Vitamin D

The sunshine vitamin

Vitamin D supplements to replenish often deficient levels, especially during months with less sunlight. Find options for D3 in capsules, drops, and liquid, some combined with vitamin K2.

Why it's important

Vitamin D contributes to the normal functioning of the immune system, the maintenance of normal bones and teeth, and calcium absorption. It is one of the most common deficiencies in the population.

How to choose

Drops and liquids allow for easy dose adjustment; capsules are practical for daily use. Formulas with K2 are sought after by those who want to support both bone and cardiovascular health.

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5 products

Thorne Vitamina D/K2 30ml Thorne - suplemento líquido para saúde óssea, imunidade e absorção eficaz de cálcio
Thorne Vitamina D/K2 30ml Thorne - suplemento líquido para saúde óssea, imunidade e absorção eficaz de cálcio
Thorne Research
Vitamin D/K2 30ml Thorne
38,00€
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Super D3 60 caps Allergy Research - Viva Saudável
Badges Informativos
Allergy Research
Super D3 60 caps allergy research
23,17€
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Vitamina D-1000 90 caps Thorne Research - Viva Saudável
Vitamina D-1000 90 caps Thorne Research - Viva Saudável
Thorne Research
Vitamin D-1000 90 caps Thorne
22,15€
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FAQs

The most recommended daily maintenance dose for healthy adults is between 1000 and 2000 IU (25-50 mcg). In cases of confirmed deficiency by analysis, higher doses may be temporarily prescribed. Ideally, 25(OH)D levels should be measured in the blood and the dose adjusted with your doctor to achieve values between 40 and 60 ng/mL.

Vitamin D3 increases intestinal calcium absorption, but without vitamin K2 (MK-7), this calcium can be deposited in the arteries instead of the bones. K2 activates osteocalcin (directs calcium to bones) and MGP (removes calcium from arteries). It is an essential synergistic combination for cardiovascular and bone health.

Yes, and surprisingly high for a country with so much sunshine. Portuguese studies show that more than 70% of the population has insufficient levels of vitamin D, especially in winter, among the elderly, people who work indoors, and those who use strict sun protection. Daily supplementation is widely recommended.

Food supplements are not a substitute for a varied and balanced diet or a healthy lifestyle. If you are pregnant or breastfeeding, consult your doctor before taking this supplement. Not recommended in case of hypersensitivity or allergy to any of the ingredients in the formulation, or when interactions between another product and any of its constituents are described. The recommended daily dose should not be exceeded. Keep out of the reach and sight of children. Store in a cool, dry place, away from light.