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.
Riboflavin
Selected research topic
Bone, joint, and mobility
The confirmed comparison studies tested several ingredients together. They cannot isolate the effect of this ingredient.
- Publications for this topic
- 2
- Human comparison publications
- 1
- Publications needing review
- 1
Findings in the studies
BMD
- Results were mixed for this outcome.
Several ingredients were tested together, so this ingredient’s individual effect is unknown.
General population · Combination study · two yearsMeasurement and study conditions
- Study type
- Randomized controlled trial: subjects were randomly assigned to groups for comparison.
- Study population
- Human participants · General population
- Ingredients tested
- Ingredient combination
- How results were compared
- Results were compared between groups. · Study comparison: Combined folic acid, B12, B6, and riboflavin plus shared vitamin D versus active placebo plus shared
- Additional measurement information
- Primary outcome
- Measurement time
- two years
Representative outcome and study details
Human studies reported mixed results for BMD.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · 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.
- Combination, formula, or class studies do not isolate this ingredient or establish synergy.
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:
How the grade was determined: C
The 13.6 evidence score includes 0 independent human studies and 0 clinical studies in the representative benefit area. The C tier remains conservative because of limited repetition across independent human clinical studies, too few clinical findings with an explicit effect direction.
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: 130
Papers linked to this topic 2 · distinct papers 2 · papers with a confirmed human comparison 1 · papers needing additional review 1
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.
- BMD: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
What the research found
BMD
Results for this measurement were mixed; no consistent conclusion can be drawn.
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
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.
Other evidence · Unknown intervention · Unspecified population
The comparison could not be confirmed.
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 guidesNo 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 reviewed caution rules are available yet. Reported caution findings are shown below.
Findings to review with care
Side effects reported for the ingredient alone are separated from findings involving another supplement or medication.
Side effects reported with this ingredient alone
Symptoms or adverse events reported in studies without another active ingredient.
apoptosis1 papers
Riboflavin deficiency is associated with adverse outcomes including growth retardation, increased mortality, liver damage, and apoptosis via mechanisms such as mitochondrial dysfunction, ER stress, ROS, and lipotoxicity.Human studies · Systematic reviewadverse events1 papers
Vitamin B2 400 mg/day resulted in significantly fewer side effects (weight gain, dizziness, GI problems) compared to sodium valproate 500 mg/day in migraine patients (p = 0.005).Human studies · Randomized controlled trial