RESEARCH MONOGRAPH · KDC-MN-182

Taurine

May 9, 2026 Kodiac biolabs Research Revised May 30, 2026 2 min read

Our opinion on this compound

85/100

One of the most underrated metabolic and CNS compounds we have, and the 2023 longevity paper finally got people paying attention

Taurine is one of those compounds that's been hiding in plain sight forever. It's a sulfonic acid (not strictly an amino acid because of the sulfonate group), one of the most abundant free amino acids in mammalian tissues, particularly concentrated in heart, brain, retina, and skeletal muscle. It's been in energy drinks for decades and treated as a nutritional afterthought, and that framing has been wrong.

The Yadav lab 2023 Science paper changed the conversation. Taurine supplementation extended healthspan and lifespan in middle-aged mice (by maybe 10-12% median lifespan), and the same paper showed that circulating taurine declines substantially with age in multiple species including humans. That's not just one paper either, the supporting cross-species data on taurine decline and the metabolic effects is solid. For an endogenous compound that's been treated as a footnote for 40 years, that's a genuinely big result.

Mechanism is multi-target and that's part of what makes taurine interesting. Bile acid conjugation is the boring part. The interesting parts are osmoregulation, calcium handling in cardiac myocytes (taurine is a real antiarrhythmic with effects on calcium overload and reactive oxygen species), GABA-A agonism (taurine is a weak full agonist at low-affinity GABA-A sites and a partial agonist elsewhere), glycine receptor activity, antioxidant action via taurochloramine, mitochondrial function (taurine is required for tRNA modification at mt-tRNA-Leu, which is why taurine deficiency causes the MELAS-like phenotype), and modulation of insulin secretion.

Clinical evidence is broader than people assume. Cardiac literature is substantial, with effects on congestive heart failure, hypertension, and arrhythmia at 1-3g daily. Anxiety and sleep signals exist at higher supplemental doses. Some evidence for liver function, glucose handling, and exercise endurance. None of it is FDA-approval level but the breadth of consistent signal is unusual.

Sourcing-wise taurine is one of the cleanest supplement compounds available. Synthetic production is mature, pharmacopoeia-grade material is cheap, HPLC purity is essentially standard. Bulk taurine from reputable suppliers is one of the easier QC stories in this category.

Safety profile is exceptional. Endogenous at multi-gram body pool, no toxicity signal at multi-gram supplemental doses, wide therapeutic window.

What we like: real mitochondrial pharmacology, real cardiac data, the longevity signal, and the cleanest sourcing in the amino acid category. What we dont like: that it took until 2023 for the longevity work to put taurine on the map for most researchers, and the supplement industry still mostly markets it as an energy-drink ingredient.

Evidence: 78
Mechanism: 82
Reliability: 78
Safety: 95
Sourcing: 92
Value: 92
Signal: 80
Staying power: 85

Plain-language summary Intrigue 60 / 100

Taurine is a sulfonate amino acid abundant in heart, retina, and brain. Conditional rather than essential (the body makes it from cysteine). Has cardioprotective, anti-inflammatory, and GABAergic effects. Found in energy drinks where the contribution to performance is contested. Not stocked by Kodiac. This monograph is provided for research and educational reference.

Intrigue 0–100 blends mechanism novelty, evidence strength, and translational potential. Kodiac editorial, not peer-reviewed.

Conditional amino acid / sulfonate

An endogenous sulfonate amino acid with osmolyte, calcium-handling, and bile acid conjugation roles, recently associated with longevity in animal models.

Abstract

Taurine (2-aminoethanesulfonic acid; CAS 107-35-7; molecular formula C2H7NO3S; molecular weight 125.15) is an endogenous sulfonate "amino acid" (taurine has a sulfonate group rather than a carboxylate) with widespread tissue distribution and multiple physiological roles: bile acid conjugation, osmotic regulation, calcium handling in cardiac tissue, and modulation of GABA and glycine neurotransmission. Plasma taurine declines with age. A 2023 Science paper (Singh et al.) demonstrated that taurine supplementation extends lifespan and healthspan in mice, monkeys, and worms; the result generated significant interest in taurine as a longevity intervention. Reported research dose ranges in the literature are described in the source publications. Excellent safety profile.

Mechanism of action

Multiple roles: bile acid conjugation, osmolyte, calcium handling, GABA/glycine modulation. Lifespan extension in mice and monkeys.

Reported research dose ranges

Reported research dose ranges in the literature.

References

Singh P, et al. Taurine deficiency as a driver of aging. Science 2023.

Read the full monograph

Available as a research-use-only PDF download. Note: PDFs for newly added compounds may take a few hours to propagate after this article was published.

KDC-MN-182

The full reference document is provided strictly for research use only. It reports research dose ranges from the published literature, not instructions for use in humans or animals.

Download PDF →

FOR RESEARCH USE ONLY. Not for medical, diagnostic, or therapeutic purposes. Not for human consumption. All information is provided for research and educational purposes only.

Kodiac sells research compounds for investigative use only.

Taurine

Abstract

Mechanism of action

Reported research dose ranges

References

Read the full monograph

Quick actions

Categories

Help and policies

Abstract

Mechanism of action

Reported research dose ranges

References

Read the full monograph

Adjacent monographs