Elderberry Sambucus nigra may shorten cold or flu with early use; UK THR rules ensure safe, standardized formats and evidence.

For UK women 35–40: polyphenols matter, but the food matrix and gut microbiome determine bioavailability more than supplements.

A 2023 randomized trial shows full-spectrum clove extract mouthwash reduced ventilator-associated pneumonia in mechanically ventilated ICU patients compared with chlorhexidine.