Amino Acid
L-Taurine
An amino acid that supports nervous system regulation, relaxation, and cognitive balance.
KÖGN Health grades L-Taurine as B+ (Moderate evidence) and rates it 3.9 out of 5.
Last reviewed · June 2026
Primary effects
- Improved relaxation
- Reduced anxiety
- Cognitive balance
How it works
Modulates neurotransmission and supports calming effects in the nervous system.
Overview
Taurine plays a key role in regulating neuronal excitability and maintaining balance in the central nervous system. It is often used alongside stimulants like caffeine to smooth their effects and reduce overstimulation. While not a direct cognitive enhancer, it supports mental stability and stress resilience, contributing to sustained cognitive performance.
The evidence
Taurine is a conditionally essential amino acid that acts as a neuromodulator and antioxidant in the brain, with promising mechanistic and animal data (neurogenesis, GABA-A activity). In people, the cognitive evidence is mixed: a 2025 meta-analysis of randomised trials found no clear overall benefit on cognitive scores, with only scattered subgroup signals. It is a common energy-drink ingredient, usually paired with caffeine.
How to dose it
Supplement and energy-drink studies commonly use 500–2,000 mg per serving; some trials go higher.
When to take it
Both — used acutely (often with caffeine) and studied chronically.
Safety & side effects
Very well tolerated, with a strong safety record even at gram-level doses.
Who should avoid it
Few known issues for healthy adults. As ever, take care with the caffeine it is usually combined with, and discuss higher doses with a clinician if you are pregnant or have kidney disease.
References
Related ingredients
Graded entries that target the same cognitive goals.
Categories
Draft — the dose, safety and evidence notes on this entry were prepared from the published literature and are pending editorial and clinical review.
Educational information, not medical advice. The evidence grade is KÖGN’s editorial assessment of published research, not a health claim. Speak to a qualified clinician before changing what you take.