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Taurine

Supplement amino acid fitnessheart & metabolic
Aka: L-taurine, 2-aminoethanesulfonic acid
Brands seen in Singapore: California Gold Nutrition, NOW Foods, Life Extension, Micro Ingredients, Nutricost
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Limited human evidence — mostly studied with caffeine
When to take
Trials dose it about 1 h before a single exercise bout
Take with
Water · commonly sold paired with caffeine in energy drinks
Pros & cons
Pros
  • With caffeine, helped anaerobic power and reaction
  • 12 pooled trials rated moderate to strong quality
  • Commonly used doses in trials are 1000–2000 mg
Cons
  • Evidence for taurine on its own is thin
  • Only 12 studies pooled — estimates are imprecise
  • Energy-drink doses of 1 g did not lift performance
Sources
  1. Caffeine and taurine: systematic review and network meta-analysis (Deng et al., JISSN 2025) · read 2026-08-27
    what it says
    “findings regarding their combined efficacy remain inconclusive … Twelve studies were included … the relatively small number of included studies increases the influence of individual study variability, which may compromise the precision”
  2. HSA — Guidelines on prohibited and restricted ingredients in health supplements and traditional medicines (Oct 2025, Annex A/B) · read 2026-08-27
    what it says
    “Annex B: List of substances with potential safety issues and recommended risk mitigation measures”
  3. HSA — Guidelines on health supplements (Tables 4–5, maximum daily dose limits) · read 2026-08-27
    what it says
    “Table 4: Vitamins Limits … Table 5: Minerals Limits”
  4. iHerb Singapore — L-Taurine category (default order) · read 2026-08-27
    what it says
    “California Gold Nutrition … NOW Foods … Life Extension … Micro Ingredients … Nutricost”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.