Renal Essentials Feline Bite-Sized Chews help maintain proper kidney function by supporting renal circulation, normal fluid retention, normal detoxification, stress management, homocysteine balance, and kidney and liver function. The inclusion of astragalus root powder supports kidney circulation and immune function, while the Chinese herb rehmannia supports kidney and liver function, and is known as the "kidney’s own food." Other ingredients like vitamins B1 and B2 support metabolic activity, including the metabolism of proteins, fats, and carbohydrates, supporting proper energy production. Folic acid, DMG, B12 and B6 help support methylation and sulfuration pathways, while minerals like potassium are important for water balance. B vitamins are water soluble and not properly recycled during times of kidney stress or dysfunction; therefore, supplementation may be required.