A decoction of olive leaves comprises an aqueous composition containing at least from about 500 mg/liter to about 3,000 mg/liter of oleuropein, from about 100 mg/liter to about 300 mg/liter of hydroxytyrosol, from about 90 mg/liter to about 280 mg/liter of tyrosol, from about 400 mg/liter to about 1,800 mg/liter of elenolic acid.

A composition including a plurality of particles. The plurality of particles include: about 25% to about 99% by weight water soluble carrier; and about 0.01% to 50% by weight antioxidant. The antioxidant is dispersed in a matrix of the water soluble carrier.