How these guides are written
Every guide on this site is written to be useful whether or not you buy anything. That is a commercial
decision as much as an ethical one: a supplements store that only publishes flattering information gets
one sale and no return visit.
Where evidence for an ingredient is mixed, we say it is mixed. Where a supplement cannot do something
the category is marketed on, we say so — no product listed here is a treatment for diabetes, high blood pressure, arthritis
or prostate disease. Where the right answer is a clinic rather than a capsule, the guide says that first
and the product second.
The full standard is set out in our editorial policy, and our commercial
relationship with the suppliers is described in the affiliate disclosure.