Opinions differ on this point. We’re happy to share that the body can produce up to 15,000–20,000 IU of vitamin D on its own during a 10–15-minute sunbathing session without UV protection.

The German Nutrition Society (DGE) has specified an estimated adequate intake of 20 µg of vitamin D per day for children one year and older and for adults. This corresponds to 800 International Units (IU).

You can safely determine your individual daily dose by having your blood vitamin D level measured and using a vitamin D calculator to calculate the dose. It is recommended to have the level rechecked after a few months to see if the desired result has been achieved.

You can have the test performed by your doctor or therapist, or use a self-test kit, such as “preventis Vitamin D” from our product range.

In Germany and the EU, manufacturers and consultants are legally restricted to publicly recommending a maximum daily intake of 1,000 IU of vitamin D.

This does not mean that higher doses are not possible or advisable—especially in cases of a confirmed deficiency or therapeutic need, a doctor or therapist may prescribe higher doses on an individual basis. Our recommended daily intake is based on legal requirements and is not a substitute for an individual medical recommendation. If your doctor or therapist has recommended a higher dosage due to a confirmed vitamin D deficiency or your individual situation, you may follow that recommendation.

Vitamin D3 cannot be derived from plants. In our vegan products, it therefore comes from the fungal component of lichens. In our vegetarian products, it comes from lanolin, the natural wax found in sheep’s wool.

Our product range includes both vitamin D3 single-nutrient supplements and combination products with additional fat-soluble vitamins.

Vitamin D3 Single-Nutrient Supplements

The single-nutrient supplements specifically contain vitamin D3 and are available in different dosages and dosage forms:

• Vitamin D3 2,000 IU
• Vitamin D3 5,000 IU
• Vitamin D3 10,000 IU
• Liposomal Vitamin D3 1,000 IU (vegan)

They are suitable for people who wish to supplement vitamin D3 specifically and without additional vitamins. The appropriate dosage should be based on individual requirements and, where applicable, on vitamin D status determined by a physician.

Combination Products

The combination products include the various LipoVitamine products as well as supplements containing vitamin D3 and vitamin K2.

LipoVitamine 5,000

LipoVitamine 5,000 was formulated with a clear focus on vitamin D3, for example to specifically support vitamin D intake. The additional fat-soluble vitamins K2, A and E are included in comparatively lower amounts and complement the formulation.

LipoVitamine 1,000

In LipoVitamine 1,000, vitamins A and K2 are present in higher amounts in relation to the vitamin D3 content. The product is therefore suitable not only for supporting the maintenance of normal vitamin D levels, but also offers additional nutritional benefits:

• Vitamin A contributes to the maintenance of normal vision, normal skin and normal mucous membranes.
• Vitamin K contributes to the maintenance of normal bones and normal blood clotting.
• Vitamin D contributes, among other things, to the maintenance of normal bones and teeth and normal muscle function.

LipoVitamine 1,000 Vegan

LipoVitamine 1,000 Vegan is the vegan version of the formulation and also contains vitamin D3 in combination with other fat-soluble vitamins. Unlike the classic version, the product does not contain vitamin E. The vegan formulation is liposomal and therefore has a milky appearance.

LipoVitamine Beta

LipoVitamine Beta combines vitamin D3 with beta-carotene as a plant-based precursor of vitamin A. The product is available in two dosages:

• LipoVitamine Beta with 1,000 IU vitamin D3
• LipoVitamine Beta with 2,500 IU vitamin D3

LipoVitamine 10,000

In terms of dosage, LipoVitamine 10,000 corresponds to ten times the amount contained in LipoVitamine 1,000. The product is formulated as a capsule and therefore provides a correspondingly higher-dose supplementation of the included fat-soluble vitamins A, K2 and E.

Vitamin D3 and K2

The combination of vitamin D3 and vitamin K2 is available in two dosages:

• Vitamin D3 + K2 with 1,000 IU vitamin D3 (drops)
• Vitamin D3 + K2 with 5,000 IU vitamin D3 (capsules)

Value Sets

LipoVitamine 1,000 and LipoVitamine 5,000 are also included in various value sets:

• Vitamin Complex 1,000 and 5,000 = combination of LipoVitamine and HydroVitamine.
• Vitamin/Mineral Complex 1,000 and 5,000 = combination of LipoVitamine, HydroVitamine and OrgaMin.

This allows fat-soluble and water-soluble vitamins as well as selected minerals to be combined according to individual requirements.

Here you can find a clear overview and explanation of the different products: Vitamin D3 Drops

* Vegetarian, as the vitamin D is derived from lanolin, the wool fat of sheep. Vegan vitamin D is derived from lichen.

** The liposomal formulation can be taken independently of meals, which is a major advantage.

No, vitamin D3 and vitamin K2 do not necessarily have to be taken together or at the same time. Both vitamins fulfil distinct functions: vitamin D contributes to the normal absorption and utilisation of calcium, as well as to the maintenance of normal bones. Vitamin K also contributes to the maintenance of normal bones and to normal blood clotting. As both are fat-soluble, it is recommended that they be taken with a meal containing some fat.

Yes, vitamin D3 can generally be taken without additional vitamin K2. Vitamin K2 is not required for either the absorption or the activation of vitamin D3. Whether a combination or single-ingredient supplement is more suitable depends on individual needs, diet and any medication being taken.

Most of the NatuGena capsule products are size 00 (8,2 × 23,3 mm) to 0 (7,3 × 21,2 mm). Information on the capsule sizes of individual products can be found on the relevant product page or by contacting info@natugena.de

NatuGena® capsule sizes – for comparison and understanding.

9,5 × 26,1 mm	8,2 × 23,3 mm	7,3 × 21,2 mm	6,6 × 19,0 mm	6,1 × 17,3 mm	5,6 × 15,4 mm
z. B. Lysin & Vitamin C, Monacolin K 3	z. B. Magnesia 7+1, Mitochondrien­Aktivator 44+14, HeparAktiv	z. B. ZellEnergie, MultiVegan, Astaxanthin	z. B. HistaBakt, Bor, Bioaktiver B-Komplex	not in use	z. B. Kupfer, Lipo­Vitamine 10 000, Mangan-Komplex

We work with the independent laboratory AgroLab, which we commission to perform microbiological and heavy metal tests.

In our microbiological testing, we measure the aerobic mesophilic plate count (total plate count), as well as the levels of Escherichia coli (E. coli), yeasts, Salmonella, molds, and staphylococci.

For heavy metals, we test for arsenic, lead, cadmium, and mercury in accordance with the limit values specified in Regulation (EU) 2023/915.

The optimal duration of use depends on the specific nutrient, your initial situation, diet, and individual requirements.

There is therefore no one-size-fits-all recommendation for how long a product should be taken. For products intended to support nutrient intake over a longer period, use over several weeks to months may be appropriate. In many cases, a period of around three months may be suitable before nutrient status and further requirements are reassessed.

In the case of diagnosed deficiencies, medical conditions, or the use of medication, the use of supplements should be individually discussed with a doctor or qualified healthcare professional.

The optimal time to take a supplement depends on the specific nutrient, individual tolerance, and the composition of the product. However, some ingredients can be particularly well suited to certain times of day or meals.

In the morning

Stimulating ingredients are often preferably taken in the morning or during the first half of the day. These include, for example:

• Coenzyme Q10
• Green tea extract
• Certain B vitamins

Especially for sensitive individuals, it may be advisable to avoid taking stimulating ingredients immediately before bedtime.

Throughout the day

For some nutrients, it may be beneficial to divide the daily amount into several doses.

Water-soluble vitamins such as B vitamins and vitamin C can be taken throughout the day.

Magnesium can also be divided into several doses rather than taking the entire daily amount at once. This may improve tolerance, particularly with higher amounts.

In the evening

Depending on the type of magnesium compound, taking it in the evening may be beneficial. Magnesium glycinate, for example, is often preferably taken in the evening.

In general, however, the best time to take a product also depends on when it is individually best tolerated and can be reliably incorporated into your daily routine.

With a meal

Some nutrients benefit from being taken together with a meal.

Fat-soluble vitamins A, D, E, and K can be taken together and ideally with a meal containing some fat.

Omega-3 fatty acids should also be taken regularly with a meal. Omega-3 oils can be combined well with fat-soluble vitamins.

Many plant-based ingredients can also be taken as part of a meal or together with omega-3 products. However, the optimal timing depends on the specific plant compound and product formulation.

Zinc can cause nausea or stomach discomfort on an empty stomach in some people. If you have a sensitive stomach, it is therefore advisable to take zinc with a meal.

Between meals

Iron is often taken separately from meals, as various foods and beverages can affect its absorption. It is particularly advisable to leave a gap between iron and:

• Coffee and tea
• Caffeinated beverages
• Milk and dairy products
• Calcium- or mineral-rich supplements

However, if you have a sensitive stomach, iron can also be taken with a meal. In this case, individual tolerance is more important than a theoretically optimal intake situation.

Enzyme supplements vary depending on their intended use: digestive enzymes are generally taken with meals. Products that are specifically intended to be taken between meals may, for example, be taken around 30 minutes before a meal. The product's specific recommended intake should always be followed.

Around exercise

Proteins and amino acids can be taken both before and after training.

If you exercise on an empty stomach, taking them around 30 minutes before training may be beneficial. If you have already eaten a protein-rich meal, you can also plan your protein intake for after training.

In general, ensuring sufficient protein intake throughout the entire day is more important than adhering to a narrow time window around your workout.