A reference work, not a recommendation to use: this profile describes mechanism and evidence and does not replace medical advice. The claims come from marketing and forums and are tested here, not endorsed.

Claims checked

  • Slows aging and extends life

    Not studied

    Longevity · healthy · Animal study

    Lifespan and healthspan extended only in worms, mice and monkeys [5]. In humans, there is no intervention study on aging; the assumed decline of taurine with age was not confirmed in several cohorts [6][7].[6][7]

  • More endurance and performance

    Small benefit

    Muscle & performance · healthy · Human, randomised

    Two meta-analyses found small to moderate effects (g 0.40 and 0.25, respectively); the certainty of evidence is low to very low [8][9].[8][9]

  • Lowers blood pressure

    Small benefit

    Heart & blood vessels · Patients: prehypertension and mixed populations · Human, randomised

    RCT in prehypertension: office systolic blood pressure −7.2 vs. −2.6 mmHg with placebo [10]; meta-analysis: systolic about −4 mmHg, diastolic about −1.5 mmHg [11].

  • Better blood glucose and blood lipid values

    Small benefit

    Energy & metabolism · mixed: healthy people and people with cardiovascular or metabolic disease · Human, randomised

    Meta-analysis of 25 RCTs: small reduction in fasting glucose and triglycerides, no effect on HDL cholesterol [11].

  • Better concentration and mental performance

    No benefit

    Cognition & focus · mixed: with and without cognitive impairment · Human, randomised

    Meta-analysis of seven RCTs with 402 participants: no significant effects on cognitive scores [12].

Mechanism of action

Evidence map: Taurine

Each line stands for a published finding; line style and color show where it comes from. The filter hides weaker evidence levels. Sources: see references.

Taurine is regarded as conditionally essential in humans; cells without taurine show pronounced disturbances. A review describes functions in antioxidation, energy metabolism, gene expression, ER stress, neuromodulation and calcium homeostasis and mentions the approval for the treatment of heart failure in Japan [1]. In human and bovine mitochondrial tRNAs, taurine is incorporated directly into modified uridines (5-taurinomethyluridine); this modification is missing in mutated tRNAs in the mitochondrial diseases MELAS and MERRF [2]. Mice lacking the taurine transporter (TauT) lose almost all taurine in heart and skeletal muscle; their endurance on the treadmill was reduced by more than 80%, while heart function was largely preserved [3]. After oral administration in eight healthy men, taurine reached its peak plasma concentration after about 1.5 hours, and the elimination half-life was about one hour [4].

The debate about taurine as an aging factor goes back to a 2023 study in Science: there, blood taurine declined with age in mice, monkeys and humans; taurine supplementation extended healthy lifespan and lifespan in mice and healthy lifespan in monkeys, and reduced cellular senescence, DNA damage and inflammation. In humans, there were only associations: lower levels went along with several age-related diseases [5]. A follow-up paper in Science, by contrast, found constant or rising taurine levels with age in three cohorts as well as in monkeys and mice, measured longitudinally and cross-sectionally, and inconsistent associations with health measures [6]. In 137 men aged 20 to 93 years, blood taurine was related neither to age nor to muscle mass, strength, performance or mitochondrial function [7].

For performance, a meta-analysis of ten studies shows a small to moderate benefit for endurance (Hedges g 0.40) [8]; a more recent meta-analysis of 23 randomized studies of single doses found a small effect (g 0.25) with low to very low certainty of evidence [9]. In an RCT with 120 people with prehypertension, taurine lowered blood pressure in office and long-term measurement and improved vasodilation; in the laboratory, it dampened TRPC3-mediated calcium influx in arteries [10]. A meta-analysis of 25 RCTs with mixed populations found small reductions in blood pressure, fasting glucose and triglycerides [11], and a meta-analysis of seven RCTs found no effect on cognition [12]. In mice and in cells from people with acute myeloid leukemia, leukemia stem cells use taurine from the bone marrow via TauT; inhibiting TauT slowed leukemia growth [13].

Targets

TargetTypeActionKey dataEvidence
Taurine transporter TauT (SLC6A6)TransporterBindingKnockout: muscle taurine almost completely lost (mouse) Animal study[3][13]
Mitochondrial tRNAs (taurinomethyl-uridine modification)OtherBinding Laboratory[2]
TRPC3 channel in vascular smooth muscle cellsIon channelInhibitor Laboratory[10]

Effect profile

Which signaling systems the compound affects according to current data. ↑ enhanced, ↓ dampened, ≈ modulated, ○ no effect; dots = evidence level.

  • Dopamineno data
  • Noradrenalineno data
  • Serotoninno data
  • Acetylcholineno data
  • Glutamate · AMPAno data
  • Glutamate · NMDAno data
  • GABAno data
  • Histamineno data
  • Orexinno data
  • Adenosineno data
  • Opioidsno data
  • Melatoninno data
  • Neurotrophinsno data
  • Blood flow↑ · better endothelium-dependent vasodilation and lower blood pressure in prehypertension (RCT)[10]
  • Nitric oxideno data
  • Energy metabolismmodulated · Component of mitochondrial tRNAs; markedly reduced endurance without the taurine transporter (mouse)[2][3]
  • Insulin · glucosemodulated · small reduction in fasting glucose in a meta-analysis with mixed populations[11]
  • Inflammation · oxidative↓ · less senescence, DNA damage and inflammation in animal models (mechanistic part of the study, species not specified in the abstract)[5]
  • Stress axisno data
  • Testosterone axisno data
  • Endocannabinoidsno data
  • Autophagy · senescenceno data
  • Immune systemno data
  • Lipid metabolismno data
  • Coagulation · fibrinolysisno data
  • Methylationno data

Routes of administration and bioavailability

How much of a compound reaches the blood or target tissue depends on the route into the body and on the dosage form. All routes of administration explained

  • Oral (swallowed) · powder, capsules, beverages; component of the normal diet

    absolute bioavailability not determined; plasma peak after ≈ 1.5 h (human)

    In eight healthy men, peak plasma concentration after about 1.5 hours, half-life about one hour [4]. In an RCT, plasma levels rose after several weeks of intake [10].

    Human, non-randomised

Human studies

  • Taurine levels and age (Science 2023)

    association analyses in humans, supplemented by animal experiments · healthy and people with age-related diseases

    Measured: Blood taurine, age-related diseases

    Result: Lower levels associated with several age-related diseases; increase after endurance exercise.[5]

    Human, non-randomised

  • Three cohorts, longitudinal and cross-sectional (Science 2025)

    cohort studies, longitudinal and cross-sectional · healthy (three cohorts)

    Measured: Blood taurine over the course of age

    Result: Taurine stayed the same or rose with age; inconsistent associations with health measures.[6]

    Human, non-randomised

  • Men aged 20 to 93 years

    cross-sectional study · healthy (physically active and inactive) · n = 137

    Measured: Blood taurine vs. age, muscle mass, strength, mitochondrial function

    Result: No association.[7]

    Human, non-randomised

  • Meta-analysis endurance

    meta-analysis of 10 studies · healthy · single dose to 2 weeks

    Measured: Endurance performance, time to exhaustion

    Result: Hedges g 0.40 (95% CI 0.12–0.67).[8]

    Human, randomised

  • Meta-analysis single dose

    meta-analysis of 23 randomized studies · healthy · n = 308 · single dose

    Measured: physical performance

    Result: g 0.25 (95% CI 0.10–0.39), GRADE low to very low.[9]

    Human, randomised

  • Prehypertension

    RCT, double-blind, placebo-controlled · Patients: prehypertension · n = 120 · 12 weeks

    Measured: Office and 24-hour blood pressure, vascular function

    Result: Office systolic blood pressure −7.2 vs. −2.6 mmHg, ambulatory −3.8 vs. −0.3 mmHg; better vasodilation.[10]

    Human, randomised

  • Meta-analysis metabolic syndrome

    meta-analysis of 25 RCTs · mixed (8 to 113 years, healthy and ill) · n = 1024 · 5 to 365 days

    Measured: Blood pressure, fasting glucose, triglycerides, HDL

    Result: Systolic −4.0 mmHg, diastolic −1.5 mmHg, glucose and triglycerides lowered, HDL unchanged; no increase in adverse effects.[11]

    Human, randomised

  • Meta-analysis cognition

    meta-analysis of 7 RCTs · mixed (with and without cognitive impairment) · n = 402

    Measured: cognitive test scores

    Result: No significant effect.[12]

    Human, randomised

Risks and warnings

  • Tolerability

    In a meta-analysis of 25 RCTs, adverse effects were not significantly more frequent with taurine than in the control groups [11]. Long-term data beyond one year are lacking.

    Human, randomised

  • Theoretical: leukemia

    In mice and in patient cells, taurine from the bone marrow promoted the growth of myeloid leukemias via TauT [13]. Whether supplemented taurine influences the risk in humans has not been studied.

    Animal study

Fact check: common claims

  • not supported

    “Taurine deficiency drives aging, taurine extends life”

    Life extension only in worms and mice, healthier lifespan in monkeys [5]. In humans, only associations, and the decline of taurine levels with age was not confirmed in other cohorts [6][7].

  • partly supported

    “Taurine increases endurance performance”

    Small effects in two meta-analyses, low-quality evidence [8][9].

  • partly supported

    “Taurine lowers blood pressure”

    One RCT in prehypertension [10] and one meta-analysis with mixed populations [11] show small reductions; hardly any data for people with normal blood pressure.

  • not supported

    “Taurine improves concentration and memory”

    A meta-analysis of RCTs found no effects on cognitive scores [12].

  • not supported

    “Taurine causes cancer”

    One finding shows that leukemia cells in mice use taurine from their environment [13]; there are no studies on taurine intake and cancer risk in humans.

Pharmacokinetics

Absorption
Oral; plasma peak after about 1.5 hours [4].
Half-life
About one hour in plasma (8 healthy men) [4].
Metabolism
Is incorporated into mitochondrial tRNAs [2]; cellular uptake via TauT [3]. Other degradation pathways not verified.
Entry into the brain
Not verified.

Legal status

Germany
Not verified.
EU
Not verified.
USA
Not verified.
Other countries
Japan: according to a review, approved as a drug for the treatment of heart failure [1].

Related compounds

Magnesiumtauratsame class (German only)

Open questions

  • Does blood taurine fall with age in humans, or does that depend on the cohort and measurement method?
  • Does taurine supplementation extend healthy lifespan in humans? Intervention studies are lacking.
  • How large is the blood pressure effect in people with normal blood pressure?
  • Does the leukemia finding matter for intake from outside the body?

References

  1. Schaffer S, Kim HW. Effects and mechanisms of taurine as a therapeutic agent. Biomol Ther (Seoul). 2018;26(3):225–41. doi:10.4062/biomolther.2017.251 · PubMed
  2. Suzuki T, Suzuki T, Wada T, Saigo K, Watanabe K. Taurine as a constituent of mitochondrial tRNAs: new insights into the functions of taurine and human mitochondrial diseases. EMBO J. 2002;21(23):6581–9. doi:10.1093/emboj/cdf656 · PubMed
  3. Warskulat U, Flögel U, Jacoby C, Hartwig HG, Thewissen M, Merx MW, et al. Taurine transporter knockout depletes muscle taurine levels and results in severe skeletal muscle impairment but leaves cardiac function uncompromised. FASEB J. 2004;18(3):577–9. doi:10.1096/fj.03-0496fje · PubMed
  4. Ghandforoush-Sattari M, Mashayekhi S, Krishna CV, Thompson JP, Routledge PA. Pharmacokinetics of oral taurine in healthy volunteers. J Amino Acids. 2010;2010:346237. doi:10.4061/2010/346237 · PubMed
  5. Singh P, Gollapalli K, Mangiola S, Schranner D, Yusuf MA, Chamoli M, et al. Taurine deficiency as a driver of aging. Science. 2023;380(6649):eabn9257. doi:10.1126/science.abn9257 · PubMed
  6. Fernandez ME, Bernier M, Price NL, Camandola S, Aon MA, Vaughan K, et al. Is taurine an aging biomarker? Science. 2025;388(6751):eadl2116. doi:10.1126/science.adl2116 · PubMed
  7. Marcangeli V, Cefis M, Hammad R, Granet J, Leduc-Gaudet JP, Gaudreau P, et al. Experimental evidence against taurine deficiency as a driver of aging in humans. Aging Cell. 2025;24(10):e70191. doi:10.1111/acel.70191 · PubMed
  8. Waldron M, Patterson SD, Tallent J, Jeffries O. The effects of an oral taurine dose and supplementation period on endurance exercise performance in humans: a meta-analysis. Sports Med. 2018;48(5):1247–53. doi:10.1007/s40279-018-0896-2 · PubMed
  9. Deng H, Song T, Yin M, Xu K, Zhong Y, Liu P, et al. Does one shot work? The acute impact of a single taurine dose on exercise performance: a meta-analytic review. Scand J Med Sci Sports. 2025;35(9):e70123. doi:10.1111/sms.70123 · PubMed
  10. Sun Q, Wang B, Li Y, Sun F, Li P, Xia W, et al. Taurine supplementation lowers blood pressure and improves vascular function in prehypertension: randomized, double-blind, placebo-controlled study. Hypertension. 2016;67(3):541–9. doi:10.1161/HYPERTENSIONAHA.115.06624 · PubMed
  11. Tzang CC, Chi LY, Lin LH, Lin TY, Chang KV, Wu WT, et al. Taurine reduces the risk for metabolic syndrome: a systematic review and meta-analysis of randomized controlled trials. Nutr Diabetes. 2024;14(1):29. doi:10.1038/s41387-024-00289-z · PubMed
  12. Cao Q, Nie Z, Liu Y, Xu J, Chen L, Han S. Effects of taurine supplementation on cognitive function: a systematic review and meta-analysis of randomised controlled trials. Int J Food Sci Nutr. 2025;76(4):370–80. doi:10.1080/09637486.2025.2499044 · PubMed
  13. Sharma S, Rodems BJ, Baker CD, Kaszuba CM, Franco EI, Smith BR, et al. Taurine from tumour niche drives glycolysis to promote leukaemogenesis. Nature. 2025;644(8075):263–72. doi:10.1038/s41586-025-09018-7 · PubMed
How this profile was checked

Last reviewed: 2026-10-24. All sources with a DOI or PMID were resolved automatically via Crossref or doi.org and PubMed.

Translated from the German profile (version of 2026-10-24); translation checked on 2026-10-26.

Checked

  • All references retrieved via PubMed; DOIs and PMIDs taken from the PubMed records.
  • Checked against the abstract: functions and approval in Japan for heart failure [1]; taurinomethyl uridines, MELAS/MERRF [2]; endurance −80%, heart compensates [3]; 8 men, plasma peak 1.5 h, half-life 1.0 h [4]; decline with age, lifespan and healthspan in mice, healthspan in monkeys, associations in humans [5]; three cohorts, constant or rising [6]; 137 men, no association [7]; 10 studies, g 0.40 [8]; 23 studies, N = 308, g 0.25, GRADE low to very low [9]; 120 participants, −7.2 vs. −2.6 mmHg, TRPC3, H2S [10]; 25 RCTs, 1024 participants, SBP −4.0, DBP −1.5 mmHg, no increase in adverse effects [11]; 7 RCTs, 402 participants, no effect [12]; TauT axis in leukemia [13].
  • Checked in the full text: mixed populations (8 to 113 years, healthy and ill) of the meta-analysis [11].
  • ClinicalTrials.gov: 212 entries for “taurine” (October 23, 2026).
  • Cross-reference according to guideline K1/G1/G12 on October 24, 2026: related magnesium-taurat added as “same class” (reverse link; magnesium-taurat links to taurin). The text does not mention magnesium taurate, hence no reference sentence.

Not verified

  • Legal status in Germany, the EU and the USA; the EFSA opinions on taurine in energy drinks (2009) and on health claims (2009) could not be retrieved and were therefore not used.
  • Exact figures on life extension in mice and on the monkey study in [5] (full text not accessible).
  • Case numbers of the cohorts in [5] and [6].

No dosages, no sources of supply. This information does not replace medical advice.

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