinical, correlative and theoretical — are on this page. What's inside the Academy is when to take it, which form actually absorbs, the brand worth buying and Coach Cam's stacks.
Where can I buy Phosphatidic Acid?
Coach Cam sources Phosphatidic Acid from vetted, top-rated brands on iHerb — use the buy link on this page.
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