Life Extension Vitamins D and K with Sea-Iodine for Thyroid, 60 Capsules

My doctor ran some standard blood tests back in January 2026 and told me my vitamin D levels were low. The blood tests confirmed what I had suspected because I felt like I had no energy, my sleep schedule was awful, my mood was off and I was suffering from migraines on a monthly basis(due to hormonal changes). I’ve done my research and homework on vitamins and supplements and I know for Vitamin D to be effective it should be paired with Vitamin K2 for maximum absorption. I found the Life Extension brand because it checked both boxes(vit D3 and K2). The addition of iodine was also a big plus for me because I had been considering adding an iodine supplement to my daily vitamin regimen. I love that the iodine is sourced from seaweed and not made in some lab. The capsules are small and easy to swallow. Every other vitamin D3 supplement I’ve taken in the past seems like it’s either a huge tablet or you have to take 3 capsules 3x/day. This brand is one small capsule, once a day. IMO the value for your money is excellent and worth every penny. I will continue to purchase the Life Extension brand vit D3 with K2 & iodine and have since recommended it to family and friends. All of this being said, my doctor retested my vitamin D levels a few weeks ago and I am happy to share that my levels went from 23 to 35!! My bloodwork is a confirmation that the Life Extension vitamin D3 has helped me improve vitamin D levels! 🙌🏼 💪🏼

Tiny powder capsules. Easy to swallow. No negative side effects. Great value.

I’ve been using life extension products for a few years and I’ve tried quite a few, and I truly like their products but the price on some are pricey. I would write them a high-quality product very pleased with everything with no side effects.

Excellent, will buy again

I’ve been using Life Extension Vitamins D and K with Sea-Iodine for a couple of months, and I’m very pleased with the results. The combination of vitamin D3, multiple forms of vitamin K, and iodine makes this supplement stand out, as it supports not only immune and bone health but also thyroid function and overall wellness. I appreciate that the capsules are small and easy to swallow, with no noticeable taste, which makes them convenient for daily use. Since starting this supplement, I’ve noticed improvements in my energy levels and a general sense of well-being, which I attribute to the balanced blend of nutrients. My vitamin D levels, which were previously low, have returned to normal, and my nails and hair also seem healthier. The inclusion of sea-iodine is a thoughtful touch, especially for those who don’t get enough iodine from their diet. Overall, this is a high-quality, non-GMO, and gluten-free product that delivers on its promise to support immune, bone, arterial, and thyroid health.

we've tried many different D3 supplements but always come back to this one. it's not perfect, for one thing you must be sure you have a good source of selenium in your diet because this does contain iodine. we were noticing thyroid symptoms after a few years on this, but taking it with 1-3 brazil nuts at breakfast is making a big difference in that regard. not sure we'll stick with this supplement longer term, but for now it seems to be better than most especially at this price point.

Excellent. Take it at night 30min before bed.

Taking vitamin k along with d it’s important so it’s nice to have an all in one product. This is a quality brand and the capsules are small which I love.

Nice product - I have had good results with it since I work night shifts continuously for six months. I was losing my hair due to insufficient vitamin D. I used this product, and it has not completely stopped my hair loss.

健康のために。 D3とK2が一緒だとよいときいてさがしていたので、ちょうどよいものを発見 粒が、小さめなので飲みやすいです

Great product

Nice to find vit D combined with K . Very easy to swallow.

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