Life Extension Vitamin D3 with Sea-Iodine

Name: Life Extension Vitamin D3 with Sea-Iodine
Brand: Life Extension
SKU: 737870175865
Price: 14.27 GBP
Availability: InStock

Brands: Life Extension

£14.27

A daily dose of vitamin D and iodine, delivered in Life Extension's caps format.

Why people take it

Vitamin D contributes to the normal function of the immune system
Vitamin D contributes to the maintenance of normal bones and teeth
Vitamin D contributes to normal muscle function
Vitamin D contributes to normal absorption and utilisation of calcium and phosphorus
Iodine contributes to normal thyroid function
Iodine contributes to normal cognitive function
Iodine contributes to normal energy-yielding metabolism

How to use

Take as directed on the pack, ideally with food and at the same time each day.

Good to know

Format: caps
Caffeine free

A food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.

Quantity

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Categories : Caffeine-Free Supplements, Everyday Health Supplements, Life Extension, Vitamin D Supplements, Vitamins & Supplements

SKU: 737870175865

At a glance

£0.23

per daily dose

Strong

evidence for vitamin d3

Our honest take

Each capsule gives 125 µg (5,000 IU) of vitamin D3 plus 1,000 µg of iodine from kelp, bladderwrack and potassium iodide. Both figures are above the levels UK and EU experts set as safe for everyday long-term use: 100 µg a day for vitamin D and 600 µg a day for iodine. Most people need only 10 µg of vitamin D in autumn and winter and get enough iodine from milk, fish and eggs. We would not suggest this without medical advice; a plain 10 to 25 µg D3 is the sensible choice for most people.

You have been told by a doctor to take high-dose vitamin D and extra iodine, and are being monitored
You just want everyday vitamin D: a 10 to 25 µg D3 is safer and cheaper
You have a thyroid condition or take thyroid medicines: high iodine can affect thyroid function
You are pregnant or breastfeeding, or have high blood calcium, without your doctor's advice

The science

Vitamin D3· evidence: Strong

Vitamin D3 (cholecalciferol) is the form the skin makes from sunlight. In the UK there is not enough strong sunlight from about October to March, so many people have low levels over winter. Good-quality trials show supplements reliably raise blood levels and correct deficiency, and that matters for bone health in people who are low.

The NHS advises everyone to consider 10 µg (400 IU) a day in autumn and winter, and all year round for people who get little sun, cover their skin, have darker skin or live in care homes. For people who already have adequate levels, large trials have not shown that extra vitamin D prevents falls, fractures or other illness.

In short: a modest daily dose is sensible and cheap insurance for most UK adults in winter. Very high doses are not better and should only be taken on medical advice.

Authorised health claim
Vitamin D contributes to the normal function of the immune system. Vitamin D contributes to the maintenance of normal bones. Vitamin D contributes to the maintenance of normal muscle function. Vitamin D contributes to the maintenance of normal teeth. Vitamin D contributes to normal absorption/utilisation of calcium and phosphorus. (Applies where a daily dose gives at least 15% of the NRV, i.e. 0.75 µg.)

Typical dose: 10 µg (400 IU) a day is the NHS advice for adults and children over 1. Doses of 25 µg (1,000 IU) to 50 µg (2,000 IU) are common and safe for adults. Babies under 1 need 8.5 to 10 µg a day unless they have more than 500 ml of formula.

Safety: Do not take more than 100 µg (4,000 IU) a day without medical advice (FSA/NHS); children aged 1 to 10 should not have more than 50 µg, and babies under 1 no more than 25 µg. Long-term very high intake can raise blood calcium, which can damage the kidneys and heart. People with kidney disease, sarcoidosis or high calcium levels should speak to their GP first.

Research we looked at:
NHS. Vitamin D. nhs.uk/conditions/vitamins-and-minerals/vitamin-d
Scientific Advisory Committee on Nutrition (SACN). Vitamin D and Health. 2016.
EFSA NDA Panel. Scientific opinion on the tolerable upper intake level for vitamin D. EFSA Journal 2023;21(8):8145.
Bolland MJ, Grey A, Avenell A. Effects of vitamin D supplementation on musculoskeletal health: a systematic review, meta-analysis, and trial sequential analysis. Lancet Diabetes Endocrinol 2018;6(11):847-858.

Iodine· evidence: Moderate

Iodine is needed to make thyroid hormones. Adults need about 140 µg a day in the UK, mainly from milk, dairy, eggs and white fish. Salt in the UK is rarely iodised, so people who avoid dairy and fish, including many vegans, can fall short. Getting enough matters most before and during pregnancy and breastfeeding.

A modest supplement (around 100 to 150 µg) is a sensible way to cover intake for people with low-iodine diets. There is no benefit to taking large amounts, and both too little and too much can upset thyroid function.

Seaweed and kelp products vary widely in iodine content, and some give far more than is needed.

Authorised health claim
Iodine contributes to the normal production of thyroid hormones and normal thyroid function. Iodine contributes to normal cognitive function. Iodine contributes to normal energy-yielding metabolism. Iodine contributes to the maintenance of normal skin. (Applies where a daily dose gives at least 15% of the NRV, i.e. 22.5 µg.)

Typical dose: Adults need about 140 µg a day from all sources (NRV on labels: 150 µg). Supplements usually give 75 to 150 µg.

Safety: The NHS advises that 0.5 mg (500 µg) a day or less from supplements is unlikely to cause harm; EFSA's adult upper level from all sources is 600 µg a day. Higher intakes can disturb thyroid function. Anyone with a thyroid condition, or taking thyroid medicine, should speak to their GP before taking iodine.

Research we looked at:
NHS. Others: vitamins and minerals (iodine). nhs.uk/conditions/vitamins-and-minerals/others
British Dietetic Association. Iodine: food fact sheet. bda.uk.com
EFSA NDA Panel. Scientific opinion on dietary reference values for iodine. EFSA Journal 2014;12(5):3660.

Ingredients & nutrition

Per daily dose (1 capsule): vitamin D3 (cholecalciferol) 125 µg / 5,000 IU (2,500% NRV); iodine 1,000 µg (667% NRV) from Sea-Iodine complex (organic kelp and bladderwrack extracts, potassium iodide). 60 capsules, 60 daily doses.

Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), maltodextrin, modified food starch, silica, stearic acid.

Always check the pack you receive, as manufacturers sometimes update recipes.

How to use

Label directions: 1 capsule a day with food. Do not exceed the stated daily dose. Both vitamin D and iodine in this product are above UK guidance levels for long-term use, so only take it on medical advice. Not for people with thyroid conditions or high blood calcium unless their doctor agrees.

Price per dose & how it compares

Product	Size	Price	Per daily dose
This product	60 caps	£14.27	£0.23
Applied Nutrition Vitamin D3		from £9.89	–
Apollo's Hegemony Vitamin D3 2000IU		from £8.39	–
Nordic Naturals Plant-Based Vitamin D3 Liquid		from £23.77	£0.40

Cost per daily dose lets you compare packs of different sizes fairly.Worked out from our current prices.

Food supplements should not replace a varied, balanced diet and healthy lifestyle. General information, not medical advice. Speak to your GP or pharmacist first if you are pregnant or breastfeeding, have a medical condition or take medication.