Jacked Factory
Lean PM Review
Stimulant-free nighttime fat burner with melatonin and L-Theanine
Last updated: October 10, 2026 · Editorial review
About the score: the 7.1/10 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
- ✓Fully transparent label with exact doses
- ✓Clean formula — no stimulants or unnecessary additives
- ✓Affordable compared to premium sleep-fat burning formulas
Cons
- ✗No HGH-supportive compounds
- ✗Missing cortisol suppression for stress-driven sleep issues
- ✗Green tea at this dose has limited overnight thermogenic effect
Best For
Those wanting a simple, transparent nighttime formula to support sleep and mild thermogenesis.
What Is Lean PM?
Lean PM is a sleep cognitive recovery supplement manufactured by Jacked Factory. It's designed for those wanting a simple, transparent nighttime formula to support sleep and mild thermogenesis.
The formula is positioned as stimulant-free nighttime fat burner with melatonin and l-theanine. In this comprehensive review, we examine each ingredient against the published clinical literature, evaluate the dosing accuracy, and provide an honest assessment of whether Lean PM is worth your investment in 2026.
Key Ingredients & Scientific Evidence
| Ingredient | Dose | Evidence | Effect |
|---|---|---|---|
| Melatonin | 3mg | Strong | Sleep onset, circadian rhythm synchronization |
| L-Theanine | 200mg | Strong | Relaxation, sleep quality without sedation |
| Green Tea Extract (decaf) | 400mg | Moderate | EGCG thermogenesis, overnight fat oxidation support |
How Does Lean PM Work?
Lean PM works through multiple synergistic mechanisms targeting the primary cognitive domains it's designed to support. The formula from Jacked Factory 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 Melatonin, L-Theanine, Green Tea Extract (decaf) — 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
7.1/10 = the four axes below, added up. Every input is printed on this page, so you can check the arithmetic.
3 of 3 actives carry their own numeric dose.
Per-ingredient evidence as rated in the table above: 2 strong, 1 moderate.
$1.00 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
Very well tolerated. Melatonin may cause vivid dreams or morning grogginess in some users.
* 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 Lean PM?
✓ Good For
- •Fully transparent label with exact doses
- •Clean formula — no stimulants or unnecessary additives
- •Affordable compared to premium sleep-fat burning formulas
✗ Not Ideal For
- •No HGH-supportive compounds
- •Missing cortisol suppression for stress-driven sleep issues
- •Green tea at this dose has limited overnight thermogenic effect
Price & Value for Money
At $1 per serving, Lean PM is reasonably priced in absolute terms. Against the sleep cognitive recovery products we list, it scores 0.5 out of 2 on cost: $1.00 per serving against a category median of $0.77 across 14 products we list.
Lean PM vs. Competitors
| Metric | Lean PM(this) | Resurge |
|---|---|---|
| Overall (computed) | 7.1/10 | 7.4/10★ |
| Dose transparency | 3/3 | 3/3 |
| Evidence | 2.6/3★ | 2.2/3 |
| Cost rating | 0.5/2★ | 0.2/2 |
| Risk disclosure | 1/2 | 2/2★ |
| Monthly Cost | $30★ | $49 |
Our Final Verdict
Lean PM
Lean PM is a clean, straightforward nighttime fat burner — melatonin for sleep initiation, L-Theanine for relaxation, and green tea extract for thermogenic support while you sleep. It's an honest product with transparent dosing, which is rarer in this category than it should be. The limitation is scope rather than quality: 400mg of decaffeinated green tea is a modest overnight thermogenic lever, and nothing in the formula addresses the cortisol side of sleep, so high-stress users may never reach the restorative deep sleep where HGH release and fat oxidation actually peak.
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