rubyni® Zinc
rubyni® Zinc from Guava Leaves—We Do It Naturally!
Dietary supplements containing zinc Made with organic guava leaf extract and vitamin C from organic acerola fruit powder. 100% vegan, gluten-free, and lactose-free; 100% organic.
Ingredients: Organic carrot powder, organic guava leaf extract (Psidium guajava 10:1, 4% zinc), organic acerola fruit powder (from Malpighia glabra, freeze-dried, 20% vitamin C). Coating agent: hydroxypropyl methylcellulose (plant-based capsule shell).
Two capsules contain 250 mg organic guava leaf extract and 98 mg acerola fruit powder. They provide 10 mg zinc (100% according to NRV*) and 20 mg vitamin C (25% according to NRV*).
*NRV = nutrient reference value (for adults according to the Food Information Regulation (LMIV))
Recommended intake: Take 2 capsules daily with sufficient water with a meal without chewing. Do not exceed the recommended daily intake.
60 capsules €59.90
Includes sales tax; shipping not included
rubyni® Zinc from a Natural Source
For our rubyni Zinc, we use organic guava leaf extract as a plant-based source of zinc. In the vegan capsules, the trace element is combined with plant-based ingredients. The product is supplemented with organic acerola fruit powder, a source of vitamin C.
Zinc plays a role in various processes in your body. For example, it helps maintain normal skin, hair, and nails. It also supports normal immune system function.1
- Zinc from Organic Guava Leaf Extract
- Two capsules provide 10 mg of zinc
- Combined with vitamin C from organic acerola fruit powder
- vegan, lactose- and gluten-free
- 100% organic
- No added preservatives
How much zinc does your body need?
The human body cannot store zinc in large quantities. Therefore, this trace element should be consumed regularly through the diet. Zinc is found in both animal-based foods—such as meat, eggs, and dairy products—and plant-based foods. These include, for example, legumes, whole grains, and nuts.2,3,4
However, there is one thing to keep in mind when eating a meal that includes legumes or grains: While these foods contain zinc, they also contain certain chemical compounds called phytates. These can bind to zinc in the digestive tract, thereby reducing the absorption of this trace element from food.4
The German Nutrition Society (DGE) recommends a daily zinc intake of 7–10 mg for women and 11–16 mg for men—depending, among other factors, on dietary phytate intake.3
The European Union (EU) specifies a uniform nutrient reference value (NRV) of 10 mg of zinc per day for both genders.5
Individual zinc requirements can vary depending on diet and lifestyle.
rubyni® Zinc – What’s in Our Capsules
Two rubyni Zinc capsules contain 250 mg of organic guava leaf extract and provide 10 mg of the essential trace element zinc. This corresponds to 100% of the daily value according to NRV*.
In addition, two rubyni Zinc capsules contain 98 mg of organic acerola fruit powder, which provides 20 mg of vitamin C—that’s 25% of the daily value according to the NRV*.
Note: Food supplements should not be used as a substitute for a balanced and varied diet or to replace a healthy lifestyle.
*NRV = nutrient reference value (for adults according to the Food Information Regulation (LMIV))
rubyni® Zinc at a Glance
rubyni Zinc is a dietary supplement containing zinc derived from an extract of the leaves of the guava (Psidium guajava), a small evergreen tree. We source the leaves from certified organic farms.
The process we use to extract the substance from the leaves is water-based and gentle. The zinc content is standardized to ensure consistent quality. In the capsules, the trace element is combined with plant-based ingredients.
We use the Brazilian acerola cherry (Malpighia glabra) as the source of the vitamin C in our capsules. It is one of the fruits with the highest vitamin C content in the world. Only the best fruits, which are gently freeze-dried, make it into our organic acerola fruit powder.
We have added organic carrot powder from Germany to rubyni Zinc. The powder is of raw, harvest-fresh quality.
Good to know:
Zinc—a trace element essential for numerous bodily functions
Zinc is a trace element, which means it is present in your body only in small amounts. Nevertheless, your body needs it for numerous and very diverse processes. An adequate supply is important for various tissues, for example: Zinc helps maintain normal skin, hair, and nails.1,6
You’ve probably heard that zinc contributes to the normal functioning of the immune system. But did you know that it also supports normal cognitive function? The term “cognition” encompasses various processes involved in information processing, such as perception and thinking. These processes can occur consciously or unconsciously.1,7
For metabolic processes and normal fertility
In addition, zinc is a component of many enzymes. This means that this trace element is involved in numerous metabolic processes. For example, zinc contributes to the normal metabolism of macronutrients—that is, the carbohydrates, fats, and proteins you consume in your diet.1,8
Last but not least, zinc contributes to normal fertility and reproduction in both men and women. In addition, this trace element plays a role in cell division, a fundamental process for numerous functions in your body.1
What role does zinc play in the body (Health Claims)?
The trace element zinc plays a role in various bodily functions:
Zinc
- contributes to normal cognitive function
- contributes to the maintenance of normal bones
- contributes to the maintenance of normal hair
- contributes to the maintenance of normal nails
- contributes to the maintenance of normal skin
- contributes to the maintenance of normal vision
- contributes to the normal function of the immune system
- contributes to the protection of cells from oxidative stress
- contributes to a normal acid-base metabolism
- contributes to a normal carbohydrate metabolism
- contributes to normal DNA synthesis
- contributes to normal fertility and normal reproduction
- contributes to the normal metabolism of macronutrients
- contributes to a normal fatty acid metabolism
- contributes to a normal vitamin A metabolism
- contributes to normal protein synthesis
- contributes to the maintenance of normal testosterone levels in the blood
- has a function in cell division
What makes rubyni zinc so special?
The zinc in our capsules is extracted from organic guava leaves using a gentle process. The guava leaf extract in the capsules is supplemented with organic acerola fruit powder, which contains vitamin C. We source our acerola cherries from Brazil—their powder is freeze-dried. rubyni Zinc also contains organic carrot powder grown in Germany.
How should I take Rubyni Zinc?
We recommend that adults take two rubyni Zinc capsules with plenty of water with a meal, without chewing them. However, they can be taken at any time of day, regardless of meals. Two capsules of rubyni Zinc provide 10 mg of zinc and 20 mg of vitamin C. Do not exceed the recommended daily intake.
Is Rubyni Zinc vegan, gluten-free, and lactose-free?
Yes, both the trace element and the vitamin C in rubyni Zinc come from vegan sources: We use organic guava leaves and acerola cherries as natural raw materials. This makes the product suitable as a dietary supplement for vegetarian and vegan diets. The capsules are also gluten-free and lactose-free.
What are the functions of zinc in the body?
Zinc plays a role in various bodily functions. For example, it helps maintain normal hair, skin, bones, and nails. Zinc also helps maintain normal vision, normal immune system function, and normal cognitive function. In addition, this trace element supports normal fertility and reproduction.1
References:
1) Commission Regulation (EU) No. 432/2012 of May 16, 2012, establishing a list of permitted health claims made on foods, other than those referring to the reduction of disease risk and to children’s development and health. As of August 20, 2025. https://eur-lex.europa.eu/legal-content/DE/TXT/?uri=CELEX%3A02012R0432-20250820, last accessed on June 3, 2026
2) gesund.bund.de. Zinc Deficiency. As of: December 6, 2021. Published by: Federal Ministry of Health (BMG) https://gesund.bund.de/zinkmangel, last accessed on June 3, 2026
3) German Nutrition Society (DGE). Reference Value: Zinc. As of 2019. https://www.dge.de/wissenschaft/referenzwerte/zink/, last accessed on June 3, 2026
4) German Nutrition Society (DGE). Selected Questions and Answers on Zinc. As of 2019. https://www.dge.de/gesunde-ernaehrung/faq/ausgewaehlte-fragen-und-antworten-zu-zink/, last accessed on June 3, 2026
5) 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 June 3, 2026
6) Institute for Quality and Efficiency in Health Care (IQWiG). Trace elements. https://www.gesundheitsinformation.de/glossar/spurenelemente.html, last accessed on June 3, 2026
7) DocCheck Flexikon. Cognition. As of May 17, 2024. https://flexikon.doccheck.com/de/Kognition, last accessed on June 3, 2026
8) DocCheck Flexikon. Zinc. As of April 21, 2026. https://flexikon.doccheck.com/de/Zink, last accessed June 3, 2026
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