Taurine
TL;DR
Amino acid-like molecule with massive benefits for heart and longevity
High evidence for lowering blood pressure and protecting the eyes
Moderate evidence for improving exercise performance and metabolic health
Acts as a 'calming' agent in the brain and a stabilizer in the heart
Extremely safe and very cheap
Cost: ~$5-10/month
Best for: Heart health, longevity, anxiety
What it is
Taurine is found in high concentrations in the heart, brain, and eyes. It is not a stimulant (despite being in energy drinks). It helps regulate minerals like calcium and magnesium in your cells. A landmark 2023 study in Science suggested that taurine deficiency is a driver of aging and that supplementation can increase lifespan in mammals.
What the research says
GABA-ergic calming effects. Some evidence for sleep quality. Primarily studied for cardiovascular outcomes; sleep benefits secondary.
Some trials show benefit for blood glucose and lipids. Anti-inflammatory effects may help metabolic markers.
Taurine is the 'heart's favorite amino.' Evidence. Studies show that 3 grams of taurine daily can significantly lower blood pressure and improve the pumping function of the heart in people with congestive heart failure. It also reduces the 'stiffness' of the arteries.
Theoretical rationale via GABA-ergic inhibitory neuromodulation in the auditory system. No published RCTs for tinnitus specifically. Indirect benefits possible through calming effects and sleep improvement.
Taurine on Amazon
*Link is just for your convenience - we do not make any fees
Safety
Excellently safe. It is one of the most abundant molecules in the body. No known toxicity even at high doses.
Interactions
- Lithium: May reduce the excretion of lithium.
Dosing
Standard Dose: 1-3 grams daily. Form: Powder is the cheapest and almost tasteless.
Cost
Dirt cheap. $5-10 per month.
The bottom line
Taurine is perhaps the best 'all-around' longevity supplement you've never heard of. It's safe, cheap, and supports your heart, eyes, and metabolism.
Sources for this page include published meta-analyses, systematic reviews, and NIH dietary supplement fact sheets. All claims reflect the evidence as of early 2026.
This is not medical advice. Consult your healthcare provider before starting any supplement, especially if you take medications.