rubyni® Vitamin D
Vitamin D – the all-rounder for good health
Have you ever heard of the “sun vitamin”? This euphonious term refers to vitamin D, which our body can produce itself – provided our skin is regularly exposed to sufficient sunlight.
Vitamin D has many important functions: We need it for strong bones, healthy teeth and strong muscles, but also as an important building block for a powerful immune system. A good supply of vitamin D is also important for pregnant women so that the child grows up healthy.
However, we cannot always get enough sun in our everyday lives. An undersupply of vitamin D is therefore widespread in Germany. With rubyni® Vitamin D you can specifically prevent a deficiency.
rubyni® Vitamin D: natural vitamin D for your health
- Contributes to the maintenance of normal bones and reduces the risk of osteoporosis1
- Can counteract excessive tiredness2
- Is an important building block for a powerful immune system
- Supports cell division and is therefore also important for pregnant women3
- 100% vegan vitamin D3 (cholecalciferol) from GMO-free algae
- 1 capsule provides 20 µg = 800 international units (IU) of vitamin D3
- Free from colorants and flavorings and without preservatives
rubyni® Vitamin D can help you to cover your daily requirement of the vital substance from a natural and purely plant-based source. We obtain our vitamin D from selected algae and ensure the highest quality through careful processing. Our capsules contain the vitamin in the form of vitamin D3 (cholecalciferol). The body can easily absorb this form and utilize it directly. Absorption is supported by the other high-quality ingredients: vitamin E and organic broccoli powder.
How much vitamin D does our body need?
When sufficient sunlight hits our skin, this stimulates the body’s own production of vitamin D. Ideally, the body can meet its needs via this practical mechanism. However, in the winter months in our latitudes, the intensity of the sun is not sufficient for vitamin D production.1,4 And even in summer, we often spend time indoors – or only go out into the sun well protected in order to sensibly avoid sunburn.
We generally only absorb small amounts of vitamin D through our diet. It is found, for example, in egg yolk, liver and fatty fish such as salmon.1,4
Around 15 percent of German adults have a pronounced vitamin D deficiency. And more than half of all Germans are at least deficient. This was determined by the German Cancer Research Center (dkfz) in 2023.5
Preventing a deficiency individually with food supplements
In order to avoid a vitamin D deficiency, it can be useful to take a targeted dietary supplement. But what is our daily requirement? In the absence of endogenous production, the German Nutrition Society (DGE) recommends an intake of 20 micrograms (μg) of vitamin D per day for women and men. This corresponds to 800 international units (IU).4 The European Union specifies a nutrient reference value (NRV) of 5 micrograms per day for both sexes.6 However, this assumes a certain level of endogenous vitamin D production.
Important: The recommendations for intake refer to healthy people. In addition, a person’s individual requirements can vary, so the intake of vitamin D should be tailored to the needs of the individual person. For example, the skin’s ability to produce vitamin D decreases with age. On top of this, many older people only spend a limited amount of time outdoors.1
The best supply with rubyni® vitamin D
One rubyni® vitamin D capsule provides you with 20 micrograms, i.e. 800 IU, of the important vitamin D3 – and makes an important contribution to your health with its good dosage. The amount corresponds to 400% of the daily requirement according to the nutrient reference value (NRV*) – and exactly the amount recommended by the DGE if you do not produce your own.
At the same time, rubyni® Vitamin D provides you with 3.6 milligrams (mg) of vitamin E (D-alpha-tocopherol) per capsule – corresponding to 30 % of the daily requirement according to NRV*.6 We have added it to improve the bioavailability, i.e. the absorption of vitamin D.
Vitamin E is one of the antioxidants that can render so-called free radicals harmless. Free radicals occur naturally in our bodies and can damage cells.7
Vitamin D can be taken at any time of the day. As vitamin D and E are fat-soluble vitamins, we recommend taking the capsules together with a little fat in the form of a good vegetable oil or with a meal – one capsule of rubyni® vitamin D per day.
Note: The stated recommended daily intake must not be exceeded.
*NRV = nutrient reference value (for adults according to the Food Information Regulation (LMIV)
rubyni® vitamin D at a glance: What’s in our capsules
rubyni® Vitamin D is a food supplement with vegan vitamin D3 that guarantees you the highest quality from a natural source.
Ingredients:
- Cholecalciferol (= vitamin D3) from algae
- Soybean extract (D-α-tocopherol = vitamin E)
- Freshly harvested organic broccoli powder from German cultivation in raw food quality
- Coating agent hydroxypropyl methylcellulose (plant-based capsule shell, certified vegan)
In our capsules, the vitamin is in the form of active vitamin D3, which can be immediately utilized by the body. Our preparation also provides you with high-quality natural vitamin E.
Pack size: 90 capsules – in a tin made from recycled PET.
Note: Food supplements should not be used as a substitute for a balanced and varied diet or to replace a healthy lifestyle.
GMO-free and from sustainable cultivation
We obtain the vitamin D3 in rubyni® Vitamin D from GMO-free algae. These grow off the coasts of Europe, where they are cultivated in a controlled manner and harvested sustainably. We have also opted for a product from a natural plant source for vitamin E: it comes from GMO-free, high-quality soybeans. We have combined the vitamins with freshly harvested organic broccoli powder from Germany, which is characterized by sustainable cultivation and high quality.
Good to know:
Without vitamin D, bones and immune defenses suffer
Vitamin D is essential for numerous processes in the body. Its importance for bone health and the immune system is best known.1,4 However, our muscles and many other important functions also rely on this vital substance.
Vitamin D helps to keep our bones strong and our teeth healthy. This is because it regulates the balance of two substances that are essential for the stability of bones and teeth: Calcium and phosphate. A vitamin D deficiency can therefore increase the risk of bone loss.1,4 Osteoporosis particularly affects women after the menopause. Those who ensure stable bones from a young age are in a better position when natural bone loss sets in from midlife onwards.9
Vitamin D is also essential for the normal functioning of our immune system.4 For example, it has an anti-inflammatory effect and activates white blood cells, which are responsible for defending against pathogens, among other things.10 A vitamin D deficiency can make us more susceptible to infections, for example. A good vitamin D level, on the other hand, can protect us from acute respiratory diseases, such as the common cold.11
Better recovery for your muscles
Cell division and cell repair, the formation of proteins and the maintenance of muscle function: our body also relies on this versatile vital substance for these processes. If we lack vitamin D, this can lead to bone, joint and muscle pain as well as muscle weakness.1
Vitamin D is essential for pregnant women so that the unborn child can grow well and develop healthy bones. A deficiency can also endanger the health of the expectant mother: It increases the risk of pregnancy complications such as diabetes or high blood pressure.
What are the health benefits of vitamin D?
Vitamin D supports your body’s health in many ways13:
Vitamin D
- contributes to the normal absorption/utilisation of calcium and phosphorus
- contributes to normal blood calcium levels
- contributes to the maintenance of normal bones
- contributes to the maintenance of normal muscle function
- contributes to the maintenance of normal teeth
- contributes to the normal function of the immune system
- has a function in cell division
1) German Nutrition Society (DGE). Selected questions and answers on vitamin D. Status: 2012. https://www.dge.de/gesunde-ernaehrung/faq/vitamin-d/, last accessed on 20.05.2025
2) Nowak A et al. Effect of vitamin D3 on self-perceived fatigue. Medicine (Baltimore). 2016 Dec 30; 95(52): e5353. https://pmc.ncbi.nlm.nih.gov/articles/PMC5207540/
3) Alta Clinic. Vitamin D in pregnancy. Status: 29.11.2022. https://www.alta-klinik.de/ratgeber/vitamin-d/vitamin-d-schwangerschaft/, last accessed on 20.05.2025
4) German Nutrition Society (DGE). Reference value: Vitamin D. Status: 2012. https://www.dge.de/wissenschaft/referenzwerte/vitamin-d/, last accessed on 20.05.2025
5) German Cancer Research Center (dkfz). Reduced cancer mortality with daily vitamin D intake. Press release from 09.05.2023. https://www.dkfz.de/aktuelles/pressemitteilungen/detail/verringerte-krebssterblichkeit-bei-taeglicher-vitamin-d-einnahme, last accessed on 20.05.2025
6) Regulation (EU) No 1169/2011 of the European Parliament and of the Council of October 25, 2011. https://eur-lex.europa.eu/legal-content/DE/TXT/PDF/?uri=CELEX:32011R1169&from=EN, last accessed on 20.05.2025
7) German Nutrition Society (DGE). Reference value: Vitamin E. Status: 2000. https://www.dge.de/wissenschaft/referenzwerte/vitamin-e/, last accessed on 20.05.2025
8) Tomlinson PB et al. Effects of vitamin D supplementation on upper and lower body muscle strength levels in healthy individuals. A systematic review with meta-analysis. J Sci Med Sport. 2015 Sep; 18(5): 575-80. https://linkinghub.elsevier.com/retrieve/pii/S1440-2440(14)00163-7
9) Foundation for Quality and Efficiency in Health Care (IQWiG). Osteoporosis and bone fractures. Status: 05.10.2022. https://www.gesundheitsinformation.de/osteoporose-und-knochenbrueche.html, last accessed on 20.05.2025
10) Prietl B et al. Vitamin D and immune function. Nutrients. 2013 Jul 5 ;5(7): 2502-21. https://pmc.ncbi.nlm.nih.gov/articles/PMC3738984/
11) German Nutrition Society (DGE). Good vitamin D status can protect against acute respiratory infections. Press release 30/2020. https://www.dge.de/presse/meldungen/2020/guter-vitamin-d-status-kann-vor-akuten-atemwegsinfektionen-schuetzen/, last accessed on 20.05.2025
12) DocCheck Calciferol: The hormone in the vitamin coat. As at: 11.10.2024. Ed.: DocCheck Community GmbH. https://www.doccheck.com/de/detail/articles/49580-calciferol-das-hormon-im-vitamin-mantel, last accessed on 05.06.2025
13) Commission Regulation (EU) No 432/2012 of 16 May 2012 establishing a list of other permitted health claims made on foods… Status: 19.08.2024. https://eur-lex.europa.eu/legal-content/DE/TXT/PDF/?uri=CELEX:02012R0432-20240819, last accessed on 03.06.2025
convinced by rubyni®
As a former professional athlete and health-conscious person, my physical performance and well-being are extremely important to me. That's why I take rubyni® with elderberry - it's now part of my daily routine. I am convinced of the positive effects of elderberries on my immune system, my energy balance and my fitness, especially during regeneration after periods of stress
Tobias Angerer
Cross-country skier
I work as a nutrition and health consultant and am a trained phytotherapist. Transparency, sustainability, and quality are very important to me. And I have to say that rubyni® has completely convinced me as a brand. The capsules contain only extremely high-quality and natural ingredients whose effectiveness has been proven by studies and which supply the body with important nutrients. On my YouTube channel Ohlala & Solala I have published some videos about my personal rubyni® journey. There I share even more about what makes this supplement so special from my point of view.
Andrea Sokol
Phytotherapist | Nutrition and Health Consultant
As a biathlete, I have to be in top shape and perform to the letter. I had big problems with that in the past. My body was always weakened and I had to accept many setbacks. When I was looking for a solution to support my immune system permanently, I found elderberries as a superfood through my alternative practitioner. In the meantime, I take rubyni® with elderberries daily. The capsules are also super handy when I'm on the road in the World Cup. rubyni® is a valuable help for me in stressful competition phases and my immune system is finally back on top.
Hanna Kebinger
biathlete
For more than 25 years, my focus has been on holistic, naturopathic medicine, with a particular interest in nutritional and biological topics. During this time, I have intensively studied current research findings (e.g. on orthomolecular medicine, epigenetics, nutrigenomics, phytotherapy). I found rubyni's philosophy of using total extracts with the complete efficacy profile of the entire fruit matrix exciting and convincing from the very beginning. That's why I was happy to take on the task of developing new products that would contain rubyni , but at the same time - in the sense of a synergism of effects - other ingredients for a specific purpose. rubyni® Visio now contains carefully coordinated ingredients that are specially formulated to meet the specific needs of the eyes. Valuable plant extracts and micronutrients have been combined to form a high-quality dietary supplement. This helps to maintain eye health and support vision.
Prof. Dr. rer. nat. Michaela Döll