Taurine
Taurine
Taurine is a conditionally essential sulfonic amino acid found abundantly in the brain, heart, skeletal muscle, and retina. It is widely used as a sports performance supplement, cardiovascular support agent, and neuroprotective compound, with strong evidence for reducing exercise-induced oxidative stress and improving cardiac function.
Mechanism of Action
Taurine modulates intracellular calcium handling, stabilizes cell membranes, and acts as an osmoregulator in excitable tissues. It functions as an endogenous agonist at glycine and GABA-A receptors, providing inhibitory neuromodulation, and activates bile salt formation to support hepatic lipid metabolism. It also reduces mitochondrial reactive oxygen species through direct antioxidant activity and upregulation of antioxidant enzyme expression.
Evidence by Health Goal(18 goals)
Dosing Protocols
With or without food; pre-workout dose 30-60 minutes before exercise if used for performance
Doses up to 6000mg/day have been used in cardiovascular and metabolic studies with good tolerability. Long-term daily use at 1-3g is well-supported by evidence. Split dosing (morning and evening) may optimize tissue saturation.
Safety & Side Effects
Taurine has an excellent safety profile and is generally recognized as safe (GRAS) by regulatory agencies; doses up to 6000mg/day in humans have shown no significant adverse effects in clinical trials. It is not a controlled substance in any major jurisdiction, though individuals with renal impairment should use caution as taurine is renally excreted.
Possible Side Effects
- !Gastrointestinal discomfort (nausea, loose stools) at doses above 4000mg
- !Mild hypotension in individuals with borderline low blood pressure
- !Headache, typically transient and at higher doses
- !Dizziness when combined with antihypertensive medications
- !Potential disruption of sleep if taken in high doses late at night due to CNS modulation
Interactions
- -May enhance blood pressure-lowering effects of antihypertensive drugs (e.g., ACE inhibitors, beta-blockers) — monitor blood pressure
- -Additive CNS depressant effects possible when combined with benzodiazepines or alcohol due to GABAergic activity
- -May potentiate the effects of lithium by altering renal excretion — use caution in patients on lithium therapy
- -Concurrent use with loop diuretics (e.g., furosemide) may deplete taurine levels further, potentially requiring higher supplementation
- -May improve insulin sensitivity — monitor blood glucose in diabetics using insulin or sulfonylureas
Cost & Where to Buy
Taurine is widely available as a bulk powder or capsule supplement. Bulk powder is significantly cheaper per gram; branded formulations or combination products increase cost. Monthly cost based on 2000mg/day dosing.
Search on Amazon