Last Updated: 23 September 2023

Reviewed by the BioHackers Lab Team | Last updated: September 23, 2023

Taurine balances electrolytes, makes bile for digestion, acts like an antioxidant, and improves endurance; however, this versatile amino acid decreases with age. It is also possibly an anti-aging supplement that shows potential for increasing longevity.

Man feeling energetic with taurine in his energy drink

Key takeaways:

  • Taurine is an amino acid found in foods and energy drinks. It is essential in various bodily functions.
  • Taurine helps maintain electrolyte balance, supports digestion, regulates neurotransmitters, and acts as an antioxidant.
  • Taurine may benefit heart health, nervous system function, antioxidant protection, muscle integrity, and exercise performance.
  • Research suggests taurine might have a role in slowing down the aging process, although more investigation is needed.
  • Taurine-rich foods are mainly from animal sources, but supplements are also available.

While it may not be a household name, taurine is more than just another amino acid. This nutrient is abundant in foods that contain taurine like meat and seafood. It’s also a key ingredient added to popular energy drinks.

But taurine performs a diverse array of essential functions within the human body. And exciting new research indicates taurine may even hold the keys to longevity and healthy aging amongst other health benefits of taurine.

What Is Taurine?

Taurine is an amino acid found in high concentrations in the brain, heart, and muscles. Amino acids are the building blocks of proteins needed for growth, repair, and proper functioning of tissues.

Taurine is considered a “conditionally essential” amino acid. The body naturally produces conditionally essential amino acids. However, in certain situations like illness or stress, the body’s ability to make these amino acids becomes limited, and they need to be obtained from dietary sources or supplements.

Taurine is crucial for many body functions, such as maintaining electrolyte balance, helping with digestion, and brain neurotransmitter balance. It’s also known for its antioxidant effects, supporting the immune system, and aiding sports endurance. While the body usually produces taurine, aging and health issues can limit its production.

The word “taurine” comes from the Latin word “taurus,” which means “bull” or “ox.” This name originated in the 19th century when scientists first discovered the compound in ox bile. However, taurine is now understood to be present in various tissues, not just bile.

What Are the Health Benefits of Taurine?

Researchers have identified the following potential health benefits of taurine:

  • Heart Health: Taurine may improve heart health by supporting healthy blood pressure levels and reducing the risk of cardiovascular diseases.
  • Antioxidant Defense: Taurine is an antioxidant that protects cells from damage by neutralizing free radicals. This reduces oxidative stress linked to chronic disease and aging, which may also promote health and longevity.
  • Exercise Performance: Some early research shows taurine supplements may improve exercise ability and reduce muscle fatigue. But more studies are needed to confirm taurine’s effects on athletic performance.
  • Diabetes Management: While research is limited, a study found that taurine supplements might help control blood sugar in individuals with diabetes.
  • Neurological Development: Taurine may play a role in the formation of neurotransmitters – important messaging molecules. It also seems to protect nerve cells from toxins. Some early research shows taurine may shield the brain in diseases like Alzheimer’s, Parkinson’s, and Huntington’s.
  • Eye Health: Taurine is present in significant amounts in the retina of the eyes. Its antioxidant properties have been associated with maintaining vision health, potentially protecting retinal cells from damage.
  • Liver Protection: Taurine may help protect against liver damage caused by harmful substances.
  • Healthy Aging: A recent study suggests that when taurine levels are maintained or increased, it contributes to longevity and improved health in different animals. Taurine may also help prevent aging-related issues like cell damage and inflammation. Additionally, lower taurine levels were linked to age-related diseases.

While taurine shows promise in various aspects of health, individual responses can vary, and more research is needed to fully understand its mechanisms and potential benefits.

Sources of Taurine

Taurine is naturally found in various animal-based foods. Some common sources of dietary taurine include:

  • Meat: Beef, pork, and poultry are good sources of taurine.
  • Fish and Seafood: Fish, such as tuna and cod, contain taurine. Shellfish like shrimp and clams also provide taurine.
  • Dairy Products: Taurine can be found in small amounts in dairy products like milk and yogurt.

Taurine is less common in plant-based foods, so people following a vegetarian or vegan diet might have lower taurine intake. Some energy drinks and supplements contain synthetic taurine.

It’s important to note that the body can produce taurine from other amino acids, but dietary sources may play a significant role in maintaining optimal taurine levels if needed.


  • A typical American diet can provide around 123 to 178 milligrams (mg) of taurine daily.
  • A lacto-ovo vegetarian diet, which includes dairy and eggs but excludes meat, might provide around 17 mg of taurine per day.
  • An 8-ounce energy drink can boost the average taurine intake by 6 to 16 times, potentially increasing taurine intake for vegetarians by 44 to 117 mg.

Does Taurine Have Any Side Effects?

Taurine is generally considered safe when taken appropriately through dietary sources or supplements.

While a study suggested a safe maximum daily dose of 3,000 mg of taurine, the European Food Safety Authority (EFSA) mentions that an intake of up to 6,000 mg per day is considered safe.

However, like any substance, excessive taurine intake may lead to potential side effects.

Some reported side effects include:

  • Back pain
  • Vomiting
  • Fever
  • Liver pain
  • Headache
  • Stomach pain 
  • Diarrhea
  • Fatigue 

Taurine supplements might interact with certain medications. If you take any medications, talk to your healthcare provider before adding taurine supplements.

Limited research is available on the safety of taurine supplements during pregnancy and breastfeeding. Pregnant or breastfeeding individuals should consult a healthcare professional before using taurine supplements.

It’s important to remember that most people can meet their taurine needs through a balanced diet, and severe side effects from consuming taurine-rich foods are unlikely.

As with any dietary supplement, moderation and informed decision-making are key to your health and well-being.

What About Taurine Supplements? 

Taurine supplements are products that contain concentrated forms of the amino acid. These supplements are available in various forms, such as capsules, tablets, powders, or liquid solutions. They are designed to provide an additional source of taurine beyond what you might obtain from your regular diet.

While taurine supplements are available, most people can get adequate amounts by eating a variety of taurine-rich foods. If you’re considering taking taurine supplements, look for ones that have been certified by independent organizations, like NSF or USP.

Ultimately, consulting with a healthcare professional is recommended to determine whether taurine supplements suit your needs and health status.

Can Taurine Slow Down Aging? 

A 2023 study suggests that taurine could have a role in slowing down aging and extending lifespan. Researchers found that taurine levels decline as we age, and when male and female mice were given taurine supplements, their lifespan increased by around 10 to 12%. These supplemented mice showed better health, including improved memory, bone density, and immune system function.

The effects of taurine were further observed in rhesus monkeys, where a six-month taurine course improved body weight, bone health, blood sugar levels, and immune system. The study’s duration wasn’t long enough to determine if the monkeys had a longer lifespan.

While these findings are promising, the researchers acknowledge that it’s uncertain if the same results would occur in humans.

Additionally, the exact mechanisms through which taurine slows down aging are still unknown. More research is needed to determine its effects on humans and to understand the underlying mechanisms.


Is taurine safe?

Taurine is generally considered safe when obtained from dietary sources or consumed in moderation through supplements, but excessive intake may lead to potential side effects.

Can I take taurine every day?

Many people can safely include dietary sources of taurine in their daily routine. However, it’s advisable to consult a healthcare professional before incorporating taurine supplements into your daily regimen to ensure they align with your health needs.

How does taurine work?

Taurine works in the body as a signaling molecule and regulator that helps stabilize cell membranes, modulate ion movement, form bile acids for fat digestion, regulate neurotransmitters, remove toxins, and act as an antioxidant that neutralizes free radicals.

Is taurine in energy drinks safe?

While taurine itself in energy drinks might not pose issues, the additional components like caffeine, sugar, and herbal extracts could be problematic. The safety of these drinks is uncertain due to the mix of ingredients. Generally, healthy adults can handle energy drinks, but some people may experience dehydration, sleeping problems, nervousness, and tension, often attributed to the caffeine content.

Final Thoughts

While its effects show promise, more research is needed to fully understand taurine’s mechanisms and ascertain its potential benefits. Taurine-rich foods are primarily found in animal sources, making dietary choices important for vegetarians and vegans. When considering taurine supplements, certified products, and healthcare consultation are advised.

The prospect of taurine’s impact on aging is intriguing, though more studies are required for confirmation. When incorporating taurine into your routine, responsible consumption, moderation, and informed decision-making with the help of a healthcare professional are essential.

Maggie Aime RN

Maggie Aime, MSN, RN

Maggie Aime, MSN, RN is a freelance health, wellness, and medical personal finance writer. Her extensive nursing experience includes oncology, kidney transplant, cardiology, and home health. Read more about her work at