What did the 2023 Science study find?

The 2023 study found that blood taurine declines with age across mice, monkeys, and humans, and that giving taurine to middle-aged mice extended their lifespan by roughly 10 to 12 percent while improving strength, bone, and metabolic markers. The human part of the study was an association rather than a trial that proved taking taurine lengthens human life.

Taurine is one of the safer supplements available. A formal risk assessment set an observed safe level around 3 grams a day, and studies have used higher doses short-term without serious issues. The most common effect at very high doses is loose stools, which usually settles with a smaller or split dose.

How much taurine should I take?

Most studies use 1 to 3 grams a day, and blood pressure and heart trials have gone up to 6 grams a day under supervision. I usually start patients at 1 to 1.5 grams a day and adjust from there. Splitting the dose reduces the chance of loose stools.

Does taurine lower blood pressure?

Human research supports a modest blood pressure reduction from taurine, on the order of a few points, over several weeks. It is a gentle effect, best thought of as an adjunct to the core work on weight, sodium, activity, and sleep rather than a stand-alone treatment.

Is the taurine in energy drinks doing anything?

The lift you feel from an energy drink comes from caffeine and sugar, not taurine. Taurine is added for marketing and its mild cellular benefits, but it is not a stimulant. Getting taurine from a sugary, caffeinated drink works against most cardiometabolic goals.

Should vegetarians and vegans take taurine?

It is reasonable to consider. Taurine comes mostly from meat, fish, and shellfish, so plant-based eaters take in very little and rely more on what the body makes. A modest daily dose closes that dietary gap, though there is no evidence that plant-based eaters are harmed by their lower intake.

How does taurine compare to creatine for muscle and energy?

They work differently. Creatine recharges the short-term energy currency in muscle and brain and has strong human data for strength. Taurine acts as a cellular helper that supports membrane stability and calcium handling, with a more modest and mixed exercise record. Creatine is the better-proven performance tool; taurine is a gentler, broader support molecule.

Can taurine help the heart?

There is human evidence that taurine improves exercise capacity in patients with heart failure and modestly lowers blood pressure. These are supportive effects rather than treatments, and anyone with heart disease should fold taurine into a plan coordinated with their cardiologist rather than adding it on their own.

Does taurine interact with medications?

Taurine has few documented drug interactions. The one to think through is blood pressure and heart medication, since taurine can nudge blood pressure down and you want the combined effect to be intended. If you take those medications, review any new supplement with your prescriber.

Where does taurine fit in a longevity plan?

I place it in the optional, low-cost tier alongside compounds like urolithin A, NAD precursors, spermidine, and the more experimental fisetin: mechanistically interesting, early in the human evidence, and only worth adding once the proven foundations are handled. Taurine's advantage over most of that group is that it is cheap and very safe, so the downside of a fair trial is small.

Will taurine affect my sleep or anxiety?

Some people find taurine mildly calming, since it interacts with the same signaling systems as several relaxation pathways in the brain. The human data here is thin, so I do not present it as a sleep or anxiety treatment. If you notice a calming effect, taking your dose in the evening is fine.

What did the 2023 Science study find?

The 2023 study found that blood taurine declines with age across mice, monkeys, and humans, and that giving taurine to middle-aged mice extended their lifespan by roughly 10 to 12 percent while improving strength, bone, and metabolic markers. The human part of the study was an association rather than a trial that proved taking taurine lengthens human life.

Taurine is one of the safer supplements available. A formal risk assessment set an observed safe level around 3 grams a day, and studies have used higher doses short-term without serious issues. The most common effect at very high doses is loose stools, which usually settles with a smaller or split dose.

How much taurine should I take?

Most studies use 1 to 3 grams a day, and blood pressure and heart trials have gone up to 6 grams a day under supervision. I usually start patients at 1 to 1.5 grams a day and adjust from there. Splitting the dose reduces the chance of loose stools.

Does taurine lower blood pressure?

Human research supports a modest blood pressure reduction from taurine, on the order of a few points, over several weeks. It is a gentle effect, best thought of as an adjunct to the core work on weight, sodium, activity, and sleep rather than a stand-alone treatment.

Is the taurine in energy drinks doing anything?

The lift you feel from an energy drink comes from caffeine and sugar, not taurine. Taurine is added for marketing and its mild cellular benefits, but it is not a stimulant. Getting taurine from a sugary, caffeinated drink works against most cardiometabolic goals.

Should vegetarians and vegans take taurine?

It is reasonable to consider. Taurine comes mostly from meat, fish, and shellfish, so plant-based eaters take in very little and rely more on what the body makes. A modest daily dose closes that dietary gap, though there is no evidence that plant-based eaters are harmed by their lower intake.

How does taurine compare to creatine for muscle and energy?

They work differently. Creatine recharges the short-term energy currency in muscle and brain and has strong human data for strength. Taurine acts as a cellular helper that supports membrane stability and calcium handling, with a more modest and mixed exercise record. Creatine is the better-proven performance tool; taurine is a gentler, broader support molecule.

Can taurine help the heart?

There is human evidence that taurine improves exercise capacity in patients with heart failure and modestly lowers blood pressure. These are supportive effects rather than treatments, and anyone with heart disease should fold taurine into a plan coordinated with their cardiologist rather than adding it on their own.

Does taurine interact with medications?

Taurine has few documented drug interactions. The one to think through is blood pressure and heart medication, since taurine can nudge blood pressure down and you want the combined effect to be intended. If you take those medications, review any new supplement with your prescriber.

Where does taurine fit in a longevity plan?

I place it in the optional, low-cost tier alongside compounds like urolithin A, NAD precursors, spermidine, and the more experimental fisetin: mechanistically interesting, early in the human evidence, and only worth adding once the proven foundations are handled. Taurine's advantage over most of that group is that it is cheap and very safe, so the downside of a fair trial is small.

Will taurine affect my sleep or anxiety?

Some people find taurine mildly calming, since it interacts with the same signaling systems as several relaxation pathways in the brain. The human data here is thin, so I do not present it as a sleep or anxiety treatment. If you notice a calming effect, taking your dose in the evening is fine.

Taurine Clinical Guide: The Aging Research, Blood Pressure, and Who It Fits

TL;DR30-second take

Taurine is a sulfur-containing amino acid concentrated in your heart, muscles, brain, and eyes. A 2023 Science study found that blood taurine falls with age and that supplementing it extended lifespan in mice and improved healthspan markers in monkeys, though a 2025 follow-up questioned whether taurine reliably falls with age in people, and no human trial shows it slows aging. Human data does support modest blood pressure lowering and some heart benefits. It is cheap, very safe at 1 to 3 grams a day, and a reasonable low-cost experiment once the foundations are covered.

At Fishtown Medicine, taurine started coming up in visits after a 2023 study in the journal Science put it on the longevity map. My read is that the animal findings are striking and the human aging evidence is missing, while the everyday case for taurine rests on cheaper ground: it is inexpensive, very safe, and modestly helpful for a few things we can measure. That combination makes it a reasonable option to consider, as long as we are clear about what it can and cannot do.

Curious where taurine fits for you?

What taurine is and what it does

Taurine is a sulfur-containing amino acid, though it is a bit of an outsider in the amino acid family because your body does not use it to build proteins. Instead it works as a helper molecule, and it collects in the tissues that do the most metabolic work: the heart, skeletal muscle, brain, retina, and white blood cells. You get most of your taurine from meat, fish, and shellfish, and your body makes a smaller amount from other amino acids.

Its jobs are wide-ranging. Taurine helps cells manage their water and mineral balance, stabilizes cell membranes, supports the calcium signaling that lets heart and muscle cells contract properly, helps form the bile salts that digest fat, and buffers oxidative and inflammatory stress. The 2023 finding that caught everyone's attention was that blood taurine levels drop steadily with age across mice, monkeys, and people, which raised the question of whether restoring it could support healthier aging. A 2025 follow-up in the same journal complicated that picture, finding that taurine often stayed flat or rose with age in people, so the age-related decline itself is now debated.

Who this is for (and who it isnt)

Taurine tends to fit well for:

People following the aging research. Anyone curious about the compounds with a believable mechanism and animal data behind them, who wants a clear-eyed read on the human picture.
Lower animal-protein eaters. Vegans and vegetarians take in little dietary taurine, so their intake sits at the low end.
People working on blood pressure. Those looking at gentle, evidence-backed adjuncts alongside the core work on blood pressure.
Active adults and athletes. People exploring recovery and endurance support, where taurine has a modest and mixed track record.

It needs a conversation first, or isnt the right move, if:

You are pregnant or breastfeeding. Taurine matters in early development and is added to infant formula, but supplement-level data in pregnancy is limited, so check with your obstetrician.
You want proven anti-aging. The lifespan data is in mice, not people. If your goal is a proven longevity lever, your time and money go further on sleep, strength, and cardiometabolic risk.
You are chasing an energy-drink buzz. The lift people feel from energy drinks comes from caffeine and sugar. Taurine is not a stimulant.

How we evaluate it: safety, then effectiveness, then cost

Every supplement we recommend runs the same three gates, in order (see how we choose supplements).

Safety first. Taurine has one of the cleaner safety profiles in the supplement world. A formal risk assessment set an observed safe level around 3 grams a day, and human trials have used higher doses short-term without serious problems. We still want a third-party-tested product, because the FDA does not pre-approve supplements.
Effectiveness second. This is the part to weigh carefully. The dramatic lifespan results are from animals. In people, the better-supported effects are a modest lowering of blood pressure and some improvement in exercise capacity for patients with heart failure. There is no human trial showing taurine slows aging, so I present it as promising rather than proven.
Cost last. Taurine is one of the least expensive supplements available, often pennies a day. Low cost and high safety are what make a short, measured trial reasonable even while the aging evidence is still early.

How to dose it, and when

Standard dose: 1 to 3 grams a day for most adults, taken once daily or split into two doses. Many blood pressure and heart trials used 1.5 to 6 grams a day, so there is room to adjust with guidance.
With or without food. Taurine is water-soluble and absorbs well either way. Powder dissolves easily in water and is nearly tasteless, which makes the higher doses easy to take.
Give it a couple of months. Blood pressure changes in the trials took several weeks to appear. Plan on 8 to 12 weeks before judging whether it earns a place in your routine.

Flaws, side effects, and interactions

Taurine is well tolerated, with a few caveats to keep in mind:

Fishtown Medicine

A 90-minute conversation with Dr. Ash. A written plan you can actually follow.

Start your intake

Loose stools at high doses. Very large single doses can loosen the stool. Splitting the dose or lowering it usually settles this.
Encouraging in animals, unproven in people. The lifespan and healthspan data live in mice and monkeys. Human aging trials have not been done, so the biggest longevity claims are still unsupported in people.
Energy-drink confusion. Taurine is added to many energy drinks, which has given it a stimulant reputation it does not deserve. The effects those drinks produce come from caffeine and sugar.
Few known interactions. Taurine has minimal documented drug interactions, but if you take blood pressure or heart medications, adding a compound that also lowers blood pressure is worth reviewing with your prescriber so the combined effect is intended.

We look for: plain taurine powder or capsules with a third-party testing seal (NSF or Informed Sport). Taurine is simple and cheap, so there is no reason to pay for proprietary blends.
Worth considering alongside taurine: the cardiometabolic basics carry the load. Magnesium glycinate supports blood pressure and sleep, omega-3s support the heart and vessels, and CoQ10 supports cellular energy in the same tissues taurine concentrates in.
We skip: energy drinks as a taurine source. The sugar and caffeine work against the cardiometabolic goals most people are after, and the taurine dose in them is beside the point.

Guidance from the Clinic

"When a patient asks me about taurine after seeing the aging headlines, my answer is that the mouse data is striking and the human aging data does not exist yet. What sells me on giving it a fair trial is not the longevity promise. It is that taurine is cheap, safe, and has human data for blood pressure. That is a reasonable bet to make while the bigger questions get answered."

Dr. Ash

Actionable Steps

Run taurine as a low-cost, measured trial.

Handle the foundations first. Sleep, strength, cardio, and cardiometabolic risk do far more than any single amino acid.
Start simple. Choose a third-party-tested plain taurine and start at 1 to 1.5 grams a day.
Pick a number to watch. If blood pressure is your target, track it at home on a consistent schedule. If recovery is the goal, use a 1-to-10 score.
Give it 8 to 12 weeks. The blood pressure effects in the trials took several weeks to show up.
Keep or cut based on the data. If your tracked number has not moved, the small cost is easy to redirect.

Tell Dr. Ash what's going on

Key Takeaways

Taurine is a sulfur amino acid concentrated in the heart, muscle, brain, and eyes; a 2023 study linked lower blood levels to aging, though a 2025 follow-up questioned whether levels reliably fall in people.
The 2023 Science study extended lifespan in mice and improved healthspan markers in monkeys, but no human trial shows taurine slows aging.
Human evidence does support a modest blood pressure reduction and some heart-failure exercise benefit.
It is very safe at 1 to 3 grams a day, with loose stools at high doses being the main side effect.
Its best argument is being cheap and safe, which makes a short, measured trial reasonable once the proven foundations are in place.

A note on cost: any discount we negotiate on professional-grade supplements passes straight through to you, with no markup. Here is how we choose and source supplements.

Scientific References

Singh P, Gollapalli K, Mangiola S, et al. Taurine deficiency as a driver of aging. Science. 2023.
Waldron M, Patterson SD, Tallent J, Jeffries O. The effects of oral taurine on resting blood pressure in humans: a meta-analysis. Curr Hypertens Rep. 2018.
Beyranvand MR, Khalafi MK, Roshan VD, et al. Effect of taurine supplementation on exercise capacity of patients with heart failure. J Cardiol. 2011.
Shao A, Hathcock JN. Risk assessment for the amino acids taurine, L-glutamine and L-arginine. Regul Toxicol Pharmacol. 2008.
Kurtz JA, VanDusseldorp TA, Doyle JA, Otis JS. Taurine in sports and exercise. J Int Soc Sports Nutr. 2021.
Fernandez ME, de Cabo R, et al. Is taurine an aging biomarker? Science. 2025.

Fishtown Medicine | Articles

2418 E York St, Philadelphia, PA 19125(267) 360-7927 hello@fishtownmedicine.comHSA/FSA Eligible

Frequently Asked Questions

Common Questions

In mice, taurine supplementation extended lifespan and improved healthspan markers, and in monkeys it improved several markers of health. In people, a 2023 study reported that blood taurine falls with age, but a 2025 follow-up found that levels often hold steady or rise, and no human trial has shown that taking it slows aging. So the fair answer is that it is promising in animals and unproven in humans.

Deep-Dive Questions

Ready when you are

Start your intake

Dr. Ash reads every intake himself, and answers questions personally - usually within a few hours.

TL;DR30-second take

Curious where taurine fits for you?

What taurine is and what it does

Who this is for (and who it isnt)

Taurine tends to fit well for:

People following the aging research. Anyone curious about the compounds with a believable mechanism and animal data behind them, who wants a clear-eyed read on the human picture.
Lower animal-protein eaters. Vegans and vegetarians take in little dietary taurine, so their intake sits at the low end.
People working on blood pressure. Those looking at gentle, evidence-backed adjuncts alongside the core work on blood pressure.
Active adults and athletes. People exploring recovery and endurance support, where taurine has a modest and mixed track record.

It needs a conversation first, or isnt the right move, if:

You are pregnant or breastfeeding. Taurine matters in early development and is added to infant formula, but supplement-level data in pregnancy is limited, so check with your obstetrician.
You want proven anti-aging. The lifespan data is in mice, not people. If your goal is a proven longevity lever, your time and money go further on sleep, strength, and cardiometabolic risk.
You are chasing an energy-drink buzz. The lift people feel from energy drinks comes from caffeine and sugar. Taurine is not a stimulant.

How we evaluate it: safety, then effectiveness, then cost

Every supplement we recommend runs the same three gates, in order (see how we choose supplements).

Safety first. Taurine has one of the cleaner safety profiles in the supplement world. A formal risk assessment set an observed safe level around 3 grams a day, and human trials have used higher doses short-term without serious problems. We still want a third-party-tested product, because the FDA does not pre-approve supplements.
Effectiveness second. This is the part to weigh carefully. The dramatic lifespan results are from animals. In people, the better-supported effects are a modest lowering of blood pressure and some improvement in exercise capacity for patients with heart failure. There is no human trial showing taurine slows aging, so I present it as promising rather than proven.
Cost last. Taurine is one of the least expensive supplements available, often pennies a day. Low cost and high safety are what make a short, measured trial reasonable even while the aging evidence is still early.

How to dose it, and when

Standard dose: 1 to 3 grams a day for most adults, taken once daily or split into two doses. Many blood pressure and heart trials used 1.5 to 6 grams a day, so there is room to adjust with guidance.
With or without food. Taurine is water-soluble and absorbs well either way. Powder dissolves easily in water and is nearly tasteless, which makes the higher doses easy to take.
Give it a couple of months. Blood pressure changes in the trials took several weeks to appear. Plan on 8 to 12 weeks before judging whether it earns a place in your routine.

Flaws, side effects, and interactions

Taurine is well tolerated, with a few caveats to keep in mind:

Fishtown Medicine

A 90-minute conversation with Dr. Ash. A written plan you can actually follow.

Start your intake

Loose stools at high doses. Very large single doses can loosen the stool. Splitting the dose or lowering it usually settles this.
Encouraging in animals, unproven in people. The lifespan and healthspan data live in mice and monkeys. Human aging trials have not been done, so the biggest longevity claims are still unsupported in people.
Energy-drink confusion. Taurine is added to many energy drinks, which has given it a stimulant reputation it does not deserve. The effects those drinks produce come from caffeine and sugar.
Few known interactions. Taurine has minimal documented drug interactions, but if you take blood pressure or heart medications, adding a compound that also lowers blood pressure is worth reviewing with your prescriber so the combined effect is intended.

We look for: plain taurine powder or capsules with a third-party testing seal (NSF or Informed Sport). Taurine is simple and cheap, so there is no reason to pay for proprietary blends.
Worth considering alongside taurine: the cardiometabolic basics carry the load. Magnesium glycinate supports blood pressure and sleep, omega-3s support the heart and vessels, and CoQ10 supports cellular energy in the same tissues taurine concentrates in.
We skip: energy drinks as a taurine source. The sugar and caffeine work against the cardiometabolic goals most people are after, and the taurine dose in them is beside the point.

Guidance from the Clinic

"When a patient asks me about taurine after seeing the aging headlines, my answer is that the mouse data is striking and the human aging data does not exist yet. What sells me on giving it a fair trial is not the longevity promise. It is that taurine is cheap, safe, and has human data for blood pressure. That is a reasonable bet to make while the bigger questions get answered."

Dr. Ash

Actionable Steps

Run taurine as a low-cost, measured trial.

Handle the foundations first. Sleep, strength, cardio, and cardiometabolic risk do far more than any single amino acid.
Start simple. Choose a third-party-tested plain taurine and start at 1 to 1.5 grams a day.
Pick a number to watch. If blood pressure is your target, track it at home on a consistent schedule. If recovery is the goal, use a 1-to-10 score.
Give it 8 to 12 weeks. The blood pressure effects in the trials took several weeks to show up.
Keep or cut based on the data. If your tracked number has not moved, the small cost is easy to redirect.

Tell Dr. Ash what's going on

Key Takeaways

Taurine is a sulfur amino acid concentrated in the heart, muscle, brain, and eyes; a 2023 study linked lower blood levels to aging, though a 2025 follow-up questioned whether levels reliably fall in people.
The 2023 Science study extended lifespan in mice and improved healthspan markers in monkeys, but no human trial shows taurine slows aging.
Human evidence does support a modest blood pressure reduction and some heart-failure exercise benefit.
It is very safe at 1 to 3 grams a day, with loose stools at high doses being the main side effect.
Its best argument is being cheap and safe, which makes a short, measured trial reasonable once the proven foundations are in place.

A note on cost: any discount we negotiate on professional-grade supplements passes straight through to you, with no markup. Here is how we choose and source supplements.