Caffeine in morning coffee makes many individuals pee regularly. Caffeine reduces kidney salt reabsorption like diuretics, according to a 2017 Frontiers study.
Tea is another antioxidant-rich caffeinated drink that many people drink everyday. Tea often has less caffeine than coffee.
Watermelon cools in summer. Antioxidant-rich watermelon diures. The USDA credits its ruby red hue to lycopene antioxidants. Watermelon's high water content may diureze.
The USDA says celery is 95% water and contains magnesium, potassium, and calcium. According to a 2021 International Journal of Preventive Medicine article, Iranians used celery seed as a diuretic.
Coconut water is popular, and it has minerals and polyphenols to improve hydration and wellness.
Parsley is used in many recipes, notably Mediterranean, as a main ingredient or garnish. Animal studies suggest the earthy-tasting plant may diuretic.