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Pregnancy & Breastfeeding

Vitamin D in pregnancy

Vitamin D has been discussed for years. Its relevance is undisputed even before pregnancy. But why is vitamin D also important for expectant mothers, how high is the need when you are pregnant and what is there to consider when taking vitamin D? Let...

from Mag. Margit Weichselbraun

on 07.03.2024

Micronutrients

Vitamin B: Effect, intake & deficiency

Vitamins play an important role in our health and wellbeing. Among the many vitamin groups, the group of B vitamins stands out in particular. These complex and diverse nutrients are essential for a variety of bodily functions, from energy production...

from Camilla Freinek, BSc MSc

on 25.07.2024

Micronutrients

Vitamin B12 deficiency: Symptoms, causes & management

Do you often feel tired, forgetful or somehow off track? These symptoms could indicate a vitamin B12 deficiency! Vitamin B12 is essential for blood formation, cell renewal and a functioning nervous system. A severe deficiency can pose health risks....

from Mag. Margit Weichselbraun

on 15.06.2024

Micronutrients

Niacin (vitamin B3): effect, requirement & deficiency

Niacin is one of the crucial building blocks for our body. As a water-soluble vitamin, it can only be stored by the body to a limited extent, which makes a regular supply through food necessary. But what makes niacin so special? In this article, you...

from Camilla Freinek, BSc MSc

on 21.01.2025

Vitamin D & obesity: Who affects whom?

Are you familiar with the chicken-and-egg dilemma? That's exactly how the discussion surrounding vitamin D and obesity feels. Which comes first: low vitamin D levels or those extra kilos on the scales?

from Mag. Margit Weichselbraun

on 02.10.2025

Micronutrients

Vitamin D deficiency – under-supplied despite sunlight?

Sunlight that tickles our nose not only warms our hearts, but is also the key to a vital nutrient - vitamin D. Paradoxically, despite seemingly adequate sunlight, up to 57 per cent of adults suffer from a vitamin D deficiency - a silent health risk...

from Mag. Kristiina Singer, MSc

on 24.11.2025

Micronutrients

Vitamin D (calciferol): more than just a vitamin for bones

Without the sun, life is impossible – this applies to plants, animals and humans alike. We need sunlight to produce the important vitamin D. Find out more about vitamin D, its production and its effect on our body here.

from Lisa Ressi, MSc

on 16.01.2025

Micronutrients

Best vitamin D supplements

Are you looking for a really good vitamin D supplement, but can't see the wood for the trees on the market? Then click here and find out which vitamin D is the best!

from Mag. Margit Weichselbraun

on 09.09.2025

Pregnancy & Breastfeeding

Vitamin D for babies & newborns: yes or no?

Breast milk and high-quality infant formula are perfectly tailored to the needs of babies. But why is vitamin D still recommended for little ones? Is it not enough to spend a lot of time outdoors with your baby and to absorb the vitamin through...

from Mag. Margit Weichselbraun

on 14.03.2024

Micronutrients

Vitamin B12: not just for strong nerves

Vitamin B12 is a real all-rounder – it can do much more than just support your nervous system! Especially if you are vegan or vegetarian, you should know how to get enough B12. We will show you how to optimally cover your vitamin B12 requirements...

from Mag. Margit Weichselbraun

on 14.06.2024

Micronutrients

Vitamin A: Need, effect & deficiency

Vitamin A is an essential vitamin that plays an important role in numerous bodily functions. In this article, you will learn all the important information about the requirement for, the effect and the possible consequences of vitamin A deficiency.

from Lisa Ressi, MSc

on 16.09.2024

News in science & research

Study: Vitamin D for athletes – quite the power boost!

Like previous studies with seniors, a recent Austrian study with healthy amateur athletes shows: a sufficient intake of vitamin D supports muscle function. Click here for more information on the study from our series “Science news”.

from Mag. Margit Weichselbraun

on 01.03.2019

12 of 43 results shown

How does vitamin D affect the immune system?

Vitamin D supports the normal functioning of the immune system – in a completely natural way. Especially during the dark months of the year, a good supply of vitamin D can help keep your immune system in balance.

Vitamin D

Can I obtain vitamin D from food?

In practice, it is not possible to meet the daily vitamin D requirement through food. By far the most vitamin D is found in fatty fish, such as salmon and herring. To a far lesser extent it is found in liver, egg yolks and some fungi, such as chanterelles and wild mushrooms.

Vitamin D

How does the body produce vitamin D?

The human body produces 80–90% of vitamin D with the help of sunlight. UVB radiation is essential for this. The UVB radiation contained in sunlight first converts a form of cholesterol in the outer layer of skin into previtamin D3 and then converts this into vitamin D3. The body then has to convert the vitamin D3 that has been created in this way into its storage form calcidiol or its active form, the vitamin D hormone calcitriol, via metabolic pathways.

What is the best liposomal vitamin C?

There is no such thing as ‘the best’ liposomal vitamin C for everyone – but there is the right one for you. Choose wisely: opt for highly bioavailable products that are free from unnecessary additives. Look for high-quality phospholipids, ideally from sunflowers rather than soy, and take a close look at the origin and quality certifications of the preparation, such as seals of approval or independent tests.

Vitamin B12

Which fruits and vegetables contain vitamin B12?

Fruits and vegetables do not contain vitamin B12, at least not in significant amounts.

Vitamin B12

Can vitamin B12 be stored in the body?

Vitamin B12 is the only water-soluble vitamin that the human body stores in large quantities. Vitamin B12 stores can last for about 3-4 years.

Vitamin D

Do vitamin D preparations make sense in combination with vitamin K?

The synergistic effects of vitamins D3 and K2 are the focus of current science and research, which has led to the development of the micronutrient preparation Biogena Vitamin D3 & K2. Vitamin K contributes to normal blood clotting, helps maintain normal bones just like vitamin D and is therefore a sensible addition to vitamin D supplementation.

Is it possible to overdose on vitamin C?

An overdose of vitamin C is generally possible, but relatively rare and in most cases not serious, since excess vitamin C is usually excreted in the urine. The body can only absorb and use a limited amount of vitamin C. Only persons with impaired renal function or metabolic disease should exercise caution with vitamin C. In such a case, consult a medical professional. In general, it is advisable not to exceed the recommended daily dose of the product when taking vitamin preparations.

What is the best source of vitamin D?

Your body produces vitamin D itself – provided your skin gets enough sunlight. However, the supply from the sun is often insufficient. High-quality vitamin D3 supplements can help to support your supply in a targeted manner!

Do mushrooms contain a lot of vitamin D?

Yes, certain types of mushrooms, such as chanterelles, button mushrooms, boletus and butter mushrooms, contain a lot of vitamin D, unlike other foods.

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Vitamin D

Buy vitamin D in various dosage forms for your individual needs ► Capsules, drops & gummies ✓ high-dose & combi-preparations

Vitamin C

Vitamin C supplementation as capsules or in liquid form ✓ as pure vitamin C or as a complex with valuable other ingredients ✓ Buy now

Vitamin E

Vitamin B

B vitamins are particularly important for the nervous system and the psyche. But vitamin B is also needed when it comes to fatigue and listlessness

Vitamin B12

100% vegan vitamin B12 supplements in various forms - capsules and drops - as well as high-dose & combination preparations ► buy them online at BIOGENA

Vitamin K2

Vitamin K is also considered the "bone vitamin". How important is the combination with vitamin D? Which foods contain vitamin K?

Vitamins

BIOGENA vitamin supplements: ✓ Food supplements for all needs ✓ Vitamin capsules, drops & powder ➤ Buy vitamins now!

Multivitamins

Buy multivitamin supplements in various dosage forms for your individual needs ► Capsules, drink powder in sticks, juice and much more.

Immune system & defences

Support your defences with high-quality vitamins and micronutrients for immune system. ✓ Vitmin C ✓ Zinc ✓ Combined preparations

Cologne List ®

The Cologne List® lists food supplements with a minimised doping risk. Read here which of our products are listed and more!

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