SupplementsAmino AcidsTaurine

Taurine

listed on the label as L-taurine

It's in energy drinks, it's not a stimulant, and it's the most plentiful free amino acid in your heart.

Get a protocol
A pale taurine capsule
Builds up
Slow in muscle
In your body
About 1 hour
Per 1 capsule
800 mg
30-day supply
$5.40One capsule a day, plus packing and delivery

What is taurine?

Taurine is usually called an amino acid, but it doesn't help build proteins the way others do. Instead it floats free inside your cells, in very high amounts in your heart and muscles, helping manage water, calcium and energy.

You get it from meat and fish, and your body can make some. Vegans get almost none from food. In one study their blood levels ran about a fifth lower, and they lost much less in their urine.

Its name comes from the Latin for bull. Despite that, ours has no animal products: 800 mg of L-taurine in each capsule.

What it does

  • Heart and muscleSupports normal function in heart and muscle cells.
  • Fluid balanceHelps cells maintain healthy water and mineral balance.
  • Fat digestionYour liver attaches it to bile acids, which help you digest fat.
  • Antioxidant supportHelps protect cells from everyday oxidative stress.

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.

The full guide · 15 min readTaurine benefits, side effects and dosage: what the evidence showsWhich form, how much, when to take it, and whether it's worth it, with the studies behind each answer.

What people take it for

How long it takes

Your blood responds within hours, but your muscles don't hurry. After 7 days at 5 g a day, muscle taurine hadn't changed, and the blood pressure study ran 12 weeks.

Taurine in your blood, after a 4 g study amountTypical pattern
Highest at about 1.5 hours
Mostly cleared
08 hours
  1. 1.5 hoursThe highest level in your blood
  2. 7 daysMuscle stores still haven't changed, even at 5 g a day
  3. 12 weeksHow long the main blood pressure study ran

How long it stays in your body

It's highest in your blood about 1.5 hours after you swallow it, and half is gone about an hour after that. Your body clears it quickly.

What's in a capsule

One capsule holds 800 mg. The blood pressure study used 1.6 g a day, and endurance studies used 1 to 6 g, so one capsule is at the low end.

Fast in your blood, stubborn in your muscles

Taurine is a study in two speeds. A single amount can raise blood levels more than 10 times over, and then it's largely gone within hours. Muscle barely notices. A week of daily taurine left muscle levels just where they were. So whatever it's doing for endurance, it may not be through topping up muscle.

The aging story is where taurine got famous. In 2023, researchers reported that taurine fell with age and that giving it extended healthy life in mice and improved health in monkeys. Then in 2025, a study that followed people over time found levels stayed steady or even rose with age. So animal results don't yet carry over to people, and it's too soon to think of this as an anti-aging supplement.

Heart muscle needs it. Cats can't make enough and can develop serious heart trouble without it in their food, which is why cat food has it added. People make their own, so that's a very different story, but it does show why researchers keep coming back to it.

Read the full guide to taurine

What it interacts with

Goes well with

Side effects

  • Usually none. A review of 25 trials found no significant side effects compared with a dummy pill, and the evidence for safety is strong up to 3 g a day.
  • Rarely, allergic reactions such as hives or swelling. Stop and get help if you have trouble breathing.

Check first if

  • Pregnancy or breastfeeding: our label says to check with your physician. Taurine passes into breast milk.
  • Heart, kidney or liver problems: tell your doctor first.
  • Teenagers: high amounts, especially from energy drinks, may not be a good idea for the developing brain.

The blood tests that go with it

Work it out

A slim glass tube of blood in two clean layersHeart · CalculatorCholesterol ratio calculatorTG to HDL, total to HDL, and non-HDL.A taut Achilles tendon pushing off the groundBody and fitness · CalculatorVO2 max calculatorFrom your heart rates, or a 12-minute run.Two fingertips on the pulse at a wristHeart · CalculatorHeart rate zones calculatorYour five zones, Zone 2 included.A clean fork and an empty plate, composed like jewelleryBlood sugar · CalculatorHOMA-IR calculatorInsulin resistance from fasting glucose and insulin.

Supplementation

Or start from a ready-made protocol.

Start from one of these, or add it to your own. Everything comes in one pouch each morning.

See all supplements
  • cGMP-certifiedFacilities
  • FDA-registeredFacilities
  • Accredited labsIndependent testing
  • Non-GMOIngredient options
  • OrganicIngredient options
  • VeganFormula options

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

Want it more precise? Get the app.

A page can only tell you about Taurine. The app tells you about you: whether it fits, when to take it, and whether it's working.

  • Checked against your blood work and everything you already take
  • On your daily timeline, around your sleep, training and meals
  • Followed over time, so you can see what moved
Download the appStart on the web
09:41
74LIFE FORCE›
09:00— 12:0011:05now
TaurineOPEN 09:00
Checked for youTHIS MORNING

Taurine against your blood work, your sleep and what you already take.

LifeFromAI

Your triglycerides and home blood pressure have both eased since spring. Want to see what changed around then?

ASK ABOUT TAURINE
People take it for

Find the goal that's yours.

Your record, your routine and LifeFrom AI, pointed at the outcome that matters to you.

Protect your heartHeartProtect your heartBody performanceBodyBody performanceLive longer, betterLongevityLive longer, better

Questions

What is taurine good for?

Mostly blood pressure, endurance and general heart and metabolic health. The aging story is still unsettled.

How long does taurine take to work?

Your blood responds within about 1.5 hours, and a single amount gave a small lift in endurance studies. Blood pressure studies ran longer, up to 12 weeks.

What are the side effects of taurine?

It's usually well tolerated, and reviews found no significant side effects. Most concerns come from energy drinks, where caffeine is the bigger issue.

Is taurine a stimulant?

No. It's in energy drinks, but the buzz comes from the caffeine. Taurine itself isn't known for that.

Is taurine bad for you?

Not at the amounts studied in healthy adults, with evidence strongest up to 3 g a day. Teenagers and high energy drink use are where concerns come up.

Who should not take taurine?

Talk to your doctor first if you're pregnant or breastfeeding, have heart, kidney or liver problems, or take blood pressure or diabetes medicines.

Can I take taurine every day?

Studies have given it daily for up to a year. Evidence for safety is strongest at up to 3 g a day.

Does taurine slow aging?

We don't know. A 2023 study was exciting in animals, but a 2025 study found taurine doesn't reliably fall with age in people. Human trials are what's needed.

What is the half-life of taurine?

About 1 hour. It peaks about 1.5 hours after you swallow it, and your body clears it fast.

Do vegans need taurine?

Your body makes some, so it isn't essential for most adults. Vegans do run a little lower, and ours contains no animal products.

Sources
  1. Ghandforoush-Sattari M et al. Pharmacokinetics of oral taurine in healthy volunteers. J Amino Acids, 2010.
  2. Galloway SD et al. Seven days of oral taurine supplementation does not increase muscle taurine content. J Appl Physiol, 2008.
  3. Tzang CC et al. Taurine reduces the risk for metabolic syndrome. Nutr Diabetes, 2024.
  4. Sun Q et al. Taurine supplementation lowers blood pressure and improves vascular function in prehypertension. Hypertension, 2016.
  5. Waldron M et al. The effects of an oral taurine dose and supplementation period on endurance exercise performance. Sports Med, 2018.
  6. Singh P et al. Taurine deficiency as a driver of aging. Science, 2023.
  7. Fernandez ME et al. Is taurine an aging biomarker? Science, 2025.
  8. Shao A, Hathcock JN. Risk assessment for the amino acids taurine, L-glutamine and L-arginine. Regul Toxicol Pharmacol, 2008.
  9. Laidlaw SA et al. Plasma and urine taurine levels in vegans. Am J Clin Nutr, 1988.
  10. Schaffer SW et al. Physiological roles of taurine in heart and muscle. J Biomed Sci, 2010.
  11. Ito T et al. Cardiac and skeletal muscle abnormality in taurine transporter-knockout mice. J Biomed Sci, 2010.
  12. Curran CP, Marczinski CA. Taurine, caffeine, and energy drinks: reviewing the risks to the adolescent brain. Birth Defects Res, 2017.

Written by LifeFrom from these sources, and not yet reviewed by a clinician. Talk to your doctor before starting a supplement.

More supplements