{"product_id":"21st-century-vitamina-d3-5000-iu-comprimidos-b073syw235","title":"21st Century D3-5000 IU High Potency Tablets - 110 Tablets, 2-Pack","description":"\u003ch2\u003eWhat is Vitamin D and why is it important?\u003c\/h2\u003e\u003cp\u003eDiscover 21St Century D3-5000 — Vitamin D, also known as the \"sunshine vitamin,\" is an essential nutrient that the body produces when the skin is exposed to sunlight. However, in Spain, especially during the winter months, sun exposure is limited, making it difficult to reach optimal levels with sunlight alone. For this reason, vitamin D3 supplements become a key tool for maintaining optimal health.\u003c\/p\u003e\u003cp\u003eVitamin D plays a fundamental role in calcium absorption, making it a cornerstone for bone health. In addition, it contributes to the normal functioning of the immune system and helps maintain proper muscle function. 21st Century D3-5000 IU tablets offer a high dose of cholecalciferol (vitamin D3), the most bioavailable form and similar to what the human body produces, ideal for those who need an extra boost.\u003c\/p\u003e\u003ch2\u003eHealth benefits of vitamin D\u003c\/h2\u003e\u003cp\u003eThe European Food Safety Authority (EFSA) supports several benefits of vitamin D, always within a balanced diet and a healthy lifestyle. Below are the main recognized effects:\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCalcium and phosphorus absorption:\u003c\/strong\u003e Vitamin D contributes to the normal absorption and utilization of calcium and phosphorus, essential minerals for the formation and maintenance of bones and teeth.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMaintenance of normal bones:\u003c\/strong\u003e Helps maintain bones in normal conditions, reducing the risk of age-related bone weakness.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMuscle function:\u003c\/strong\u003e Contributes to the normal functioning of muscles, which promotes mobility and balance.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eImmune system:\u003c\/strong\u003e Vitamin D contributes to the normal functioning of the immune system, helping the body's defenses.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eBlood calcium levels:\u003c\/strong\u003e Contributes to the maintenance of normal blood calcium levels.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp\u003eEach 21st Century D3-5000 IU tablet provides a dose of 5000 IU, an amount designed for adults with high needs or low vitamin D levels.\u003c\/p\u003e\u003ch2\u003eHow much vitamin D do you need? Recommended dosage\u003c\/h2\u003e\u003cp\u003eDaily vitamin D requirements vary depending on age, sun exposure, and general health status. EFSA sets a reference intake of 2000 IU per day for adults, although many people may require higher doses if they are deficient. Supplements such as 21st Century D3-5000 IU offer a dose of 5000 IU per tablet, making it easy to reach recommended levels under professional supervision.\u003c\/p\u003e\u003cp\u003eIt is important not to exceed the tolerable upper limit (UL) established by EFSA at 4000 IU per day for adults, although higher doses may be indicated by a doctor in specific cases. Therefore, it is recommended to consult a healthcare professional before starting supplementation, especially with high doses.\u003c\/p\u003e\u003cp\u003eThis package contains 2 bottles with 110 tablets each, offering a total of 220 tablets. Taking one tablet a day, the package covers more than 7 months of supplementation.\u003c\/p\u003e\u003ch2\u003eDifferences between vitamin D2 and D3\u003c\/h2\u003e\u003cp\u003eThere are two main forms of vitamin D: D2 (ergocalciferol), of plant origin, and D3 (cholecalciferol), of animal origin. Vitamin D3 is the form that humans naturally produce after sun exposure, and various studies suggest that it is more effective at raising and maintaining blood vitamin D levels.\u003c\/p\u003e\u003cp\u003e21st Century D3-5000 IU uses cholecalciferol (vitamin D3) obtained from lanolin (sheep wool fat), which ensures high purity and bioavailability. For people on vegan diets, there are alternatives of vitamin D3 of lichen origin, but this product is not certified as vegan.\u003c\/p\u003e\u003ch2\u003eHow to choose the best vitamin D supplement\u003c\/h2\u003e\u003cp\u003eWhen selecting a vitamin D supplement, it is important to consider several factors:\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eForm:\u003c\/strong\u003e Vitamin D3 (cholecalciferol) is the most recommended due to its greater absorption.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eDosage:\u003c\/strong\u003e 5000 IU is a high dose, suitable for those with high needs or low levels. Always consult a professional.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003ePresentation:\u003c\/strong\u003e Tablets are convenient and easy to take. This package includes two bottles, ideal for saving and ensuring a long-term supply.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eQuality and trust:\u003c\/strong\u003e 21st Century is a recognized brand in the food supplement sector, with products manufactured under strict quality controls.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eValue for money:\u003c\/strong\u003e With 220 tablets in total, the cost per dose is very competitive.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp\u003eRemember that supplements should not replace a varied and balanced diet. Vitamin D is fat-soluble, so it is better absorbed if taken with a meal containing fats.\u003c\/p\u003e\u003ch2\u003ePossible side effects and contraindications\u003c\/h2\u003e\u003cp\u003eVitamin D is generally safe when consumed at recommended doses. However, excessive and prolonged doses can cause hypercalcemia (elevated calcium levels in the blood), which can manifest as nausea, weakness, or kidney problems. The tolerable upper limit for adults is 4000 IU per day, according to EFSA.\u003c\/p\u003e\u003cp\u003eThis product is indicated for adults. Its use is not recommended in children, pregnant women, or breastfeeding women without medical supervision. It is always advisable to consult a healthcare professional before starting any supplementation, especially if you are taking other medications or suffer from any disease.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThis product is a food supplement and should not be used as a substitute for a balanced diet.\u003c\/em\u003e\u003c\/p\u003e","brand":"21st Century","offers":[{"title":"Default Title","offer_id":48765201023130,"sku":null,"price":37.98,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/4831\/0170\/files\/71cQflMtsRL._AC_SL1500.jpg?v=1784500068","url":"https:\/\/vitaminaspain.es\/es\/products\/21st-century-vitamina-d3-5000-iu-comprimidos-b073syw235","provider":"vitaminaspain","version":"1.0","type":"link"}