We recently launched vegan vitamin D supplements. Here’s why they’re important and when you might need to take a supplement.


What is vitamin D?

Vitamin D is an essential fat-soluble vitamin that’s needed for healthy bones, muscles, and a strong immune system.

Low vitamin D levels are linked to a range of conditions like osteoporosis, heart disease, diabetes, cancer, and depression.

When to take a vitamin D supplement

Your body is able to make all the vitamin D you need. But this can only happen when your skin is exposed to sunlight. So during autumn and winter, when sunlight exposure is at an all-time low, it’s really common for your vitamin D levels to drop.

You can get vitamin D from foods like oily fish, liver, egg yolks, and fortified food but most people don’t get enough this way.

You might also be at an increased risk of developing vitamin D deficiency if you:

  • are vegan or vegetarian
  • have darker skin
  • are elderly
  • always wear sunscreen
  • stay indoors a lot
  • cover up most of your skin outdoors

As a result, low vitamin D levels are very common — in fact, 45% of Thriva customers had low levels last winter. Because of this, Public Health England advises that everyone should consider taking a vitamin D supplement from October to March.

To double-check whether you need a vitamin D supplement or not, it’s possible to measure your vitamin D levels with a blood test.

What’s in our vitamin D supplement?

Our vegan vitamin D supplement is made from the plant material lichen — a combination of algae, fungi, and cyanobacteria. It’s also in the form vitamin D3 (cholecalciferol) which is the form your body finds easiest to absorb and use.

We only use the highest quality, ethically sourced ingredients. Plus our vitamin D doesn’t contain any additives or anything which can limit your body from absorbing it. They’re also free from gluten, wheat, lactose, yeast, sugar, and soy. They also don’t contain any genetically modified organisms (non-GMO).

A daily supplement containing 10 mcg (400 IU) of vitamin D is recommended during autumn and winter to prevent a vitamin D deficiency. But if your levels are low, a higher dose is recommended. Our vitamin D supplement contains 25 mcg (1000 IU) vitamin D in each capsule — you should take one a day.

Never take more than 100 mcg of vitamin D a day as this can be harmful.

Why we chose a vegan vitamin D supplement

It was really important to us that our first vitamin range was as inclusive as possible. So we made sure to find a high-quality vegan source that can cater to everyone.



National Health Services (2017). Health: A-Z: Vitamins and minerals: Vitamin D. Retrieved 25 February 2019 from https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/.

National Institue of Health (2018). Office of dietary supplements. Vitamin D: Fact sheet for health professionals. Retrieved 9 January 2019 from https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/.

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Commercial Manager at Thriva - with a background in public health