Northwood Health Foods : Bio-Vitamin D3 5000iu-150mcg (cholecalciferol) : Northwood Health Foods
International unit - Wikipedia
VIT D3 125 UG/5000 IU SOFTGEL 60 - NP , Guava Health - Glasgow's Leading Health Food Store
Solgar Vitamin D3 (Cholecalciferol) 1000 IU (25 µg) Tablets - Pack of 90 - Support a Healthy Immune System - Stronger Teeth and Bones - Vegan and Gluten Free : Amazon.co.uk: Health & Personal Care
Natures Aid Vitamin D3 Liquid 2500iu (Vegan) - Vegan from Natures Aid UK
Vitamin D3 2500 IU Softgels - NaturesPlus-UK
IU VERSUS MG: HOW TO ACTUALLY READ A LABEL – Tonic Health