About
We read the studies so you do not have to trust the label
Supplement Health Expert is an independent editorial site. We publish reviews of supplements, explainers on individual ingredients and vitamins, and practical buying guides. Our readers want a straight answer to a simple question: is this worth taking, and is this bottle worth the money?
Principles
- Independent
- No brand can pay for a review, a rating or placement. Products are selected because readers ask about them or because they are widely sold.
- Evidence-first
- Human trials and systematic reviews come first. Animal and test-tube data are named as exactly that. Government fact sheets set intake limits.
- Plain-spoken
- If a supplement is unlikely to help, we say so. If a cheaper single-ingredient product does the same job, we point to it.
How a review is made
- 01
Pull the full label
We start with the Supplement Facts panel, not the sales page. Every ingredient, form and amount is recorded, including fillers.
- 02
Match each dose to the literature
For every active ingredient we find the dose range used in human trials and note whether the product meets it, misses it or hides it in a blend.
- 03
Screen for safety
We check interactions with common prescription drugs, limits for pregnancy and breastfeeding, and organ-specific cautions.
- 04
Price it per effective dose
The sticker price is meaningless on its own. We work out what one day at a useful dose actually costs and compare it with plain alternatives.
- 05
Write the verdict, show the sources
The conclusion comes last, after the evidence. Sources are linked so you can check our reading of them.
- 06
Revisit when the evidence changes
Articles carry an updated date. When a meaningful new trial appears or a formula changes, the article is reworked.
Evidence grades
The grade rates the human research behind an article's main claim, at the dose actually sold. Buying guides carry no grade.
| Grade | Label | Criteria |
|---|---|---|
| A | Strong | Multiple randomised controlled trials or a meta-analysis in humans, consistent direction, effect at the dose sold. |
| B | Moderate | At least one good randomised trial or several smaller ones; some inconsistency, short duration or population limits. |
| C | Limited | Small or low-quality human studies, or an effect shown only at doses products rarely contain. |
| D | Weak | Animal, cell or observational data only, or human trials that failed to show an effect. |
Money, limits and corrections
How we make money
Some links on this site are affiliate links. If you buy through one, we may earn a commission at no extra cost to you. That commission is the same whether we rate a product highly or tell you to skip it, and we link to products we have rated poorly when readers need to find them.
We do not accept free products in exchange for coverage, we do not run sponsored reviews and we do not sell our own supplements. Where we have any relationship with a company mentioned in an article, it is disclosed in that article. Our full policy is in the disclaimer.
What we are not
We are not your doctor. Nothing on this site is a diagnosis, a treatment plan or a reason to stop a prescribed medication. Supplements interact with drugs, with pregnancy and with existing conditions in ways a general article cannot anticipate. Talk to a clinician or pharmacist who knows your history before starting anything new.
Corrections
If you spot an error, a broken source link or a study we have misread, write to [email protected]. Corrections are made in the article with an updated date, and material changes are noted at the end of the piece.