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Vitamins & Minerals

Vitamins & Minerals: The Smart Foundation of Your Daily Nutrition

Vitamins and minerals are micronutrients that, when consumed in appropriate amounts, help maintain immunity, metabolism, neuromuscular function, and bone health. Choose verified forms and dosages according to purpose—excess intake may not be safe. We rely on European reference values (EFSA) and overviews from professional institutions.

  • Fat-soluble vitamins: A, D, E, K – use judiciously (they are stored in the body).
  • Water-soluble vitamins: B-complex and C – excess is usually excreted.
  • Key minerals: calcium, magnesium, potassium, iodine, selenium, zinc – contribute to numerous bodily functions.

This text is for informational purposes and is not a substitute for medical care. Follow the label and the manufacturer’s recommendations.

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Redmond | Re-Lyte® Hydration Elektrolyty - Piňa Colada
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A delicious blend of electrolytes with a tropical pineapple and coconut flavour, free...

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Jigsaw Health | Směs minerálů - Essential Blend - 90 kapslí
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The Multi-Mineral Essential Blend is formulated to replenish vital minerals that are...

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ENERGYbits | ENERGYbits® Lisovaná spirulina v tabletách
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How to Choose Vitamins and Minerals (Practical Guide)

Most needs are covered by a varied diet; supplements make sense during periods of increased demand or with a restricted diet. Follow EFSA reference values and safe upper limits (UL); always dose according to the label.

What Belongs Here & Why

Vitamin D – bones, muscles, immunity

Vitamin D contributes to the maintenance of normal bones and muscle function and to the normal function of the immune system. Overdose typically results from excessive supplements; it does not occur from sunlight

Magnesium, potassium, calcium – nerves & muscles, electrolytes

These minerals contribute to the normal function of the nervous system and muscles and to the maintenance of electrolyte balance. Choose the form (capsules/drops/powder) and dose according to your goal and tolerance.

Iodine & selenium – thyroid, antioxidant protection

Iodine contributes to normal thyroid hormone production and thyroid function; selenium contributes to the protection of cells from oxidative stress and to normal immune function. Ensure adequate intake and do not exceed the UL. 

Zinc & vitamin C – immunity and cell protection

Zinc contributes to the normal function of the immune system; vitamin C contributes to the protection of cells from oxidative stress. Prefer verified forms and doses. 

How to Choose & Use

  • Start with your goal: skeleton (D, K2, Ca), nerves/muscles (Mg, K), immunity (D, C, zinc, selenium), thyroid (iodine). 
  • Stick to EFSA values: use DRV and safe upper limits (UL) as a guide. 
  • Form & dose: choose a well-tolerated form; monitor amount per serving and cumulative intake from multiple supplements. 
  • Safety: if you take medicines/have diagnoses, or during pregnancy/breastfeeding, consult a professional. 

Food supplements do not replace a varied diet and a healthy lifestyle.

FAQ

What are typical daily doses and the safe upper limit for vitamin D?

Follow EFSA (DRV) and UL; overdose does not occur from sunlight—risk stems from excessive supplements. 

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Does it make sense to take vitamin D together with vitamin K2?

They can be taken together; if on warfarin, keep your vitamin K intake stable and always consult any changes with your physician.

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Zinc: when and with what to take it? What is the long-term ceiling?

Take with food for tolerance; monitor total intake. ODS summarizes effects and safety, and Harvard/EFSA provide the commonly cited UL for adults.

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Magnesium: which form to choose and when during the day?

Organic forms (e.g., citrate, glycinate) tend to have good usability; take consistently, possibly with food. Follow label dosing. 

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Vitamin C: how much per day and what is the safe upper limit (UL)?

The UL for adults is 2,000 mg/day; higher intakes may cause digestive discomfort.

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Iodine: typical intakes and the upper limit?

EFSA uses an AI of ~150 µg/day for adults; the UL is 600 µg/day (do not exceed long-term). 

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Selenium: how much is “just right” and what is the ceiling?

Historically, a UL of 300 µg/day was cited; a newer EFSA opinion sets 255 µg/day (adults). Stick to reasonable doses. 

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I’m on warfarin—what about vitamin K and diet?

With warfarin, a consistent intake of vitamin K is essential; always discuss dietary or supplement changes with your physician.

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Authoritative Sources

  • EU Register of Nutrition & Health Claims – authorized wording of health claims. 
  • EFSA – DRV/UL summaries and technical reports for vitamins/minerals. 
  • NHS – vitamin D (note: you cannot overdose from sunlight). 
  • NIH ODS – expert fact sheets on individual micronutrients (zinc, vitamin C, etc.).