Phosphatidic Acid (PA)
Solid evidence for muscle growth. Not a miracle worker, but genuinely useful for the right person.
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Verdict
6/10 Promising
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Evidence
Grade B / 100+ Studies
Norans Kepals, Independent Researcher & Supplement Expert
March 1, 2026
The No-BS Summary
8 things. 60 seconds. Everything you need.
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WHAT IT DOES
mTOR activator. The signaling lipid for muscle growth.
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DOES IT WORK?
mTOR signaling lipid with a couple positive trials for lean mass gains when combined with resistance training, but evidence is still thin.
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HOW MUCH TO TAKE
750mg daily
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COST
Premium. $50-80/month. Make sure the evidence backs the spend.
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FIRST 24 HOURS
Don't expect miracles on day one. It's building in your system.
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AFTER A FEW WEEKS
Give it 4-8 weeks for full effects. Patience pays.
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SAFETY
Safe for most people. No red flags at normal doses.
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HOW IT FEELS
Enhanced response to training. Better gains.
2The Breakdown
Quick Answers
Dose-Response Curve
How effective is phosphatidic acid (pa) at different doses? Here's what the research shows.
Effectiveness %
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25
50
75
100
MIN 250mg
SWEET SPOT 750mg
PLATEAU 1.0g
Dose (mg)
0-34%
Sub-therapeutic
<250mg
34-80%
Effective
250mg-750mg
~80%
Optimal
750mg
80%
Diminishing
>1.0g
Moderate confidenceBased on clinical data + estimates
Source: Joy et al., 2014, J Int Soc Sports Nutr; Hoffman et al., 2012Bottom line: Most research uses 750mg daily. Below 250mg, you're probably wasting money. Above 1.0g, you're not getting extra benefit.
Dosing Guide
When
As directed
How
750mg daily
Food
With or without food
Onset & Feel
WEEKS
Muscle building effects over 8+ weeks.
Enhanced response to training. Better gains.
Cycle
As needed
How to Take It
Phosphatidic Acid (PA) comes in several formats. Pick what fits your lifestyle.
Capsules/Tablets
Pre-measured doses, easy to take.
✓ Convenient✓ No taste✓ Portable✗ More expensive✗ May need multiple
Powder
Mix with water or a shake.
✓ Cheapest✓ Flexible dosing✗ Needs mixing✗ Taste varies
Softgels
Oil-based for fat-soluble nutrients.
✓ Better absorption for fats✓ No taste✗ Larger pills
Pick this:
Capsules for convenience, powder for value.
Skip this:
Check for unnecessary fillers and additives.
Delivery affects convenience and cost, not usually effectiveness.
Did you know?
Many studies and counting.
3Deep Dive
The Science, Simplified
For those who want the full picture
Based on 10 human trials with 70% consistency.
Scientific Consensus
40/10
Trust Signals
Grade B
Evidence
50+
Studies
30
Human Trials
0
Meta-analyses
👍 Strong evidence. Most claims hold up under scrutiny.
Mechanism of Action
Mechanism under research.
Research Summary
Scientific consensus: 40/10. Based on 10 human trials with 70% consistency.
Consensus: 40/10LIMITED Evidence
Origins & Manufacturing
Where does phosphatidic acid (pa) come from? Let's get nerdy.
How It's Made
Manufacturing process varies by supplier.
What to Look For
✓ Third-party tested✓ GMP certified
Drug & Supplement Interactions
4For You
Is Phosphatidic Acid (PA) right for YOU?
Get a personalized verdict based on your health profile.
Products with Phosphatidic Acid (PA)
Supplements that contain this ingredient
Medical Disclaimer
This content is for informational purposes only and is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any supplement regimen, especially if you have medical conditions or take medications. IngredientMD does not endorse any specific products.