Douglas Laboratories Vitamin D 1000 IU Liquid Supplement Posted on May 1, 2017 by TOSMS Douglas Vitamin D 1000 IU Liquid contains several kinds of vitamin D Each serving contains 25 mcg vit. D3 Take 1 drop daily Vitamin D Liquid – 15 ml Bottle. Contains Vitamin D3 (Cholecalciferol) Discount Price: £14.76 Buy from Amazon