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Taurine

Selected research topic

Exercise performance

Findings differ across measurements or study conditions. The results below keep them separate.

Findings from a combination study cannot be attributed to this ingredient alone.

Some findings concern patients or people with a deficiency.

Publications for this topic: 6
Human comparison publications: 3
Publications needing review: 3

Findings in the studies

exercise time
- A better result than the comparison group was reported.
  What the comparison group used was not confirmed.
  Patient group · Single ingredient
  Measurement and study conditions
  Study type
  Randomized controlled trial: subjects were randomly assigned to groups for comparison.
  Study population
  Human participants · Patient group
  Ingredients tested
  Single ingredient
  How results were compared
  Results were compared between groups.
  Measurement time
  Not confirmed.
Repeat-sprint cycling performance
- A worse result than the comparison group was reported.
  Several ingredients were tested together, so this ingredient’s individual effect is unknown.
  What the comparison group used was not confirmed.
  Combination study
  Measurement and study conditions
  Study type
  Randomized controlled trial: subjects were randomly assigned to groups for comparison.
  Study population
  Human participants · Participant characteristics were not confirmed.
  Ingredients tested
  Ingredient combination
  How results were compared
  Results were compared between groups.
  Measurement time
  Not confirmed.
time to exhaustion
- A better result than the comparison group was reported.
  What the comparison group used was not confirmed.
  Single ingredient
  Measurement and study conditions
  Study type
  Randomized controlled trial: subjects were randomly assigned to groups for comparison.
  Study population
  Human participants · Participant characteristics were not confirmed.
  Ingredients tested
  Single ingredient
  How results were compared
  Results were compared between groups.
  Measurement time
  Not confirmed.

This result is held for interpretation. That does not mean research found no effect.

Outcome groups needing additional review (3)

peak (W/kg) · Distinct papers needing additional review: 1Evidence criteria check: 1
peak power (W/kg) · Distinct papers needing additional review: 1Evidence criteria check: 1
peak power output · Distinct papers needing additional review: 1Evidence criteria check: 1

One paper can appear under multiple measured outcomes or review reasons, so these counts should not be added together.

Representative outcome and study details

Human studies reported between-group improvement in exercise time.

Single-ingredient studies · Human studies · Includes patient groups · between-group comparison

1 publications linked to this result

Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.

Data coverage and detailed study classifications

Paper counts are separated by research topic below. One paper may contribute to multiple findings.

Analysis status: Public-ready

Ingredient analysis date: 7/5/2026

How the grade was determined: C

The 33.7 evidence score includes 2 independent human studies and 2 clinical studies in the representative benefit area. The C tier remains conservative because of limited repetition across independent human clinical studies, limited repeated evidence for directly felt outcomes.

The grade is based mainly on the research area with the most evidence. It does not mean the same result was found in other areas.

Papers linked to this ingredient overall: 81

Papers linked to this topic 6 · distinct papers 6 · papers with a confirmed human comparison 3 · papers needing additional review 3

A publication may appear in more than one count. These numbers should not be added. Ingredient-wide papers, topic-linked papers, and sources in outcome groups use different scopes. Adding source counts may count the same paper more than once.

exercise time: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
peak (W/kg): Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
peak power (W/kg): Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
peak power output: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
Repeat-sprint cycling performance: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
time to exhaustion: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1

What the research found

Repeat-sprint cycling performance

The study reported worsening in this measurement.

Controlled study in people · Ingredient combination · Unspecified population

Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.

Between-group comparison

Analysis coverage and paper counts

1 paper · 1 measured outcome

Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.

exercise time

The study reported improvement in this measurement.

Controlled study in people · Single ingredient · Patient group

Between-group comparison

Analysis coverage and paper counts

1 paper · 1 measured outcome

Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.

time to exhaustion

The study reported improvement in this measurement.

Controlled study in people · Single ingredient · Unspecified population

Between-group comparison

Analysis coverage and paper counts

1 paper · 1 measured outcome

Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.

peak (W/kg)

The study needs further checking before its result can be interpreted.

Controlled study in people · Ingredient combination · General population

Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.

Between-group comparison

Analysis coverage and paper counts

1 paper · 1 measured outcome

1 papers held from direction counts

Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.

peak power (W/kg)

The study needs further checking before its result can be interpreted.

Controlled study in people · Single ingredient · General population

Between-group comparison

Analysis coverage and paper counts

1 paper · 1 measured outcome

1 papers held from direction counts

Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.

peak power output

The study needs further checking before its result can be interpreted.

Controlled study in people · Separable contribution · General population

Between-group comparison

Analysis coverage and paper counts

1 paper · 1 measured outcome

1 papers held from direction counts

Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.

Unspecified measured outcome

The study needs further checking before its result can be interpreted.

Controlled study in people · Single ingredient · Unspecified population

Between-group comparison

Analysis coverage and paper counts

1 paper · 1 measured outcome

1 papers held from direction counts

Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.

How to read research findings

How should I read research findings?

Research guides

Improvement after a supplement is not the same as a comparative result

Start with the comparison. A before-and-after change alone cannot isolate the contribution of an ingredient.

No clear difference and an uninterpretable result are different

A reported null comparison contains a result. An abstract without an interpretable comparison leaves a question unresolved.

Paper counts and study counts are different

Count original research separately from research that reanalyzes it. Publication volume is neither replication nor a quality rating.

Side effects and combination findings

Findings from this ingredient alone are shown separately from those involving another supplement or medication.

No combination cautions are available to show in the current data. This does not guarantee safety.

Review 1 combination findings and 0 findings that outperformed an ingredient alone.

Reported improvements with combinations

Combination findings are grouped by how the study compared them. This is not a recommendation to combine ingredients.

Combinations with reported improvement

The combination showed improvement, but each ingredient's contribution is unclear.

Iron sulfateOral taurine demonstrated a statistically significant additive positive effect on hemoglobin, RBC count, and serum ferritin when co-administered with iron sulfate compared to iron sulfate alone.