Taurine Supplement: Benefits, Aging Claims and Evidence

Quick answer

Taurine supplement, in short: Taurine is an amino acid, and a much-discussed 2023 paper in Science reported that supplementing it made animals healthier for longer and extended the lifespan of mice and worms [1]. There is no human evidence that taurine extends lifespan. Two 2025 papers also found that taurine levels did not simply fall with age in people [2][3], and a pooled analysis of trials found no clear effect on thinking scores [4]. We rate the evidence D for aging claims: strong animal data, small human trials.

What is taurine?

Taurine is an amino acid, a small building block used in the body. It is sold as a supplement and added to foods and drinks [5]. This page is about taurine as a supplement for aging-related goals. It doesn’t cover pet products, energy drinks or other uses.

Taurine and aging: what the 2023 Science paper found

The researchers found that blood taurine fell with age in mice, monkeys and humans. Giving taurine back raised health span (the years of healthy living) and lifespan in mice, and health span in monkeys. In humans, lower taurine was linked to several age-related diseases, but that is an association, and the authors themselves said human trials were needed to find out whether taurine deficiency drives aging [1]. PubMed · DOI

Do taurine levels really fall with age in people?

Two later papers say it is not that simple:

• NIH-led study (2025). Blood taurine rose or stayed the same with age in three separate human groups, and in monkeys and mice followed over time. Links with health measures varied a lot between people [2]. PubMed · DOI
• 137 men aged 20 to 93 (2025). Blood taurine was not linked to age, muscle mass, strength, physical performance or mitochondrial (cell energy) function [3]. PubMed · DOI

Taurine benefits: what might it help with?

Possible benefit	Rating	In plain words
Living longer	Early (animal or lab only)	Lifespan rose in mice and worms. No human trial has tested this [1]
Healthy years in later life (health span)	Early (animal or lab only)	Better health measures in mice, worms and monkeys. Human findings are observational and contested [1][2][3]
Antioxidant blood markers in older women	Early	One 24-woman trial saw an antioxidant enzyme level rise. These are lab markers, not health results [6]
Thinking and memory	No clear benefit	A pooled analysis of 7 trials (402 people) found no significant effect on cognitive scores [4]

Ratings describe how good the research is, not a promise that it will work for you.

What the research says

• Small trial in women aged 55 to 70. 24 women took 1.5 g of taurine or a placebo (starch) for 16 weeks. Taurine and an antioxidant enzyme (superoxide dismutase) rose in the taurine group, and a marker of oxidative damage (malondialdehyde) rose only in the placebo group. It is a small trial that measured blood markers, not health outcomes [6]. PubMed · DOI
• Thinking and memory (2025 meta-analysis). Seven randomized trials with 402 people found no significant effect of taurine on cognitive scores. The authors concluded there is not enough evidence to support taurine for improving cognition [4]. PubMed · DOI

The main limits: the exciting lifespan results are from animals, and the human trials are small and short.

Amounts and how people take it

These are amounts used in studies, not recommendations. We don’t recommend a dose.

• Small trial in women: 1.5 g a day for 16 weeks [6].
• Safe-intake review: a 2008 risk assessment judged the evidence for no adverse effects to be strong for supplemental taurine up to 3 g a day in healthy adults. Higher intakes have been tested, but it said the data were not enough to be confident about long-term safety [5]. PubMed · DOI
• Timing and forms: the sources we checked don’t give a firm rule.

Side effects, interactions and who should check first

The 2008 risk assessment found no systematic pattern of adverse effects in human trials of taurine [5]. That was a 2008 review of healthy adults, so it can’t tell us about every medicine or health condition.

Who should check with a doctor or pharmacist first

Check with a doctor or pharmacist first if you:

• take any regular medicine, because we found no interaction data
• are pregnant or breastfeeding, or planning to be, because the safe-intake review covered healthy adults
• have a long-term condition, especially kidney or liver problems
• are thinking of more than 3 g a day, which is above the level the review called well supported [5]

Where to buy

Taurine is a cheap, simple ingredient, so the label matters more than the brand. Look for plain taurine with the amount in mg or g per serving, no long list of extras, and a stated third-party testing certificate you can check. Work out the price per daily dose rather than comparing pack prices. We don’t pick brands on this page.

FAQ

Does taurine extend lifespan?

In mice and worms, yes, according to a 2023 Science paper [1]. In people, no one has tested it, and two 2025 papers found that blood taurine did not simply fall with age [2][3]. So there is no human evidence that a taurine supplement extends life.

What is the link between taurine and aging?

A 2023 paper reported that blood taurine falls with age and that supplementing it improved health span in animals [1]. Later human studies did not confirm the fall: taurine rose or stayed steady with age in three groups [2], and was not linked to age in 137 men [3].

How much taurine do studies use per day?

A small trial in 24 women aged 55 to 70 used 1.5 g a day for 16 weeks [6]. A 2008 risk assessment found strong evidence of no adverse effects at supplemental intakes up to 3 g a day in healthy adults [5]. These are not recommendations.

Is taurine good for you?

For healthy adults, a 2008 review found strong evidence of no adverse effects up to 3 g a day [5]. That is about safety, though, not benefit. A pooled analysis found no clear effect on thinking scores [4], and we rate the aging evidence D.

Do taurine levels fall as we age?

Not reliably, according to two 2025 papers. Taurine rose or stayed unchanged with age in three human groups [2], and was not linked to age in 137 men [3]. The 2023 paper had reported a fall [1], so the question is still debated.

Related pages

• Glycine: another amino acid
• Creatine: a supplement with much stronger human evidence
• Longevity supplements for beginners: where this fits in a beginner’s routine
• All supplements A-Z

Talk to your doctor

This page is for general information and is not medical advice. Speak to a doctor or pharmacist before starting any supplement, especially if you are pregnant or breastfeeding, take any medicine, or have a health condition.

References

We cite only studies and official pages we checked against PubMed, the publisher or the agency’s own site. The A to E evidence grades are explained in our editorial policy. See also our medical disclaimer and affiliate disclosure.

1. Singh P, Gollapalli K, Mangiola S, et al. Taurine deficiency as a driver of aging. Science. 2023. PubMed · DOI
2. Fernandez ME, Bernier M, Price NL, et al. Is taurine an aging biomarker?. Science. 2025. PubMed · DOI
3. Marcangeli V, Cefis M, Hammad R, et al. Experimental Evidence Against Taurine Deficiency as a Driver of Aging in Humans. Aging Cell. 2025. PubMed · DOI
4. Cao Q, Nie Z, Liu Y, et al. Effects of taurine supplementation on cognitive function: a systematic review and meta-analysis of randomised controlled trials. Int J Food Sci Nutr. 2025. PubMed · DOI
5. Shao A, Hathcock JN. Risk assessment for the amino acids taurine, L-glutamine and L-arginine. Regul Toxicol Pharmacol. 2008. PubMed · DOI
6. Abud GF, De Carvalho FG, Batitucci G, et al. Taurine as a possible antiaging therapy: A controlled clinical trial on taurine antioxidant activity in women ages 55 to 70. Nutrition. 2022. PubMed · DOI