L-Tyrosine vs Phenylpiracetam for energy
Short answer: For energy, more users report improvement with Phenylpiracetam — 95% of 126 reports, versus 89% of 119 for L-Tyrosine.
L-Tyrosine has 10 meta-analyses and 38 randomized trials on PubMed; Phenylpiracetam has 0 and 0.
Based on 802 reports about L-Tyrosine and 646 about Phenylpiracetam. Not medical advice.
| L-Tyrosine Supplement | Phenylpiracetam Supplement | |
|---|---|---|
| User score | 47 | 56 |
| Verdict | Mixed | Mostly positive |
| Positive of reports that state an outcome | 52% | 67% |
| Reports | 802 | 646 |
| Research | AResearch: Strong | DResearch: None |
| Meta-analyses / RCTs | 10 / 38 | 0 / 0 |
| Mainly used for | ||
| Weight loss % reporting improvement | — | 100% (2) |
| Appetite % reporting improvement | — | 50% (2) |
| Focus % reporting improvement | 80% (163) | 90% (205) |
| Energy % reporting improvement | 89% (119) | 95% (126) |
| Sleep % reporting improvement | 33% (9) | 30% (10) |
| Anxiety % reporting improvement | 56% (34) | 69% (29) |
| Mood % reporting improvement | 82% (125) | 85% (72) |
| Memory % reporting improvement | 83% (6) | 100% (20) |
| Performance % reporting improvement | 100% (4) | 100% (36) |
| Pain & inflammation % reporting improvement | 67% (3) | — |
| Libido % reporting improvement | 62% (8) | — |
| Hormones % reporting improvement | 100% (4) | — |
| Heart & lipids % reporting improvement | — | 0% (2) |
| Skin & hair % reporting improvement | 60% (5) | — |
| Common side effects | anxiety, insomnia, headache, jitteriness | tolerance, insomnia, headache, jitteriness |
| Typical dose reported | 500 mg / daily | 100 mg / 100mg 5 days a week with 2 days off or 200mg once a week |
L-TyrosineFull L-Tyrosine profile →
Latest review conclusion
18F-FET static parameters alone showed a comparably high sensitivity in the differentiation between brain tumour true progression and TRC. Combining static and kinetic parameters provided improved diagnostic performance.
Nucl Med Commun, 2022 ↗What a user said
“Tyrosine is just an excellent thing to add to any stack”
PhenylpiracetamFull Phenylpiracetam profile →
What a user said
“Phenyl was the only thing that really impacted me, but once took at 3pm and couldn't fall asleep until 9am the next day”
Related comparisons
Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate