A high-quality supplement delivering optimal doses of Vitamin D3 and iodine to promote bone health, boost immunity, and support thyroid function.
Buy now, pay later from £2.50/mo with
Key Benefits
Promotes optimal vitamin D levels.
Supports bone and immune health.
Helps maintain healthy iodine levels for proper thyroid function.
Vitamin D3 is a crucial fat-soluble vitamin that supports overall health. The body naturally produces it when exposed to sunlight. Vitamin D3 is essential for strong bones, as it helps the body absorb calcium. It also boosts the immune system, protecting against infections and diseases, and may improve mood and support a healthy inflammatory response. But some people may still not get enough vitamin D due to limited sun exposure or their diets- which makes supplementation essential.
Life Extension's Vitamin D3 with Sea-Iodine delivers 125 mcg (5,000 IU) of Vitamin D3 per serving, ensuring optimal levels for daily health needs. It also includes 1,000 mcg of iodine to complement the Vitamin D3, addressing potential iodine deficiencies in those with limited dietary intake. Iodine is vital for producing thyroid hormones, which regulate metabolism and energy use. Together, these nutrients work to promote whole-body health and wellbeing.
For over 40 years, Life Extension has been advancing nutritional science, driven by the belief that a healthier and longer life is within everyone's reach. Its diverse team of acclaimed doctors and practitioners specialising in preventative medicine, cutting-edge scientists, researchers, lab technicians, naturopaths, nutritionists, nurses, and wellness specialists are dedicated to helping individuals navigate their journey toward lifelong health, wellness, and vitality. Offering more than 400 vitamins and supplements across 40+ health categories, Life Extension empowers people to achieve their health goals with the best that science has to offer.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Vitamin D (as cholecalciferol), Iodine [from Sea-Iodine™ Complex Blend (organic kelp and bladderwrack extracts, potassium iodide)].
Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), maltodextrin, modified food starch, silica, stearic acid.
Non-GMO
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
UK standard delivery
Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.
For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.
Take one (1) capsule daily with food, or as recommended by a healthcare practitioner.
Caution:
Individuals consuming more than 50 mcg (2000 IU)/day of vitamin D (from diet and supplements) should periodically obtain a serum 25-hydroxy vitamin D measurement. Do not exceed 10000 IU per day unless recommended by your doctor. Vitamin D supplementation is not recommended for individuals with high blood calcium levels. If you have a thyroid condition or are taking antithyroid medications, do not use without consulting your healthcare practitioner.
Warnings:
KEEP OUT OF REACH OF CHILDREN.
DO NOT EXCEED RECOMMENDED DOSE.
Do not purchase if outer seal is broken or damaged.
When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Journal offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
100+ health markers.
Two annual at-home blood tests.
Personalised product recommendations.
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
Discover moreThe Discovery
Expert Validation
Community Testing