rubyni selenium
indispensable – not only for the thyroid gland
Food supplement with selenium from organic sunflower seed extract. 100% vegan, gluten and lactose free, 100% organic.
Ingredients: Organic carrot powder, organic sunflower seed extract(Helianthus annuus; 0.5% selenium). Coating agent: hydroxypropyl methylcellulose (plant-based capsule shell).
One capsule contains 11 mg organic sunflower seed extract and provides you with 55 μg selenium. This is 100% of the daily requirement according to NRV*.
*NRV = nutrient reference value (for adults according to the Food Information Regulation (LMIV))
Recommended intake: Take 1 capsule daily unchewed with sufficient water. Do not exceed the recommended daily intake.
60 capsules 59,90€
Incl. VAT, plus shippingrubyni Selenium: An important building block for your body
Has your hair been looking thinner lately, are your nails brittle? Do you feel tired and exhausted quickly or do you lack the right appetite when eating? Then your body may be lacking a certain trace element: selenium.
Selenium plays an important role in the health of your hair and nails. Moreover, it is not only essential for the thyroid gland: if it does not have enough selenium available, this can lead to hypothyroidism. Last but not least, your body needs the vital substance to protect its cells and keep your immune system strong.
- Contributes to normal thyroid function 1,2,3
- Keeps hair and nails healthy 5
- Helps as a building block to protect the body’s cells from oxidative stress 1,2,3
- Is a basic element for a good immune system 1,2,4
- 100 % vegetable selenium from sunflower seeds
- naturally bound selenium that is readily available to the body
- 1 capsule provides 55 µg selenium
- Vegan, lactose- and gluten-free, 100% organic
How much selenium does your body need?
Selenium is a trace element. This means that your body only needs small amounts of the vital substance – but these are essential and must be supplied regularly. But what quantities are involved?
The German Nutrition Society (DGE) gives certain estimated values for selenium. This means that it assumes that the human body is sufficiently supplied with the trace element at this level. According to the DGE, women need 60 micrograms (µg) of selenium per day. For men, it is 70 micrograms per day. Those who are breastfeeding should consume 75 micrograms of selenium per day.3
The European Union (EU) recommends the same amount of selenium for both sexes: 55 micrograms per day. This is the so-called nutrient reference value (NRV for short). This is used as a guide in the manufacture of food supplements when it comes to the dosage of vitamins and minerals.6
Important: Just like an undersupply, an oversupply of selenium can also have a negative effect on your health. Possible symptoms include nausea or nerve disorders.2
All about our capsules
But how much selenium does the population actually consume? The European Food Safety Authority (EFSA) has calculated this. It looked at the average intake in various European countries – and came up with an amount of between 31 and 66 micrograms of selenium per day for adults.2
One rubyni selenium capsule provides you with 55 micrograms of this important trace element. The amount corresponds to exactly 100% of the daily selenium requirement according to the nutrient reference value (NRV*).
Recommended intake: Take one capsule daily with plenty of water and without chewing.
Recommended daily intake: Do not exceed the recommended daily intake.
*NRV = nutrient reference value (for adults according to the Food Information Regulation (LMIV))
rubyni selenium at a glance: What’s in our capsules
rubyni Selenium is a dietary supplement with vegan selenium from a natural source.
Ingredients:
- Organic sunflower seed extract (from Helianthus annuus, 0.5% selenium)
- Organic carrot powder
- Coating agent hydroxypropyl methylcellulose (plant-based capsule shell),
The selenium in our capsules is naturally bound. This means that the trace element is embedded in a plant matrix that contains other natural components.7 The main form is selenomethionine. It is considered to be particularly easy to utilize.7 It is said to have good bioavailability, which means that your body can absorb it optimally.
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.
Sustainably grown, gently extracted
The selenium in our rubyni selenium capsules comes from sunflower seeds that are grown sustainably and organically. The extraction is carried out gently using purely natural ingredients. This is the process by which the selenium is extracted from the seeds.
We have combined the trace element in our capsules with freshly harvested organic carrot powder from Germany. It is also sustainably grown and has raw food quality.
Good to know:
Selenium: For the thyroid, beautiful hair and healthy nails
What do you think of when someone tells you about an underactive thyroid gland (hypothyroidism)? The first thing that comes to mind for most people is iodine deficiency. What is less well known, however, is that a lack of selenium also prevents the thyroid gland from working properly. This is because the vital substance is necessary to activate important thyroid hormones.2
Selenium is also a basic building block for your immune system. But the vital substance is also essential for other functions in the body.
Your hair and nails need selenium to grow and stay healthy. This is because thyroid hormones influence hair-forming cells, among other things. A deficiency can cause hair to grow more slowly, become thinner and dull or even fall out.8
Nails also grow more slowly with a selenium deficiency, become brittle and can split or break quickly. Transverse or longitudinal grooves may also appear on the nails.8 Larger white patches often appear.5,9
Selenium supports muscles and protects cells
Selenium also has an effect on your muscles. After all, skeletal muscles contain up to 50 percent of the amount found in your entire body.10 Do you exercise frequently? Then selenium can help your muscles to recover better after exercise.11 A selenium deficiency, on the other hand, can lead to muscle diseases.5
Selenium has an antioxidant effect – just like our berry extracts12 – and can protect body cells from damage caused by so-called free radicals. This protective effect also affects sperm, i.e. male sperm cells. Men who are unable to conceive usually have very low selenium levels.13 They often also lack zinc.14 Taking these two trace elements can help to improve the quantity and motility of sperm cells.15
Selenium-poor soils as a cause of deficiencies
Selenium is found in both animal and plant foods. How much selenium is found in plant foods depends on the content of the soil. In Europe, soils are considered to be low in selenium. This means that plants grown in Germany, for example, contain comparatively little selenium.1,2
This is why people who eat a vegan diet in particular are at an increased risk of selenium deficiency. Unbalanced diets or inflammatory bowel diseases can also lead to an undersupply of this vital substance.5
rubyn Selenium can help you to cover your daily requirement from a natural source. Just one capsule provides you with the recommended daily dose.
What are the health benefits of selenium?
The trace element is essential for various vital functions16:
Selenium
- contributes to normal thyroid function
- contributes to the maintenance of normal hair
- contributes to the maintenance of normal nails
- contributes to the normal function of the immune system
- contributes to the protection of cells from oxidative stress
- contributes to normal sperm formation
References:
1) Netdoktor.de. Selenium. Status: 07.01.2025. Ed.: BurdaVerlag Publishing GmbH. https://www.netdoktor.de/laborwerte/selen/, last accessed on 26.05.2025
2) German Nutrition Society (DGE). Selected questions and answers on selenium. Status: 11.03.2024. https://www.dge.de/gesunde-ernaehrung/faq/selen/, last accessed on 26.05.2025
3) German Nutrition Society (DGE). Reference value: Selenium. Stand: 2015. https://www.dge.de/wissenschaft/referenzwerte/selen/, last accessed on 26.05.2025
4) AOK.de. Selenium – essential for the immune system. Status: 07.01.2021. https://www.aok.de/pk/magazin/ernaehrung/vitamine/selen-unverzichtbar-fuers-immunsystem/, last accessed on 26.05.2025
5) Netdoktor.de. Selenium deficiency. As at: 07.01.2025. Ed.: BurdaVerlag Publishing GmbH. https://www.netdoktor.de/laborwerte/selen/mangel/, last accessed on 26.05.2025
6) Regulation (EU) No 1169/2011 of the European Parliament and of the Council of 25 October 2011. https://eur-lex.europa.eu/legal-content/DE/TXT/PDF/?uri=CELEX:32011R1169&from=EN, last accessed on 20.05.2025
7) verbraucherzentrale.de. Organic food supplements. Status: 12.07.2024. https://www.verbraucherzentrale.de/wissen/lebensmittel/kennzeichnung-und-inhaltsstoffe/bionahrungsergaenzungsmittel-27105, last accessed on 05.06.2025
8) Deutsches Schilddrüsenzentrum. Underactive thyroid (hypothyroidism). https://www.deutsches-schilddruesenzentrum.de/wissenswertes/schilddruesenerkrankungen/schilddruesenunterfunktion, last accessed on 05.06.2025
9) Stuttgarter-Nachrichten.de. The real cause of white spots on fingernails. Status: 19.08.2021. https://www.stuttgarter-nachrichten.de/inhalt.weisse-flecken-fingernaegel-mhsd.d4663df1-a5a6-41d1-9800-258e3c59b5c3.html, last accessed on 05.06.2025
10) Federal Office of Consumer Protection and Food Safety. Joint Expert Commission on the Classification of Substances: Statement on the Classification of Products Containing Selenium (No. 02/2021). https://www.bfarm.de/SharedDocs/Downloads/DE/Arzneimittel/Zulassung/ZulRelThemen/abgrenzung/Expertenkommission/stellungnahmen/2021-02.pdf?__blob=publicationFile, last accessed on 26.05.2025
11) Thieme Natürlich. Importance of selenium for sport and muscle regeneration. Status: 04.03.2025. https://natuerlich.thieme.de/therapieverfahren/naehrstofftherapie/detail/bedeutung-von-selen-fuer-sport-und-muskelregeneration-4100, last accessed on 27.05.2025.
12) Huang WY et al. Survey of antioxidant capacity and phenolic composition of blueberry, blackberry, and strawberry in Nanjing. J Zhejiang Univ Sci B. 2012 Feb; 13(2): 94-102. https://pmc.ncbi.nlm.nih.gov/articles/PMC3274736/
13) Yang D et al. Selenium homeostasis and male reproduction. Biochem Biophys Res Commun. 2025 Jun 8: 765: 151879. https://www.sciencedirect.com/science/article/abs/pii/S0006291X25005935
14) VitaminDoctor.com. Micronutrients for men who want to have children. Status: 14.09.2023. https://www.vitamindoctor.com/gesund-bleiben/kinderwunsch/mann, last accessed on 05.06.2025
15) Kaltsas A. Oxidative Stress and Male Infertility: The Protective Role of Antioxidants. Medicina (Kaunas). 2023 Oct 4;59(10):1769. http://pmc.ncbi.nlm.nih.gov/articles/PMC10608597/
16) Commission Regulation (EU) No 432/2012 of 16 May 2012 establishing a list of permitted other 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 05.06.2025
Convinced by rubyni®
EXPERIENCES THAT BUILD TRUST
Tobias Angerer
Cross-country skier
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 elderberries - it's now part of my daily routine. I am convinced of the positive effects of elderberries on my immune system, my energy levels and my fitness, especially during regeneration after periods of exertion.
Andrea Sokol
Phytotherapist | Nutrition and health consultant
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 won me over as a brand. The capsules contain only extremely high-quality and natural ingredients whose effectiveness has been proven by studies and which provide the body with important nutrients. I have published several videos about my personal rubyni® journey on my YouTube channel Ohlala & Solala. There I tell you even more about what makes this dietary supplement so special from my point of view.
Hanna Kebinger
Biathlete
As a biathlete, I have to be fit and able to perform at the drop of a hat. I had big problems with that in the past. My body was repeatedly weakened and I had to put up with many setbacks. When I was looking for a solution to support my immune system in the long term, my naturopath introduced me to elderberries as a superfood, among other things. I now take rubyni® with elderberries every day. The capsules are also super handy when I'm on the World Cup circuit. Rubyni® is a valuable aid for me during stressful competition phases and my immune system is finally back on top form.
Prof. Dr. rer. nat. Michaela Döll




