Science first.Sources always.
Why this site exists, how we choose the research we show you, and what it can and can't tell you.
Most people have never heard of the antioxidant inside their cartilage.
"Wear and tear" makes cartilage sound like a tyre tread: use it and it goes. The research tells a different story. Cartilage is kept by living cells, and those cells defend themselves with an antioxidant they make from three amino acids: glutathione.
Gluthanol™ is a formulation technology built around supplying it, developed in New Zealand by researchers at Koru Nutrition. This site explains the science behind it and shows the studies so you can judge them yourself.
Four rules for every study we show.
Peer-reviewed and indexed
Every study is a paper indexed on PubMed, linked by its PMID so you can read the abstract yourself.
Titles stay verbatim
We show each paper's own title exactly as published, next to our plain-English summary of what it found.
The model is always labelled
Human trial, human study, human cells, animal, lab or review. Most cartilage glutathione research is cell and animal work, and we say so.
No stretching
A finding about one ingredient in one study is not a claim about any formula. Where something hasn't been tested, we say that too.
See for yourself.
Every one of the 27 studies, with its evidence type and a direct PubMed link.