21st Century D 5000 UI Comprimidos, 110 Unidades

What is vitamin D and why is it important?

Discover 21St Century 5000 — Vitamin D is an essential nutrient that plays a crucial role in the absorption of calcium and phosphorus, fundamental minerals for bone health. It also contributes to the normal functioning of the immune system and muscles. Because the main source of vitamin D is sun exposure, many people are deficient, especially in winter or in areas with little sunlight. A supplement like this can help maintain adequate levels.

Health benefits of vitamin D

According to the European Food Safety Authority (EFSA), vitamin D contributes to:

• Normal absorption and utilization of calcium and phosphorus.
• Maintenance of normal blood calcium levels.
• Maintenance of normal bones.
• Normal muscle function.
• Normal immune system function.

These benefits are backed by science and make vitamin D a key nutrient for overall well-being.

How much vitamin D do you need? Recommended dose

Each tablet provides 5000 IU of vitamin D, a high dose that may be suitable for people with increased needs or low sun exposure. Recommended daily intakes vary according to age, sex, and physiological situation (pregnancy, lactation). For adults, the reference daily intake is 200 IU, but many experts suggest higher doses to achieve optimal levels. However, the indicated dose should not be exceeded without consulting a healthcare professional.

Differences between vitamin D2 and D3

Vitamin D comes in two forms: D2 (ergocalciferol) of plant origin and D3 (cholecalciferol) of animal or lichen origin. D3 is the form that the body produces naturally with sunlight and is considered more effective in raising and maintaining blood levels. Many supplements use D3, but it is important to check the type on the product label.

How to choose the best vitamin D supplement

When choosing a vitamin D supplement, consider the dose (IU), the form (D2 or D3), the source (lanolin, fish, lichen), and certifications (vegan, non-GMO). This product offers 5000 IU per tablet, ideal for those seeking a high dose. It is also important that the product is from a reliable brand and complies with quality standards.

Possible side effects and contraindications

In high doses, vitamin D can cause toxicity if the tolerable upper limit (4000 IU/day for adults according to EFSA) is exceeded. Symptoms may include nausea, vomiting, weakness, or kidney problems. Consult a doctor before taking high doses, especially if you are pregnant, breastfeeding, or taking other medications. This product is a food supplement and should not be used as a substitute for a balanced diet.