Taurine is a conditionally essential amino acid. Your body makes it, and you also get it from meat and fish. It helps maintain heart function, fluid balance, and a calm nervous system.
People take taurine to support cardiovascular health, exercise performance and recovery, and relaxation. You can take it as a capsule or powder, with or without food. Taurine also appears in energy drinks, often alongside caffeine.
Most people tolerate taurine well. High doses can cause mild stomach upset. Talk to a doctor before use if you are pregnant, nursing, or have a medical condition.