Research review priorities
Supplement research priorities
These are research priorities, not recommendations. We selected decisions where public interest, plausible benefit, evidence maturity, and safety stakes make a careful synthesis especially useful.
- priority dossiers
- 148
- claim-level questions
- 444
- study extraction underway
- 148
01 / PRIORITY
How priorities were selected
Priority reflects relevance to healthy aging, frequency of real-world use, maturity of human evidence, the cost of a wrong decision, and the need to separate a valid narrow use from broader marketing claims. It does not rank efficacy or imply that everyone should take the product.
02 / EXTRACTION
What happens next
For every question, we screen the PubMed candidate set, connect multiple publications from the same trial, extract population, dose, comparator, duration, outcomes, harms, and funding, then synthesize supportive, mixed, negative, and safety findings together.
Only screened studies enter audited study and participant totals. Search-result counts and the papers listed here as questions never become evidence by themselves.L-arginine
- Review stage
- Extracting studies
- audited research papers
- 2
Why this is a research priority
Short trials suggest blood-pressure lowering, but durable benefit is unproven and a post-infarction trial stopped after excess deaths.
Questions being reviewed
- Does L-arginine produce durable, clinically meaningful blood-pressure reduction beyond short trials?
- Which exercise or erectile-function outcomes improve independently and at what dose?
- Why is recent myocardial infarction a contraindication, and what hypotension, nitrate, PDE5-drug, kidney, herpes, and surgery limits apply?
L-carnitine
- Review stage
- Extracting studies
- audited research papers
- 2
Why this is a research priority
Post-infarction outcome evidence is negative and a metabolic-syndrome trial found greater stenosis despite unchanged plaque volume.
Questions being reviewed
- Which diagnosed deficiency, dialysis, or drug-related indications benefit under medical supervision?
- Does L-carnitine improve meaningful weight loss, exercise performance, or recovery in replete adults?
- How should stenosis, TMAO, seizure, thyroid, anticoagulant, and gastrointestinal concerns affect use?
Acetyl-L-carnitine
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Depression and neuropathy syntheses show signals, but trials are small and do not establish replacement of psychiatric or neurological care.
Questions being reviewed
- Does acetyl-L-carnitine improve clinician-rated depression in modern, adequately powered trials?
- Which painful-neuropathy or cognition populations show clinically meaningful function, not only symptom-scale changes?
- What bipolar activation, seizure, thyroid, anticoagulant, gastrointestinal, and treatment-supervision limits apply?
Sodium bicarbonate
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Performance effects are event-specific and often small, while gastrointestinal intolerance and the large sodium load are practical safety constraints.
Questions being reviewed
- Which high-intensity events improve, and which continuous or strength outcomes do not?
- Which individualized dose, timing, split-dose, food, capsule, and training-test protocols balance effect and tolerance?
- What gastrointestinal, sodium, hypertension, heart, kidney, medicine, and competition-use limits apply?
Electrolyte mix
- Review stage
- Extracting studies
- audited research papers
- 1
Why this is a research priority
Carbohydrate-electrolyte drinks can aid rehydration after meaningful exercise losses, but formulation and context matter and routine daily use is unsupported.
Questions being reviewed
- When do electrolyte-carbohydrate drinks restore fluid better than water after measured exercise losses?
- Which sodium, carbohydrate, potassium, volume, and post-exercise food context is effective?
- When are water or food sufficient, and what kidney, heart, hypertension, diabetes, hyponatremia, and heat-illness limits apply?
03 / SOURCES
Research standards
The review begins with federal evidence summaries and PubMed records, then moves to trial-level extraction. Product claims or another publisher’s evidence grade are not copied into the ledger.