L-Theanine vs Selank for anxiety
Short answer: For anxiety, more users report improvement with Selank — 97% of 112 reports, versus 91% of 1289 for L-Theanine.
L-Theanine has 18 meta-analyses and 78 randomized trials on PubMed; Selank has 0 and 2.
Based on 3,475 reports about L-Theanine and 383 about Selank. Not medical advice.
| L-Theanine Supplement | Selank Peptide | |
|---|---|---|
| Users say it helped | 65%helped1,807 reports · high confidence | 75%helped138 reports · high confidence |
| Verdict | Mostly positive | Mostly positive |
| Research | AResearch: Strong | CResearch: Limited |
| Meta-analyses / RCTs | 18 / 78 | 0 / 2 |
| Mainly used for | ||
| Anxiety % reporting improvement | 91% (1289) | 97% (112) |
| Focus % reporting improvement | 88% (501) | 86% (36) |
| Sleep % reporting improvement | 78% (370) | 90% (10) |
| Mood % reporting improvement | 77% (223) | 90% (39) |
| Energy % reporting improvement | 68% (97) | 100% (4) |
| Common side effects | drowsiness, vivid dreams, fatigue, headache | headache, tolerance, injection site, tingling |
| Typical dose reported | 200 mg / bedtime | Not listed |
L-TheanineFull L-Theanine profile →
Latest review conclusion
This meta-analysis provides evidence that theanine plus caffeine, and theanine alone, could be beneficial for cognitive and mood outcomes. More research using tea beverages or tea-equivalent bioactive doses and research in free-living participants is needed.
Nutr Rev, 2025 ↗What a user said
“This morning was my first time taking this combination along with my other daily vitamins and wow, what a difference it has made in my overall mood and anxiety!”
SelankFull Selank profile →
What a user said
“Selank has improved my anxiety immensely, and am able to focus on things clearly.”
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