Nail supplement is an advanced micro nutrient packed supplement that nourishes the nail bed strengthening the structure of the nail minimising breakages it is perfect for split nails course nails weak nails brittle nails slow growing nails each serving contains calcium citrate 21mg 002 rda iron bisglycinate 14mg 100 rda zinc citrate 10mg 100 rda copper citrate 1mg 100 rda selenium methionine 55 g 100 rda iodine potassium iodide 200 g 133 rda