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What is the recommended daily intake of Vitamin D3?

The recommended daily intake of vitamin D3 can vary depending on factors such as age, sex, overall health, and specific needs. The following are the general guidelines for daily vitamin D3 intake as recommended by authoritative health organizations:

Presented by Metulas Supplements:

  1. Infants (0-12 months): The American Academy of Paediatrics (AAP) recommends a daily intake of 400 International Units (IU) or10 micrograms(mcg) of vitamin D3 for infants, including those who are exclusively breastfed.

  2. Children (1-18 years): The recommended daily intake for children and adolescents is 600 IU or 15 mcg of vitamin D3. This recommendation is provided by various organizations, including the AAP and the Institute of Medicine (IOM).

  3. Adults (18-70 years): The recommended daily intake for most healthy adults is 600 IU or 15 mcg of vitamin D3. However, some organizations, such as the Endocrine Society, suggest that adults may require higher levels, particularly if they have limited sun exposure or other risk factors for vitamin D deficiency.

  4. Older Adults (70 years and older): The recommended daily intake for older adults is 800 IU or 20 mcg of vitamin D3. Aging can affect the body's ability to synthesize vitamin D from sunlight, making supplementation more important for maintaining adequate levels.

It's important to note that these recommendations are general and there is growing evidence that higher amounts of supplementation with D3 are safe and beneficial.

It's worth noting that individuals with certain health conditions or risk factors may require higher doses of vitamin D3. For example, people with osteoporosis, malabsorption issues, or limited sun exposure may need higher supplementation levels, as determined by their healthcare provider. Additionally, it's important to remember that vitamin D requirements can be influenced by factors such as geographic location, skin pigmentation, and seasonality. Consultation with a healthcare professional or registered dietitian is advised to determine the appropriate daily intake of vitamin D3 based on individual circumstances.

Whilst the recommended daily intake of vitamin D3 varies depending on individual needs, health status, and guidance from healthcare professionals, a higher amount(up to 4000iu) of vitamin D3 is generally considered safe for most adults, it is important to consult with a healthcare provider before starting high-dose supplementation.

The Endocrine Society's guidelines state that adults at risk of vitamin D deficiency may need higher doses, such as 1500-2000 IU per day. However, exceeding the recommended daily intake should be done under medical supervision, as excessive vitamin D supplementation can lead to hypervitaminosis D, a condition characterized by elevated levels of vitamin D in the body. This can result in symptoms such as nausea, vomiting, excessive thirst, constipation, weakness, and, in severe cases, kidney stones or kidney damage.

It is crucial to note that the optimal dose of vitamin D3 varies depending on factors such as age, overall health, sun exposure, and existing vitamin D levels. A healthcare provider can assess your individual needs and perform blood tests to determine the appropriate dosage for you.

Metulas Supplements is a British brand committed to delivering top-quality amino acid-based Food Supplement Drink Mixes. A family-owned business that prides itself on its dedication to scientific research and product quality. Every formulation offered has been created by a team of expert nutritionists and scientists and every line of production undergoes rigorous test and quality control procedures, ensuring every tub meets the highest standards of efficacy and safety; and most importantly the formulations do what they say they are going to do! All Metulas Supplements Food Supplement Drink Mixes are made in the UK - a country recognised for its world class manufacturing. The team are committed to customer satisfaction and customer support. If you have any questions relating to any information in these blogs or would like to know more about the products of Metulas Supplements or have any questions at all - head over to and drop us a line!



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