Immune System Immune System

Karin

10-05-2025

“Great that there are also vitamin D3 capsules made from algae! Better for me and great for nature!”

Vitamin D3

Vitamin D3

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Your daily vitamin D3 from a responsible source.

  • Support the immune system
  • Good for muscles & bones
  • Plant-based vitamin D3 from algae

1 MONTH FREE

Choose 6 months of vitamin D3 and get 1 month free, plus a free storage jar worth €10.

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Karin

10-05-2025

“Great that there are also vitamin D3 capsules made from algae! Better for me and great for nature!”

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Vitamin D3 is a plant-based capsule containing 20 µg of vitamin D3 from algae. An easy way to supplement your daily vitamin D, especially on days when you don't get much sunlight. It can help with:

Immune system: vitamin D contributes to the normal functioning of the immune system.

Muscles: vitamin D contributes to the maintenance of normal muscle function.

Bones: vitamin D contributes to the maintenance of normal bones.

Teeth: vitamin D contributes to the maintenance of normal teeth.

1 softgel daily during or after a meal

Ingredients

Oil from the microalga Schizochytrium sp., vitamin D3 from algae, antioxidants: mixed tocopherols, sunflower lecithin, rosemary extract. Capsule: modified corn starch, glycerol, carrageenan, sodium carbonate

Nutrition

Nutrient Amount % RI
Vitamin D3 20 µg 200
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Product details

Vitamin D3

Support your immune system with vitamin D3 from algae

Vitamin D3 is a fat-soluble vitamin that your body naturally produces through sunlight. Since many people don’t get enough during the darker months, plnktn vitamin D3 can be a valuable addition to your daily routine. It contributes to the normal functioning of the immune system, supports muscle function and helps maintain strong bones.

Comparison

Not your standard vitamin D

Most vitamin D3 is made from lanolin, the fat from sheep's wool, and then goes through multiple chemical processes. Our vitamin D3 comes directly from algae: the same molecule, without animals and without chemical detours.

D3 from algae
D3 from wool grease
Vitamin D3, the form from sunlight
Without animal-derived ingredients
Without chemical agents
100% plant-based

What is vitamin D3 good for?

Vitamin D is a fat-soluble vitamin that the body can produce itself when exposed to sunlight. It is important for your immune system, muscles, and bones. 

A vitamin D3 deficiency is more common:

  • if you have darker skin
  • if you are not outdoors every day between 11 a.m. and 3 p.m.
  • in pregnant women
  • in women with light skin aged 50 and over
  • in men with light skin aged 70 and over
  • in children up to and including 3 years of age

A deficiency occurs more frequently, particularly during the winter months. Do you spend a lot of time indoors? And are you unsure whether you are getting enough vitamin D3 from the sun or your diet? Then a supplement is a solution to keep your vitamin D3 levels on track.

What makes plnktn's vitamin D3 unique?

Our vitamin D3 comes from algae and is therefore a 100% plant-based alternative to many other vitamin D3 supplements. These are often made from lanolin: sheep's wool grease.

In addition, we combine 20 µg of vitamin D3 with 75 µg of vitamin K2. Vitamin D supports the absorption of calcium, and vitamins D and K contribute to the maintenance of strong bones.

This way, you get vitamin D3 from a plant-based source, combined with K2 in a single capsule.

How much vitamin D3 do I need per day?

The recommended daily allowance (RDA) is 10 mcg per day. 

When is the best time to take vitamin D3?

We recommend 1 capsule per day. Vitamin D3 is best taken with a meal, as it is a fat-soluble vitamin.

Is vitamin D3 free of allergens?

Yes, it is free of allergens.

Is vitamin D3 safe to take during pregnancy/breastfeeding?

Yes, it is safe to take during pregnancy and while breastfeeding. 

What are the ingredients of your vitamin D3?

MCT oil, vitamin K2 (menaquinone-7), vitamin D3 from algae. Capsule: glycerol, modified pea starch, carrageenan.

What is the difference between vitamin D and D3?

Vitamin D is the umbrella term. D3 is the form that the body best recognizes, absorbs, and therefore uses.

How do I know if I have a vitamin D3 deficiency?

A deficiency is not always immediately noticeable. Fatigue, listlessness, or getting sick more often can be signs. If you are in doubt, a test through your GP can provide clarity.

Is plant-based vitamin D3 as effective as animal-derived D3?

Yes. Vitamin D3 from algae has the same effect. 

For those who want to grow

Our athletes rely on plnktn to perform at their peak – for the long term.

Pippa van Iersel

Two-time Dutch kitesurfing champion

Douwe Macare

Two-time Dutch skateboarding champion

Sara Eenhoorn

Mountaineer: climbed 10 x 6000+ meter mountains