Amino Acid ·Moderate evidence ·Reviewed May 2026
Sulfur-containing amino acid abundant in heart, brain, and retina. Supports cardiovascular and neural function.
The bottom line
Evidence rating moderate. Most-documented uses: heart health, exercise performance, neuroprotection. 19 sources indexed (2010–2025), with 13 interaction records on file.
Core mechanism
Acts as an osmolyte regulating cell volume. Modulates calcium signaling, stabilizes cell membranes, and conjugates bile acids. Antioxidant via hypotaurine pathway.13,15
Ranked by evidence and value.
Real-world pricing across three quality tiers. Assumes Taurine Powder / Capsules.
Assumes 1-3 g/day from goal dosage. Vendor basis: BulkSupplements powder, NOW/iHerb, Vitacost, and Amazon marketplace; powder is the clear budget tier. Updated 2026-05-28.
How much you'd eat to match a supplemental dose.
Animal foods are the main sources; amounts vary widely by tissue and cooking.
Dose: 1-3 g daily3
Timing: Split once or twice daily
Often used for blood-pressure or heart-rhythm-supportive stacks.
Timing: Pre-workout or post-workout
Often included in performance formulas but does not need a proprietary blend.
Dose: 1-2 g nightly
Timing: 30-60 minutes before bed
Helpful when restlessness and nighttime tension coexist.
What to test, the optimal window inside the conventional range, and how long a response takes.
Taurine (1 to 6 g per day) raises plasma taurine and supports bile acid conjugation, cardiac function, and osmoregulation.1,2
Plasma reflects recent intake. Urinary taurine is a more stable marker of body stores.
Taurine is expected to modestly lower systolic blood pressure, with effects that are typically small, dose-dependent, and clearest in people who start with hypertension.1,3
Measure after 5 minutes of seated rest with an empty bladder, same arm and time daily, avoiding caffeine and exercise for 30 minutes prior. Average multiple readings and retest under identical conditions.
Taurine may modestly lower fasting triglycerides, and some data point to a small reduction in total cholesterol as well. The proposed mechanisms involve enhanced bile acid synthesis and conjugation (which draws on cholesterol) and possible improvements in lipid metabolism, but the human evidence is preliminary and comes mainly from small trials and animal models, so any effect is likely modest and not guaranteed.1,4
Draw a fasting lipid panel (typically 9 to 12 hours fasting), since triglycerides are highly sensitive to recent meals and alcohol. For a fair comparison, test under similar conditions before starting and again after a sustained trial, ideally at the same time of day and after a few days of stable diet. Timing of the dose relative to testing is not critical for a fasting draw, but keep your routine consistent. Because triglycerides respond strongly to diet, weight, and activity, attribute changes to taurine cautiously. If you have diabetes, metabolic syndrome, liver disease, or take lipid-lowering or other prescription medication, involve your clinician before relying on a supplement to manage triglycerides.
Where this appears in the symptom-to-supplement map, ranked by relevance.
Taurine is an inhibitory neuromodulator that may dampen central excitability, with plausible but unproven relevance to masticatory muscle overactivity.1,2
Evidence for bruxism specifically is lacking; consider only as an adjunct after addressing sleep and stress.
Taurine conjugates with bile acids to form taurine-bound bile salts that may improve bile solubility and fat emulsification.1,2
Supports bile composition rather than acting as a direct digestive aid; evidence in humans is limited.
Taurine has inhibitory, calming effects on the nervous system and may help offset overstimulation from caffeine.19,1
Evidence specific to caffeine jitters is limited; useful as a gentle calming adjunct.
Taurine contributes to cellular osmoregulation and fluid balance, which may theoretically support thermoregulation, though direct human heat-tolerance data are very limited.17,1
Generally well tolerated, but evidence for heat tolerance specifically is preliminary, so treat as supportive only.
Taurine stabilizes cardiac membranes and has been studied in congestive heart failure and arrhythmia.3,1
Generally well tolerated; not a substitute for cardiology evaluation.
Taurine may support muscle relaxation and electrolyte handling.1,2
Often used when cramps cluster around exercise.
Taurine has mild natriuretic effects and may support fluid balance through osmoregulation and effects on the renin-angiotensin system.1,2
Human data on edema are limited and mostly from heart failure research; treat as supportive rather than a primary diuretic.
Taurine helps regulate intracellular calcium and membrane stability in muscle and nerve, which may theoretically reduce excitability, though human twitch data is limited.1,2
Generally well tolerated; evidence for twitching specifically is preliminary.
Has calming neuromodulatory effects that may support nighttime relaxation.
Use when sleep issues overlap with restlessness or palpitations.
Taurine has inhibitory neuromodulatory effects that may support a calmer baseline.1,2
Most helpful when anxiety includes physical tension.
Taurine helps regulate calcium handling and osmotic balance in muscle cells, which has been proposed to influence cramp threshold in athletes.8,18
Preliminary support only; frequent or severe cramps that disrupt training deserve a clinical check for underlying causes.
Taurine modulates calcium flux and membrane stability in muscle, which may temper involuntary contractions.
Human cramp data are thin; reasonable to trial only after electrolytes and reversible causes are addressed with a clinician.
Evidence-based stacks that include it, with the exact dose and timing each one uses.
Taurine is involved in cellular calcium handling and osmoregulation in muscle, and some studies report small benefits to endurance or recovery, though results are inconsistent and it is best treated as an adjunct.17,1
Taurine supports calcium handling and contractile function in muscle and contributes to cellular antioxidant defense, and may modestly aid substrate use during prolonged effort. Endurance evidence is moderate, with meta-analytic support for small improvements in time trial and time to exhaustion performance.1,2
Taurine and magnesium are both calcium channel modulators with cardiovascular and sleep benefits; combined use is common in evening relaxation protocols.
Recommendation: Common evening stack: taurine 1 to 2 g plus magnesium 200 to 400 mg elemental at bedtime.
Beta-alanine and taurine compete for the same transporter, so chronic high-dose beta-alanine can lower tissue taurine levels and vice versa.
Recommendation: Separate beta-alanine and taurine doses by at least 2 hours and avoid taking them in the same serving to limit transporter competition.
Taurine and L-theanine both promote GABAergic and calming neurotransmission, giving additive relaxation without sedation.
Recommendation: Reasonable combination for calm focus or sleep onset. No separation required.
Taurine and creatine are both cell-volumizing osmolytes that support muscle hydration and performance, and are frequently combined in pre-workout formulas for complementary ergogenic effect.
Recommendation: Reasonable performance combination. Maintain adequate hydration when using both.
Both amino acids support endothelial function and exercise performance, and are commonly combined for complementary vascular and ergogenic effects.
Recommendation: Reasonable to take together pre-exercise for blood flow and performance support; effects are complementary rather than competitive and no time separation is needed.
Glycine and taurine are both inhibitory amino acids that together support relaxation and may aid sleep onset, including glycine's documented lowering of core body temperature before bed.
Recommendation: Reasonable to combine for evening calm or sleep support. A common pairing is glycine 3g with taurine 0.5g to 2g taken 30 to 60 minutes before bed.
Taurine helps stabilize cardiomyocyte membranes and supports intracellular potassium handling, complementing potassium intake for cardiac electrical stability.
Recommendation: Generally compatible and complementary. People on potassium-sparing or potassium-altering medications, or with kidney disease, should manage potassium under clinical guidance rather than self-supplementing.
Taurine lowers blood pressure in prehypertensive and hypertensive adults (about 7 mm Hg systolic in randomized trials) and reduces sympathetic nervous system overactivity. Combined with lisinopril the effects are additive and generally well tolerated, though mild hypotension is possible if blood pressure is already at goal.
Recommendation: Taurine 1.5-3 g/day is the dose range used in clinical trials; monitor home blood pressure after starting and tell your prescriber so your lisinopril dose can be reviewed.
Taurine modestly lowers both systolic and diastolic blood pressure (~3 mmHg each in meta-analysis) and has direct heart-rate-lowering effects. Layered on metoprolol, the combination can produce additive bradycardia or hypotension in sensitive patients, though the overall effect is usually mild.
Recommendation: If you take metoprolol, taurine doses up to 1.5-3 g/day are usually well-tolerated, but check your blood pressure and resting heart rate when you start. Hold or reduce the dose if your HR drops below 50 bpm or you develop dizziness.
Taurine lowers blood pressure modestly and has direct heart-rate-lowering effects. Combined with atenolol, the effects can be additive, producing further reductions in heart rate and blood pressure.
Recommendation: Taurine at 1-3 g/day is typically safe with atenolol but check resting heart rate and blood pressure when you start. Reduce the dose if HR drops below 50 bpm or you develop dizziness.
Taurine modestly lowers blood pressure and heart rate and has heart-rate physiology effects. Combined with carvedilol (which blocks alpha1, beta1, and beta2 receptors), the cumulative drop in BP and HR can be larger than with a more selective beta-blocker.
Recommendation: Taurine 1-3 g/day is generally safe with carvedilol but monitor resting heart rate and blood pressure when starting. Reduce or stop if HR drops below 50 bpm or you develop dizziness, especially on standing.
Taurine lowers systolic and diastolic blood pressure by about 3-4 mmHg in meta-analysis and has direct heart-rate-lowering effects. Combined with verapamil's strong rate and AV-node suppression, taurine can push heart rate or blood pressure too low, especially in older adults or those on additional rate-slowing drugs.
Recommendation: If you take verapamil, taurine doses up to 1.5-3 g/day are usually tolerable, but check your blood pressure and resting heart rate when you start. Reduce or stop taurine if your HR drops below 50 bpm or you develop new dizziness or fatigue.
Numbered references. Citations throughout the page link here.
Taurine supplementation significantly reduced fasting blood glucose, HbA1c, fasting insulin, triglycerides, total cholesterol, and blood pressure.
Long-term taurine supplementation significantly improved triglyceride levels and showed favorable effects on fasting blood glucose and HbA1c in overweight or obese adults.
Taurine significantly reduced SBP and DBP in hypertensive patients, increased LVEF in heart failure patients; noteworthy effects in preventing hypertension and enhancing cardiac function.
Taurine supplementation demonstrated statistically significant reductions in systolic BP, diastolic BP, fasting blood glucose, and triglycerides, key metabolic syndrome components.
Meta-analysis found a significant inverse association between taurine levels and colorectal cancer risk, suggesting a potential protective role of taurine.
Samadi M, Haghi-Aminjan H, Sattari M et al.. The role of taurine on chemotherapy-induced cardiotoxicity: A systematic review of non-clinical study. Life sciences. 2021
Chen Q, Li Z, Pinho RA et al.. The Dose Response of Taurine on Aerobic and Strength Exercises: A Systematic Review. Frontiers in physiology. 2021
Taurine ingestion (1-6 g/day) reduced both SBP and DBP, with mean reductions of approximately 3 mmHg.
SBP reduced by 3.8 mmHg, DBP by 3.2 mmHg
Li Y, Wang Q, Liu Y et al.. Taurine ameliorates blood pressure and vascular function in patients with type 2 diabetes: Randomized, double-blind, placebo-controlled trial. iScience. 2025
Althobaiti NA, Alsharif I, Alhasani RH et al.. Taurine and Neuroprotection: A Potential Shield Against Methylglyoxal-Induced Toxicity in SH-SY5Y Cells. Journal of biochemical and molecular toxicology. 2025
Ding L, Yang Z, Liu G et al.. Safety and efficacy of taurine as an add-on treatment for tics in youngsters. European journal of neurology. 2020
Chronic taurine supplementation in aged mice significantly ameliorated age-dependent decline in spatial memory; increased stem cell proliferation and neurogenesis in the dentate gyrus.
Taurine concentrations decline with aging; supplementation increased health span and life span in mice and health span in monkeys; reduced cellular senescence, protected telomerase, suppressed mitochondrial dysfunction.
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