21st Century Vitamin D 400IU Tablets 100 Count (4 Pack)

What the brand says

21st Century Vitamin D3 400 IU tablets provide a simple, once daily option to help supplement Vitamin D intake as part of a balanced wellness routine. Vitamin D3, also known as cholecalciferol, is naturally produced by the body through sunlight exposure and is found in limited food sources such as fatty fish and egg yolks. This low dose formula is designed for adults seeking an easy to swallow tablet that fits gluten free and non GMO dietary preferences.