Support your bones, muscles, and immune system with Nu U Nutrition Vitamin D3 4000 IU — a high-strength, once-daily supplement designed for maximum convenience and value. Each softgel delivers 4000 IU of Vitamin D3, providing four times the strength of standard 1000 IU products, meaning just one softgel per day is enough to meet your needs. Vitamin D is essential for maintaining normal bones and teeth, supporting muscle function, and contributing to the normal absorption and utilisation of calcium and phosphorus.* Vitamin D3 (cholecalciferol) is the same form naturally produced by the body when exposed to sunlight, making it the preferred choice for supplementation — particularly for those with limited sun exposure. With 365 small, easy-to-swallow softgels per bottle, this product provides a full 12-month supply, offering outstanding long-term value and eliminating the need for frequent reordering. The softgels are designed for comfort and convenience, making daily supplementation simple and consistent. Manufactured in the UK to strict GMP standards, our Vitamin D3 is produced in line with UK and EU quality regulations to ensure purity, safety, and reliability. Free from unnecessary additives, this supplement reflects Nu U Nutrition’s commitment to quality and trust. Founded in 2014 as a family business, Nu U Nutrition continues to deliver premium supplements designed to make everyday wellness simple and accessible.

Nu U Nutrition continues to deliver premium supplements designed to make everyday wellness simple and accessible.

Something not quite right? You have 28 days from the day you receive it, to send something back.

Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys, and swimwear or lingerie if the hygiene seal is not in place or has been broken.

Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses, and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.

Click here to view our full Returns Policy.