It has always been the easiest fruit to overlook. Watermelon, long associated with summer and hydration, is now being revisited through a scientific lens and the findings are quietly compelling. Studies Tri Fortify Watermelon (Liposomal Glutathione), 8 oz48 doses Marty Ross MD Supplements Watermelon is a summertime staple. But what's hidden behind the sweetness? American Heart Association Foods With L Glutathione: Avocado, Watermelon, and More GoodRx