How we use sources
Our evidence hierarchy prioritizes an authentic current product label, current checkout information, official support terms, U.S. government health agencies and peer-reviewed research. We deliberately avoid treating affiliate articles as evidence of clinical efficacy.
Product-source note: This site does not publish direct seller links. Product-specific price, shipping and return statements are labeled as seller-reported and are periodically rechecked against current sales and support materials.
U.S. regulatory and consumer sources
- FDA — Information for Consumers on Using Dietary Supplements
- FDA 101: Dietary Supplements
- FDA — Dietary Supplements: Questions and Answers
Ingredient safety sources
- NCCIH — Green Tea: Usefulness and Safety
- NCCIH — Cinnamon: Usefulness and Safety
- NCCIH — Licorice Root: Usefulness and Safety
Selected peer-reviewed ingredient research
- Bell et al. — Grape seed polyphenol extract and cognitive function
- Standardized grape extract and cognition in older adults
- Bilberry extract pilot cognitive/mood study
- Olive leaf extract and vascular markers randomized trial
Evidence interpretation rules
- A positive ingredient study is not presented as proof that Neuro Serge works.
- Animal and cell studies are not described as human clinical evidence.
- Vendor claims are labeled as vendor-reported when they cannot be independently verified.
- Conflicting evidence is summarized rather than hidden.
- We do not create fake star ratings, review counts or AggregateRating schema.