Taurine is found in meat, seafood, energy drinks, breast milk, and infant formula. It’s an amino acid your body uses for heart function, muscle contraction, and eye health. While your liver and kidneys can produce small amounts from other amino acids, most people get the bulk of their taurine from food. The richest sources by far are shellfish, followed by dark poultry meat and beef.
Seafood Has the Highest Concentrations
Shellfish contain dramatically more taurine than any other food category. Raw scallops pack roughly 828 mg per 100 grams, and mussels come in around 655 mg per 100 grams. To put that in perspective, a modest serving of scallops delivers more taurine than most people consume in an entire day from all other food sources combined. Other shellfish like clams, oysters, and shrimp are also concentrated sources, though specific values vary by species.
Among fish, taurine levels are more moderate but still meaningful. Exact concentrations depend on the species and preparation method, but fin fish generally falls somewhere between poultry and shellfish.
Meat and Poultry
Dark chicken meat is a surprisingly strong source, with broiled dark meat containing about 199 mg of taurine per 100 grams. Raw dark chicken meat ranges from 83 to 170 mg per 100 grams depending on the cut. Light chicken meat, by contrast, contains only about 15 to 18 mg per 100 grams. If you’re choosing chicken for its taurine content, thighs and drumsticks outperform breast meat by a factor of ten.
Beef is more modest, averaging around 40 to 46 mg per 100 grams raw and about 38 mg broiled. Cooking appears to reduce taurine slightly in beef, though the difference is small. Pork and lamb also contain taurine in similar ranges.
Energy Drinks
Taurine became a household name largely because of energy drinks. Red Bull, Monster, and Rockstar all list taurine as an ingredient. A standard 8.4 oz (250 mL) can of Red Bull contains about 1,000 mg of taurine. Most competing brands use a similar amount per serving, typically ranging from 750 to 1,000 mg. Despite the association with “energy,” taurine itself isn’t a stimulant. The alertness people feel from energy drinks comes primarily from the caffeine and sugar, not the taurine.
Breast Milk and Infant Formula
Human breast milk contains a substantial amount of taurine, roughly 450 to 500 mg per liter. This matters because newborns can’t produce much taurine on their own, and it plays a role in brain and eye development during infancy. Commercial infant formulas are now fortified to match these levels, with European formulas averaging about 40 mg per 100 mL of reconstituted formula, a concentration similar to what’s found in breast milk.
Options for Plant-Based Diets
Taurine is almost exclusively found in animal products, which means vegans and strict vegetarians get very little from food. The one notable exception is seaweed. Nori, the thin sheets used to wrap sushi, contains up to 1,300 mg of taurine per 100 grams. Since a single nori sheet weighs only a few grams, the practical amount you’d get from a serving is closer to 40 mg. Still, incorporating nori regularly can help fill the gap.
Your body can also synthesize taurine internally from cysteine, a sulfur-containing amino acid found in beans, nuts, seeds, and whole grains. The liver is the primary site of this conversion. Production has also been documented in the kidneys, fat tissue, the pineal gland, and the retina. However, the amount your body makes on its own is limited, and people on entirely plant-based diets consistently show lower circulating taurine levels than omnivores. Vegan taurine supplements, produced synthetically rather than from animal sources, are widely available.
What Taurine Does in Your Body
Taurine is one of the most abundant amino acids in your body, concentrated in your heart, skeletal muscles, brain, and eyes. In the heart, it helps regulate calcium flow in and out of cells, which is essential for normal contraction. When taurine levels drop severely, it can lead to a form of heart muscle disease called cardiomyopathy. Taurine also stabilizes cell membranes by interacting directly with the fats that form their structure.
In skeletal muscle, taurine supports contraction through a similar calcium-related mechanism, helping muscles store and release calcium efficiently. In the retina, it influences how proteins are activated and deactivated, though its precise role in vision is still being studied. These functions explain why taurine is so important during infancy and why it’s added to formula when breastfeeding isn’t an option.
How Much Is Safe
The European Food Safety Authority reviewed a large body of human studies and identified 6,000 mg per day as a safe level for adults, taken for up to one year. This is based on the absence of adverse effects across studies in adults, children, and infants at doses between 3,000 and 6,000 mg daily. A typical mixed diet provides somewhere between 40 and 400 mg of taurine per day, so even people who eat a lot of shellfish and drink the occasional energy drink stay well below that ceiling.
A 2023 study in animals generated headlines suggesting taurine might slow aging, but follow-up analysis by NIH researchers painted a more complicated picture. When they measured taurine levels in humans, monkeys, and mice over time, circulating taurine often increased or stayed constant with age rather than declining. The relationship between taurine levels and markers like muscle strength or body weight was inconsistent across species, age groups, and study populations. Low motor function, for example, was sometimes associated with high taurine, sometimes with low taurine, and sometimes with neither. The takeaway: taurine is important for normal physiology, but treating it as an anti-aging supplement goes beyond what the current evidence supports.