Vitamin D3

50 mcg (2000 IU) in Essential for Women

SourceNottingham, UK
Found inFish, milk, and fortified dairy products
ManufacturerThe GHT Companies / ESB Developments Ltd
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Vitamin D3


Healthy Bones*

Immune Support*


Ritual uses Vitashine™, the world’s first Certified Vegan D3 ingredient made from globally-sourced lichen, unlike the commonly used sheep's wool or fish liver oil.

Vitamin D3 assists with calcium absorption.*


Vitamin D3

Evidence-Based or Bust

We use nutrients backed by a significant body of research that is growing every day. Of the thousands of unaffiliated studies our in-house scientists sorted through to guide our choices, the titles below are the most relevant MVPs.

There are 50,918 studies on Vitamin D and counting

Vitamin D. Fact sheet for health care professionals - 2018

Office of Dietary Supplements National Institutes of Health

U.S. Department of Agriculture, Agricultural Research Service. Nutrient intakes from food and beverages: mean amounts consumed per individual, by gender and age. What We Eat in America, NHANES 2015-2016 - 2018


The impact of 1-year vitamin D supplementation on vitamin D status in athletes: a dose-response study - 2016

DSM Biotechnology Center, Maastricht University, Netherlands Olympic Committee, Wageningen University

Effects of vitamin D2-fortified bread v. supplementation with vitamin D2 or D3 on serum 25-hydroxyvitamin D metabolites: an 8-week randomised-controlled trial in young adult Finnish women - 2016

University College Cork, University of Denmark, University of Helsinki

Why the optimal requirement for Vitamin D3 is probably much higher than what is officially recommended for adults - 2004

University of Toronto

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