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In winter, many people struggle more with colds and flu. One of the reasons for this is that our immune system is often weakened in winter. There are many reasons for this, but one major factor is the reduced amount of sunlight. As a result, the body produces less vitamin D, which plays a key role in strengthening the immune system. Vitamin C is also particularly important at this time of year, as it also supports our immune system and protects us from colds and other infections. However, the combination of both vitamins C and D can be particularly effective and strengthen the immune system in the long term, especially during the cold season.
As vitamin C can neither be produced nor stored by the body itself, it must be taken in regularly through food. Vitamin-rich fruit and vegetables are particularly effective here. For an acute cold however, this is no longer sufficient, as the immune system is weakened and is therefore dependent on additional support. In this case, it is advisable to take vitamin C capsules, which can effectively strengthen the immune system.
Vitamin C capsules can of course also preventive preventive measures, because the vitamin not only helps to strengthen the defense against viruses and bacteria, but also to effectively protect the white blood cells. As vitamin C is water-soluble and excess amounts of the vitamin are excreted by the body, you - as an otherwise healthy person - do not need to worry about overdosing.
➤ A cold lasts nine days on average. However, if you take 5000 mg of vitamin C daily throughout the day, the duration can actually be reduced to less than five days.
If you take vitamin C, it is absorbed into the blood via free transport molecules in the small intestine. However, as soon as these molecules are occupied and no more vitamin C can be transported into the blood, the excess is excreted. The human body can therefore absorb and utilize vitamin C in different doses with varying degrees of effectiveness. In quantities of up to 500 mg, the vitamin is 100 % absorbed. However, the higher this one-off dose is, the the lower the absorption, i.e. the absorption via the body.
Research has shown that the concentration of vitamin C in our white blood cells drops sharply during an infection. Therefore, during a cold, you should spread the intake of vitamin C throughout the day and combine it with a meal. combined with a meal. This will ensure that your body always has sufficient vitamin C available, thereby significantly increasing the ability of your immune cells to fight off colds.
Vitamin D plays a very important role for every cell in the body, as it regulates around 1,000 different genes. However, if there is a vitamin D deficiency, the body can no longer carry out numerous metabolic processes and the person becomes ill.
In order for vitamin D to be produced by the body, the skin depends on UV radiation in order for the skin to produce vitamin D. So as soon as there is enough sunlight, up to 90 % of the vitamin D required is produced by the skin.
Especially in the vitamin D deficiency increases in the winter months increases, however, as the vitamin can only be formed at a sunlight angle of 45 degrees. For our latitudes, this means that this is only possible at the height of summer between 11 am and 3 pm. Despite this, many people suffer from a vitamin D deficiency even in summer, as long working hours, sunscreen and increasing age prevent sufficient vitamin D production through the skin.
Unfortunately, studies assume that more than 60 % to 80 % of the population suffer from an undersupply and many people don't even realize it. Although it is possible to obtain vitamin D from food, most foods only contain very small amounts. It is therefore highly recommended to take vitamin D capsules as a supplement in winter .
Studies clearly show that an vitamin D deficiency is one of the risk factors for a weakened immune system, for allergies and asthma and for autoimmune diseases. diseases. This particularly applies to respiratory diseases and asthma. For example, people with a vitamin D deficiency are one third more susceptible to respiratory infections .
Flu epidemics are known to occur more frequently in the winter months and are also due to the lower vitamin D levels in the body. As the sun is much weaker on the short winter days and, if at all, only sends its rays briefly through the mostly cloudy sky, the body can only produce insufficient amounts of vitamin D.However, vitamin D capsules can compensate for the vitamin deficiency and strengthen the immune system. Vitamin D has the wonderful ability to counteract an overactive immune system, as is the case with autoimmune diseases as well as to regulate a weakened immune defense upwards again.
Vitamin D3 capsules are generally considered to be very well tolerated. However, in order to avoid an overdose, you should stick to the prescribed dosage. In the event of an overdose, symptoms such as
Vitamin C capsules are water-soluble, so that any excess is excreted in the urine. An overdose is therefore almost impossible. However, people with damaged kidneys should be careful with the dose, however, as they have an increased risk of side effects in the event of an overdose.
Recommended intake Vitamin D capsules:
Recommended intake Vitamin C capsules:
Do not exceed the recommended daily intake.Not a substitute for a balanced and varied diet.Store in a cool, dry and dark place. Keep out of the reach of small children.
Vitamin C composition:
Ascorbic acid (vitamin C powder), hydroxypropyl methylcellulose (capsule shell)
Vitamin D3 composition:
Cholecalciferol (vitamin D3), cellulose, hydroxypropylmethylcellulose (capsule shell)
Quantities per capsule of vitamin C:
Quantities per capsule of vitamin D3:
glutenfrei
laktosefrei
ohnegelatin
Vitamin C and vitamin D are both nutrients that strengthen our immune system in the long term. Together, they form the perfect combination to keep us fit and healthy through the winter months.
Sources (in English);
Johnston, C. S., Barkyoumb, G. M. & Schumacher, S. S. (2014, July). Vitamin C supplementation slightly improves physical activity levels and reduces cold incidence in men with marginal vitamin C status: a randomized controlled trial. Nutrients, 6(7):2572-83, doi: 10.3390/nu6072572
Van Straten, M. & Josling, P. (2002, May-June). Preventing the common cold with a vitamin C supplement: a double-blind, placebo-controlled survey. Advances in Therapy, 19(3):151-9
Gorton, H. C. & Jarvis, K. (1999, October). The effectiveness of vitamin C in preventing and relieving the symptoms of virus-induced respiratory infections. Journal of Manipulative and Physiological Therapeutics, 22(8):530-3
Kalis, K. (2015, November). [Dual action of vitamin C versus degradation and supplementation]. Postepy Higieny I Medycyny Doswiadczalnej (Online), 69:1239-44
Uetaki, M., Tabata, S., Nakasuka, F., Soga, T. & Tomita, M. (2015, September). Metabolomic alterations in human cancer cells by vitamin C-induced oxidative stress. Scientific Reports, 5:13896, doi: 10.1038/srep13896
Benzie, I. F. & Choi, S. W. (2014). Antioxidants in food: content, measurement, significance, action, cautions, caveats, and research needs. Advances in Food and Nutrition Research, 71:1-53, doi: 10.1016/B978-0-12-800270-4.00001-8
Zhao, C. N., Li, Y., Meng, X., Li, S., Liu, Q., Tang, G. Y. et al. (2018, May). Insight into the Roles of Vitamins C and D against Cancer: Myth or Truth?. Cancer Letters, 29. pii: S0304-3835(18)30372-0, doi: 10.1016/j.canlet.2018.05.039
Holick, M. F. (2007). Optimal vitamin D status for the prevention and treatment of osteoporosis. Drugs & Aging, 24(12):1017-29
Holick, M. F. (2004, December). Sunlight and vitamin D for bone health and prevention of autoimmune diseases, cancers, and cardiovascular disease. The American Journal of Clinical Nutrition, 80(6 Suppl):1678S-88S, doi: 10.1093/ajcn/80.6.1678S
Holick, M. F. & Chen, T. C. (2008, April). Vitamin D deficiency: a worldwide problem with health consequences. The American Journal of Clinical Nutrition, 87(4):1080S-6S, doi: 10.1093/ajcn/87.4.1080S
Pohanka, M., Pejchal, J., Snopkova, S., Havlickova, K., Karasova, J. Z., Bostik, P. et al. (2012, January). Ascorbic acid: an old player with a broad impact on body physiology including oxidative stress suppression and immunomodulation: a review. Mini Reviews in Medicinal Chemistry, 12(1):35-43
Padayatty, S. J., Katz, A., Wang, Y., Eck, P., Kwon, O., Lee, J. H. et al. (2003, February). Vitamin C as an antioxidant: evaluation of its role in disease prevention. Journal of the American College of Nutrition, 22(1):18-35
Haines, S. T. & Park, S. K. (2012, April). Vitamin D supplementation: what's known, what to do, and what's needed. Pharmacotherapy, 32(4):354-82, doi: 10.1002/phar.1037
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Winter Fit Package - with vitamin C 1000mg and vitamin D 5000mg - highly dosed and 100% pure