Jarrow Formulas
Phosphatidylserine PM Review
Evening PS formula targeting cortisol and sleep quality
Last updated: October 10, 2026 · Editorial review
About the score: the 7.9/10 and the stars are computed, not chosen — four axes worth ten points, every input printed on this page. The full breakdown is in How This Score Was Built below, and the method is on our About page. It is not a laboratory result and not an average of user ratings.
Quick Summary
Our Verdict
Pros
- ✓Evening-specific formulation timing
- ✓PS reduces cortisol — addresses root cause of poor sleep
- ✓Jarrow Formulas: trusted brand with strong QC
- ✓Also contains sleep-supportive melatonin
Cons
- ✗Niche product — hard to find in stores
- ✗More expensive than standalone PS
- ✗Melatonin dose in some formulas may be too high
Best For
Stressed individuals whose cortisol remains elevated in the evening, disrupting sleep onset and quality.
What Is Phosphatidylserine PM?
Phosphatidylserine PM is a sleep cognitive recovery supplement manufactured by Jarrow Formulas. It's designed for stressed individuals whose cortisol remains elevated in the evening, disrupting sleep onset and quality.
The formula is positioned as evening ps formula targeting cortisol and sleep quality. In this comprehensive review, we examine each ingredient against the published clinical literature, evaluate the dosing accuracy, and provide an honest assessment of whether Phosphatidylserine PM is worth your investment in 2026.
Key Ingredients & Scientific Evidence
| Ingredient | Dose | Evidence | Effect |
|---|---|---|---|
| Phosphatidylserine (PS) | 200mg | Strong | Evening cortisol reduction, sleep quality, cognitive recovery |
| Melatonin | 0.5mg | Strong | Circadian rhythm, sleep onset |
How Does Phosphatidylserine PM Work?
Phosphatidylserine PM works through multiple synergistic mechanisms targeting the primary cognitive domains it's designed to support. The formula from Jarrow Formulas combines ingredients that work on neurotransmitter synthesis, cerebral blood flow, neuronal membrane health, and mitochondrial energy production.
The ingredient profile targets sleep cognitive recovery via Phosphatidylserine (PS), Melatonin — compounds with established mechanisms in peer-reviewed literature. Full effects typically develop over 2-8 weeks of consistent daily use.
How This Score Was Built
7.9/10 = the four axes below, added up. Every input is printed on this page, so you can check the arithmetic.
2 of 2 actives carry their own numeric dose.
Per-ingredient evidence as rated in the table above: 2 strong.
$0.77 per serving against a category median of $0.77 across 14 products we list.
Some caution given, but thin on specifics.
⛔ What this does not measure: whether the product works. We do not run assays and we do not dose people. The full method is on our About page →
Side Effects & Safety
Generally very safe. PS well-tolerated. Low melatonin dose avoids grogginess. Avoid soy if allergic (choose sunflower PS).
* Always consult a qualified healthcare provider before starting any supplement regimen, especially if you are pregnant, nursing, have a medical condition, or take prescription medications.
Who Should (and Shouldn't) Buy Phosphatidylserine PM?
✓ Good For
- •Evening-specific formulation timing
- •PS reduces cortisol — addresses root cause of poor sleep
- •Jarrow Formulas: trusted brand with strong QC
- •Also contains sleep-supportive melatonin
✗ Not Ideal For
- •Niche product — hard to find in stores
- •More expensive than standalone PS
- •Melatonin dose in some formulas may be too high
Price & Value for Money
At $0.77 per serving, Phosphatidylserine PM is very affordable in absolute terms. Against the sleep cognitive recovery products we list, it scores 0.9 out of 2 on cost: $0.77 per serving against a category median of $0.77 across 14 products we list.
Phosphatidylserine PM vs. Competitors
| Metric | Phosphatidylserine PM(this) | Magnesium Glycinate | Sleep Stack - Melatonin + L-Theanine |
|---|---|---|---|
| Overall (computed) | 7.9/10★ | 7.3/10 | 7/10 |
| Dose transparency | 3/3 | 3/3 | 3/3 |
| Evidence | 3/3 | 3/3 | 3/3 |
| Cost rating | 0.9/2★ | 0.3/2 | 0/2 |
| Risk disclosure | 1/2 | 1/2 | 1/2 |
| Monthly Cost | $22.99★ | $34.99 | $55 |
Our Final Verdict
Phosphatidylserine PM
Jarrow's PS-PM is a specialized evening formula that uses phosphatidylserine's cortisol-lowering properties to improve sleep onset and cognitive recovery overnight.
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