Immunity & Vitality – Sleep, Nutrition, Vitamins and Lifestyle | Kingray
Immunity and vitality: comparing product ingredients
Compare selected products, from those containing the widest range of nutrients with authorised immune function claims to more narrowly focused supplements. Explore declared amounts, differences between forms and separate options for vitality.
How the products are ranked
The ranking is based on the number of declared vitamins and minerals with an authorised claim relating to the normal function of the immune system. In this comparison, these are vitamins A, C, D, B6 and B12, folate, zinc and selenium. We compare the selected products listed below, not the entire market.
Plant and mushroom extracts, omega-3, colostrum and excipients are not included in this count. We list them separately. Products with the same number of qualifying nutrients share a rank.
[8] ↑ Back to article contentsOverview: from the widest range of nutrients
| Rank and product | Nutrients counted |
|---|---|
| 1. Swedish Essentials | 8 nutrients: A, C, D, B6, B12, folate, zinc, selenium. |
| 2. KINGimmuno 2.0 | 4 nutrients: C, D, zinc, selenium. |
| 3. Rosita | 2 nutrients: A, D. |
| 4. KingManPro | 1 nutrient: vitamin C. |
| 4. KINGwoman Balance | 1 nutrient: vitamin B6. |
The counts are derived from the products’ declared composition. They describe the range of listed nutrients, not the results of a clinical comparison of effectiveness. BestVital has a different type of composition; KingRayLight is a device.
↑ Back to article contents1. Swedish Essentials: the widest range of nutrients

Swedish Essentials Multivitamins 500 ml
Within this selection, it contains the widest range of the vitamins and minerals included in our immune function comparison. The product table lists amounts per 15 ml.
A: 400 µg RE · C: 80 mg · D3: 10 µg · B6: 1.4 mg · folate: 200 µg · B12: 5 µg · zinc: 10 mg · selenium: 75 µg.
It also contains other vitamins, minerals and plant ingredients. A liquid form may suit people who have difficulty swallowing capsules. The form alone, however, does not demonstrate better absorption.
Before use, check the intended age group, directions and warnings on the current label.
[1]View product details (Slovak) →2. KINGimmuno 2.0: a complex in capsules

KINGimmuno 2.0 · 120 capsules
The daily serving for adults contains vitamin C 80 mg, D3 50 µg, zinc 10 mg and selenium 100 µg. Compared with the listed serving of Swedish Essentials, it declares higher amounts of vitamin D and selenium; the vitamin C and zinc amounts are the same.
The formula also includes vitamins E and K2, plant and mushroom extracts, NAC, coenzyme Q10 and PQQ. The acerola extract amount is 320 mg, while the declared vitamin C it provides is 80 mg.
Not intended for children or women who are pregnant or breastfeeding. Do not take on an empty stomach or on the same day as other products containing green tea. If you take medication or have a medical condition, seek advice before use and follow all product warnings.
[2]View ingredients and product →Comparing amounts: Swedish and KINGimmuno
| Nutrient | Swedish Essentials · 15 ml | KINGimmuno 2.0 · 2 capsules |
|---|---|---|
| Vitamin A | 400 µg RE | Not declared |
| Vitamin C | 80 mg | 80 mg |
| Vitamin D3 | 10 µg | 50 µg |
| Vitamin B6 | 1.4 mg | Not declared |
| Folate | 200 µg | Not declared |
| Vitamin B12 | 5 µg | Not declared |
| Zinc | 10 mg | 10 mg |
| Selenium | 75 µg | 100 µg |
“Not declared” means that the nutrient is not listed in the composition table used for this comparison. It is not laboratory confirmation of zero content. The amounts refer to the stated servings, not the whole pack.
↑ Back to article contents3. Rosita: oil with vitamins A and D

Rosita Extra Virgin · 150 ml
Cod liver oil contains vitamins A and D and omega-3 fatty acids. For a daily serving of 5 ml the product page lists EPA 443 mg and DHA 605 mg.
For this ranking, we count vitamins A and D. Omega-3 is not counted as an additional vitamin or mineral for immune function. Rosita has a different nutrient profile from a multivitamin complex.
The product is intended for adults and is derived from fish. Check the vitamin A and D amounts on the current label, especially when combining supplements. If you are pregnant, discuss whether cod liver oil is suitable with your doctor.
[3]View ingredients and product →4. KingManPro: vitamin C and other ingredients

KingManPro · 120 capsules
A serving of 2 capsules declares vitamin C 100 mg. The formula also includes vitamin E 30 mg, myo-inositol, plant and mushroom extracts, and nattokinase.
Vitamin C is counted in the immune function ranking. The presence of other extracts alone does not demonstrate that the product provides a wider range of nutrients for immune function than the complexes listed above.
Contains soya-derived ingredients. Not intended for children or women who are pregnant or breastfeeding. Consult a doctor if you take medication that affects blood clotting or have an autoimmune condition.
[4]View ingredients and product →4. KINGwoman Balance: vitamin B6 and women’s vitality

KINGwoman Balance · 120 capsules
A serving of 2 capsules contains vitamin B6 3 mg and magnesium 70 mg. The formula also includes plant extracts.
Vitamin B6 is counted in this ranking. Magnesium has other authorised function claims and does not increase the count of nutrients with an immune function claim. The product is aimed at women’s balance and vitality.
Not intended for children or women who are pregnant or breastfeeding. If you are receiving hormonal treatment, follow the product warnings and consult your doctor.
[5]View ingredients and product →BestVital: colostrum with a different composition
BestVital colostrum
Colostrum is an animal-derived product with a different composition from multivitamins. It cannot be placed in this ranking based only on its name or the presence of milk-derived components.
When choosing a product, check its origin, exact composition, declared amounts, directions and intended age group. Bovine colostrum is not suitable for people with a cow’s milk protein allergy.
See the BestVital range for current options and their details.
[6]View ingredients and product →KingRayLight: a device for your wellness routine

KingRayLight
KingRayLight is a device, so it cannot be compared by the number of vitamins or a daily nutrient serving. It has its own intended use and instructions.
This overview does not attribute infection prevention or treatment of immune disorders to the device. Follow the manufacturer’s intended use, limitations and safety instructions.
[7]View device details →How to choose and avoid unnecessary combinations
- Identify your needs. Complementing your diet with a broader range of nutrients, addressing a specific missing nutrient and choosing a preferred form are different reasons for selection.
- Compare the same substance in the stated serving. The weight of a whole extract is not necessarily the amount of the nutrient you are comparing.
- Add up overlapping nutrients from all products. Pay particular attention to vitamins A and D, zinc and selenium.
- Read the warnings. Medication, allergies, pregnancy and chronic conditions may affect your choice.
Frequently asked questions
Is Swedish Essentials automatically the most effective?
The ranking describes the range of selected declared nutrients. It is not a clinical comparison of effects and does not identify the best product for everyone.
Is a higher amount of vitamin D always an advantage?
The appropriate amount depends on your needs, other sources of vitamin D and your health. If you are unsure, discuss it with your doctor or pharmacist.
Can I use this table to choose a product for a child?
Several products listed here are intended for adults. A product for a child must be suitable for their age and used according to its directions and the advice of a paediatrician.
What if I still get ill while taking supplements?
See our separate guide to recurring illness. A supplement cannot explain the cause of persistent symptoms.
↑ Back to article contentsSources and further reading
- Swedish Essentials: declared composition per 15 ml (Slovak)
- KINGimmuno 2.0: declared composition per 2 capsules
- Rosita: declared composition and directions
- KingManPro: ingredients and warnings
- KINGwoman Balance: ingredients and warnings
- BestVital: current colostrum range
- KingRayLight: intended use and instructions
- EU: authorised health claims on foods
This information does not replace an individual medical assessment. Amounts are based on the products’ declared composition. Last updated: 19 September 2026.
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