Evidence guide
Cranberry and Oral Health: From Lab Research to Real-World Claims
Cranberry compounds have interesting oral-biofilm research, but laboratory results are not product-level proof.
Why cranberry appears in oral-health formulas
Cranberry polyphenols have been studied for interactions with bacteria and adhesion in oral-biofilm models.
What that does not prove
Laboratory inhibition of an adhesion mechanism does not establish that a cranberry-containing supplement prevents plaque, cavities or gum disease in humans.
How to interpret a formula
Look for the extract type, dose and finished-product evidence. If none is provided, treat mechanistic research as background rather than proof.