Life Extension - Vitamins D and K with Sea-Iodine - 60 Capsules
An avalanche of favorable studies has resulted in record numbers of Americans supplementing with vitamin D. Since it is virtually impossible to obtain adequate vitamin D from food sources, supplementation with 5,000-8,000 IU daily is required by many aging individuals. Overlooked by almost everyone (except Life Extension members) is the critical importance of vitamin K. If one is concerned enough about their health to take higher dose vitamin D, it seems absurd to miss out on the benefits of vitamin K. For instance, vitamin D facilitates calcium absorption into the bloodstream and thus plays an important role in maintaining bone density. Less recognized is the need for vitamin K to transport calcium from the bloodstream into the bone. Vitamin K is also required by calcium-regulating proteins in the arteries. Together these two vitamins help maintain youthful calcium skeletal distribution while promoting vascular health. Vitamin K can be found in small amounts in the diet, but obtaining the desired higher potencies requires supplementation. Many Life Extension members obtain optimal potencies of long-acting vitamin K in the Super Booster or Super K formulations. An increasing number of new members, however, are asking for high-potency vitamin D—but are not taking any supplemental vitamin K. To directly address this problem, Life Extension has put together a formula called Vitamins D and K with Sea-Iodine. Like vitamins D and K, few Americans obtain optimal amounts of iodine. As people seek to limit their salt intake, this deficit is exacerbated since iodized salt is the principal source of this mineral in many diets. Sea-Iodine is included in this formula to provide iodine without the harmful effects of sodium.
An avalanche of favorable studies has resulted in record numbers of Americans supplementing with vitamin D. Since it is virtually impossible to obtain adequate vitamin D from food sources, supplementation with 5,000-8,000 IU daily is required by many aging individuals. Overlooked by almost everyone (except Life Extension members) is the critical importance of vitamin K. If one is concerned enough about their health to take higher dose vitamin D, it seems absurd to miss out on the benefits of vitamin K. For instance, vitamin D facilitates calcium absorption into the bloodstream and thus plays an important role in maintaining bone density. Less recognized is the need for vitamin K to transport calcium from the bloodstream into the bone. Vitamin K is also required by calcium-regulating proteins in the arteries. Together these two vitamins help maintain youthful calcium skeletal distribution while promoting vascular health. Vitamin K can be found in small amounts in the diet, but obtaining the desired higher potencies requires supplementation. Many Life Extension members obtain optimal potencies of long-acting vitamin K in the Super Booster or Super K formulations. An increasing number of new members, however, are asking for high-potency vitamin D—but are not taking any supplemental vitamin K. To directly address this problem, Life Extension has put together a formula called Vitamins D and K with Sea-Iodine. Like vitamins D and K, few Americans obtain optimal amounts of iodine. As people seek to limit their salt intake, this deficit is exacerbated since iodized salt is the principal source of this mineral in many diets. Sea-Iodine is included in this formula to provide iodine without the harmful effects of sodium.
An avalanche of favorable studies has resulted in record numbers of Americans supplementing with vitamin D. Since it is virtually impossible to obtain adequate vitamin D from food sources, supplementation with 5,000-8,000 IU daily is required by many aging individuals. Overlooked by almost everyone (except Life Extension members) is the critical importance of vitamin K. If one is concerned enough about their health to take higher dose vitamin D, it seems absurd to miss out on the benefits of vitamin K. For instance, vitamin D facilitates calcium absorption into the bloodstream and thus plays an important role in maintaining bone density. Less recognized is the need for vitamin K to transport calcium from the bloodstream into the bone. Vitamin K is also required by calcium-regulating proteins in the arteries. Together these two vitamins help maintain youthful calcium skeletal distribution while promoting vascular health. Vitamin K can be found in small amounts in the diet, but obtaining the desired higher potencies requires supplementation. Many Life Extension members obtain optimal potencies of long-acting vitamin K in the Super Booster or Super K formulations. An increasing number of new members, however, are asking for high-potency vitamin D—but are not taking any supplemental vitamin K. To directly address this problem, Life Extension has put together a formula called Vitamins D and K with Sea-Iodine. Like vitamins D and K, few Americans obtain optimal amounts of iodine. As people seek to limit their salt intake, this deficit is exacerbated since iodized salt is the principal source of this mineral in many diets. Sea-Iodine is included in this formula to provide iodine without the harmful effects of sodium.
An avalanche of favorable studies has resulted in record numbers of Americans supplementing with vitamin D. Since it is virtually impossible to obtain adequate vitamin D from food sources, supplementation with 5,000-8,000 IU daily is required by many aging individuals. Overlooked by almost everyone (except Life Extension members) is the critical importance of vitamin K. If one is concerned enough about their health to take higher dose vitamin D, it seems absurd to miss out on the benefits of vitamin K. For instance, vitamin D facilitates calcium absorption into the bloodstream and thus plays an important role in maintaining bone density. Less recognized is the need for vitamin K to transport calcium from the bloodstream into the bone. Vitamin K is also required by calcium-regulating proteins in the arteries. Together these two vitamins help maintain youthful calcium skeletal distribution while promoting vascular health. Vitamin K can be found in small amounts in the diet, but obtaining the desired higher potencies requires supplementation. Many Life Extension members obtain optimal potencies of long-acting vitamin K in the Super Booster or Super K formulations. An increasing number of new members, however, are asking for high-potency vitamin D—but are not taking any supplemental vitamin K. To directly address this problem, Life Extension has put together a formula called Vitamins D and K with Sea-Iodine. Like vitamins D and K, few Americans obtain optimal amounts of iodine. As people seek to limit their salt intake, this deficit is exacerbated since iodized salt is the principal source of this mineral in many diets. Sea-Iodine is included in this formula to provide iodine without the harmful effects of sodium.
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The lowest price for Life Extension - Vitamins D and K with Sea-Iodine - 60 Capsules right now is $26.93 at Professional Supplement Center, compared across 18 retailers.
The all-time low was $18.25 on 5 May 2026 — today's price is 48% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 9 June 2026.
Last updated at 09/06/2026 03:54:29
Life Extension Vitamins D and K with Sea-Iodine, 90 Caps (Pack of 2)
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Vitamins D & K with Sea-Iodine, 60 Capsules, by Life Extension
Delivery $12.76
Life Extension, 含碘维生素 D + K 胶囊,60 粒
Delivery $40
Life Extension Vitamins D and K with Sea-Iodine, 60 Capsules, Support Bone & Brain
Delivery between 13–18 June $21.26
Vitamins D and K with Sea-Iodine
Delivery $85.09
Life Extensions Vitamins D and K with Sea Iodine
Delivery $35.10
Vitamins D & K
Life Extension, Vitamin D3 and K2, & Iodine, 60 capsules, (Natural Vitamin D3: Cholecalciferol, K2: MK-4 & MK-7), Cholecalciferol, Menaquinone-7,
Free delivery between 17–23 June
Life Extension, Vitamin D3 and K2, & Iodine, 60 capsules, (Natural Vitamin D3: Cholecalciferol, K2: MK-4 & MK-7), Cholecalciferol, Menaquinone-7,
Delivery between 15–18 June $29
Vitamins D and K with Sea-Iodine, 90 Caps (Pack of 2)
Delivery between 15–18 June $29
originally posted on iherb.com
I recently started using Life Extension's Vitamins D and K with Sea-Iodine, and it's been a fantastic addition to my daily health regimen. This supplement's unique combination of vitamin D, vitamin K, and iodine is particularly impressive. I initially got it to address some bone and mobility issues in my hip and knee, and I've noticed a real improvement. The iodine component is a great bonus, as it's essential for energy levels and brain health.What I appreciate most about this supplement is how it supports not only bone and immune health through vitamins D and K but also provides the much-needed iodine for thyroid health. Since incorporating it into my daily routine, I've felt an increase in my energy levels and an overall sense of wellness. The capsules are easy ... MoreI recently started using Life Extension's Vitamins D and K with Sea-Iodine, and it's been a fantastic addition to my daily health regimen. This supplement's unique combination of vitamin D, vitamin K, and iodine is particularly impressive. I initially got it to address some bone and mobility issues in my hip and knee, and I've noticed a real improvement. The iodine component is a great bonus, as it's essential for energy levels and brain health.What I appreciate most about this supplement is how it supports not only bone and immune health through vitamins D and K but also provides the much-needed iodine for thyroid health. Since incorporating it into my daily routine, I've felt an increase in my energy levels and an overall sense of wellness. The capsules are easy to swallow without any unpleasant aftertaste, making them very convenient to take.In summary, Life Extension's Vitamins D and K with Sea-Iodine is an excellent choice for anyone looking for a comprehensive supplement. It covers essential nutrients and contributes significantly to holistic health, which is exactly what I was looking for.
originally posted on iherb.com
First off, I have to say that I am thoroughly impressed with this product. As someone who is always looking for high-quality supplements to support my health, I can confidently say that this is one of the best Vitamin D and K supplements out there.What sets this product apart is the addition of Sea-Iodine, which is a rare and highly beneficial mineral that is often lacking in our modern diets. Iodine plays a critical role in supporting thyroid function, and by including it in this supplement, Life Extension has created a product that provides a wide range of health benefits.In addition to the Sea-Iodine, the combination of Vitamin D and K is an excellent choice for those looking to support their bone health. These two vitamins work together to help maintain ... MoreFirst off, I have to say that I am thoroughly impressed with this product. As someone who is always looking for high-quality supplements to support my health, I can confidently say that this is one of the best Vitamin D and K supplements out there.What sets this product apart is the addition of Sea-Iodine, which is a rare and highly beneficial mineral that is often lacking in our modern diets. Iodine plays a critical role in supporting thyroid function, and by including it in this supplement, Life Extension has created a product that provides a wide range of health benefits.In addition to the Sea-Iodine, the combination of Vitamin D and K is an excellent choice for those looking to support their bone health. These two vitamins work together to help maintain strong bones and support calcium absorption, which is critical for overall health.The capsules are also small and easy to swallow, which is a big plus for those who have trouble taking larger pills. Overall, I have noticed a significant improvement in my overall health and well-being since starting to take this supplement. I feel more energized, and I have noticed a positive impact on my bone health as well.In conclusion, I highly recommend Life Extension's Vitamins D and K with Sea-Iodine, 60 Capsules to anyone looking for a high-quality supplement to support their overall health. It is an excellent choice for anyone looking to improve their bone health, support their thyroid function, and maintain a healthy immune system. This is a top-quality product that I trust and will continue to use for years to come.
originally posted on iherb.com
First, please like my review. That motivates me to write my reviews with added effort. Thank you. My honest review? Let's start with the quality. This is a very high-quality Vitamin D supplement. It works and it does what it's supposed to do. In short, you can get Vitamin D from the sun by exposing yourself to the sun rays for like 10 minutes a day. To those of us who prefer to stay in, a Vitamin D is very, very essential. It's beneficial to your immune system, and deficiency is common even amongst people who are exposed to the sun. Shall we get back to reviewing this product? The size is perfect, not too big. The dosage is perfect to attain and maintain balanced Vitamin D levels. The package is also beautiful which is nice. I like this brand. From what I know, ... MoreFirst, please like my review. That motivates me to write my reviews with added effort. Thank you. My honest review? Let's start with the quality. This is a very high-quality Vitamin D supplement. It works and it does what it's supposed to do. In short, you can get Vitamin D from the sun by exposing yourself to the sun rays for like 10 minutes a day. To those of us who prefer to stay in, a Vitamin D is very, very essential. It's beneficial to your immune system, and deficiency is common even amongst people who are exposed to the sun. Shall we get back to reviewing this product? The size is perfect, not too big. The dosage is perfect to attain and maintain balanced Vitamin D levels. The package is also beautiful which is nice. I like this brand. From what I know, Vitamin K helps the body absorb Vitamin D and the effect is quite immediate. But because this review is honest, I have to say that Maltodextrin is something I don't want to see in any product. I don't particularly appreciate that this product has it, and it seems like other products of Life Extensions have this ingredient. I genuinely love this *high-quality* product but don't like Maltodextrin as an ingredient inside it. All in all, I give this product 9/10 for the Sea-Iodine and science behind it, and also because it's one of the best in the market. As always, test your blood and ask your doctor before buying supplements.
| Size/Form | 60 Capsule |
| Servings | 60 |
| Dosage | 1 Capsule(s) |
Life Extension Vitamins D and K with Sea-Iodine, 90 Caps (Pack of 2)
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Vitamins D & K with Sea-Iodine, 60 Capsules, by Life Extension
Delivery $12.76
Life Extension, 含碘维生素 D + K 胶囊,60 粒
Delivery $40
Life Extension Vitamins D and K with Sea-Iodine, 60 Capsules, Support Bone & Brain
Delivery between 13–18 June $21.26
Vitamins D and K with Sea-Iodine
Delivery $85.09
I recently started using Life Extension's Vitamins D and K with Sea-Iodine, and it's been a fantastic addition to my daily health regimen. This supplement's unique combination of vitamin D, vitamin K, and iodine is particularly impressive. I initially got it to address some bone and mobility issues in my hip and knee, and I've noticed a real improvement. The iodine component is a great bonus, as it's essential for energy levels and brain health.What I appreciate most about this supplement is how it supports not only bone and immune health through vitamins D and K but also provides the much-needed iodine for thyroid health. Since incorporating it into my daily routine, I've felt an increase in my energy levels and an overall sense of wellness. The capsules are easy ... MoreI recently started using Life Extension's Vitamins D and K with Sea-Iodine, and it's been a fantastic addition to my daily health regimen. This supplement's unique combination of vitamin D, vitamin K, and iodine is particularly impressive. I initially got it to address some bone and mobility issues in my hip and knee, and I've noticed a real improvement. The iodine component is a great bonus, as it's essential for energy levels and brain health.What I appreciate most about this supplement is how it supports not only bone and immune health through vitamins D and K but also provides the much-needed iodine for thyroid health. Since incorporating it into my daily routine, I've felt an increase in my energy levels and an overall sense of wellness. The capsules are easy to swallow without any unpleasant aftertaste, making them very convenient to take.In summary, Life Extension's Vitamins D and K with Sea-Iodine is an excellent choice for anyone looking for a comprehensive supplement. It covers essential nutrients and contributes significantly to holistic health, which is exactly what I was looking for.
First off, I have to say that I am thoroughly impressed with this product. As someone who is always looking for high-quality supplements to support my health, I can confidently say that this is one of the best Vitamin D and K supplements out there.What sets this product apart is the addition of Sea-Iodine, which is a rare and highly beneficial mineral that is often lacking in our modern diets. Iodine plays a critical role in supporting thyroid function, and by including it in this supplement, Life Extension has created a product that provides a wide range of health benefits.In addition to the Sea-Iodine, the combination of Vitamin D and K is an excellent choice for those looking to support their bone health. These two vitamins work together to help maintain ... MoreFirst off, I have to say that I am thoroughly impressed with this product. As someone who is always looking for high-quality supplements to support my health, I can confidently say that this is one of the best Vitamin D and K supplements out there.What sets this product apart is the addition of Sea-Iodine, which is a rare and highly beneficial mineral that is often lacking in our modern diets. Iodine plays a critical role in supporting thyroid function, and by including it in this supplement, Life Extension has created a product that provides a wide range of health benefits.In addition to the Sea-Iodine, the combination of Vitamin D and K is an excellent choice for those looking to support their bone health. These two vitamins work together to help maintain strong bones and support calcium absorption, which is critical for overall health.The capsules are also small and easy to swallow, which is a big plus for those who have trouble taking larger pills. Overall, I have noticed a significant improvement in my overall health and well-being since starting to take this supplement. I feel more energized, and I have noticed a positive impact on my bone health as well.In conclusion, I highly recommend Life Extension's Vitamins D and K with Sea-Iodine, 60 Capsules to anyone looking for a high-quality supplement to support their overall health. It is an excellent choice for anyone looking to improve their bone health, support their thyroid function, and maintain a healthy immune system. This is a top-quality product that I trust and will continue to use for years to come.
First, please like my review. That motivates me to write my reviews with added effort. Thank you. My honest review? Let's start with the quality. This is a very high-quality Vitamin D supplement. It works and it does what it's supposed to do. In short, you can get Vitamin D from the sun by exposing yourself to the sun rays for like 10 minutes a day. To those of us who prefer to stay in, a Vitamin D is very, very essential. It's beneficial to your immune system, and deficiency is common even amongst people who are exposed to the sun. Shall we get back to reviewing this product? The size is perfect, not too big. The dosage is perfect to attain and maintain balanced Vitamin D levels. The package is also beautiful which is nice. I like this brand. From what I know, ... MoreFirst, please like my review. That motivates me to write my reviews with added effort. Thank you. My honest review? Let's start with the quality. This is a very high-quality Vitamin D supplement. It works and it does what it's supposed to do. In short, you can get Vitamin D from the sun by exposing yourself to the sun rays for like 10 minutes a day. To those of us who prefer to stay in, a Vitamin D is very, very essential. It's beneficial to your immune system, and deficiency is common even amongst people who are exposed to the sun. Shall we get back to reviewing this product? The size is perfect, not too big. The dosage is perfect to attain and maintain balanced Vitamin D levels. The package is also beautiful which is nice. I like this brand. From what I know, Vitamin K helps the body absorb Vitamin D and the effect is quite immediate. But because this review is honest, I have to say that Maltodextrin is something I don't want to see in any product. I don't particularly appreciate that this product has it, and it seems like other products of Life Extensions have this ingredient. I genuinely love this *high-quality* product but don't like Maltodextrin as an ingredient inside it. All in all, I give this product 9/10 for the Sea-Iodine and science behind it, and also because it's one of the best in the market. As always, test your blood and ask your doctor before buying supplements.
I suffer from a very serious autoimmune disorder. This supplement provides a much higher dose of Vitamin D3 than other supplements (5000 IU vs. 1000 IU). I checked this out with my Neurologist, and he gave me the green light. The results have been sensational. I have more energy and stamina. My muscle strength has improved as well. My breathing is also better. Thank you Life Extension for developing this great supplement!
I've been using Life Extension's Vitamins D and K with Sea-Iodine for a while now, and I'm really happy with the results. This supplement combines three essential nutrients in one convenient capsule.First, the vitamin D helps support my bone health and immune system. I appreciate that it contains vitamin K2 as well, which works in synergy with vitamin D to ensure that calcium is properly directed to my bones and teeth, rather than building up in arteries.The addition of sea-iodine is a unique feature that sets this supplement apart. Iodine is crucial for thyroid health, and the sea-iodine sourced from organic sea algae is a more natural and bioavailable form.I find the capsule size manageable, and I haven't experienced any digestive issues or aftertaste, which ... MoreI've been using Life Extension's Vitamins D and K with Sea-Iodine for a while now, and I'm really happy with the results. This supplement combines three essential nutrients in one convenient capsule.First, the vitamin D helps support my bone health and immune system. I appreciate that it contains vitamin K2 as well, which works in synergy with vitamin D to ensure that calcium is properly directed to my bones and teeth, rather than building up in arteries.The addition of sea-iodine is a unique feature that sets this supplement apart. Iodine is crucial for thyroid health, and the sea-iodine sourced from organic sea algae is a more natural and bioavailable form.I find the capsule size manageable, and I haven't experienced any digestive issues or aftertaste, which can be common with some supplements. It's reassuring to know that I'm getting these important nutrients in a single, high-quality product from a reputable brand like Life Extension.Overall, I highly recommend Life Extension's Vitamins D and K with Sea-Iodine to anyone looking for comprehensive support for bone, immune, and thyroid health. It's become a staple in my daily supplement regimen.
Vitamin D plays a crucial role in bone health, immune function, and overall well-being, while vitamin K supports proper calcium absorption and utilization, as well as cardiovascular health. Together, they work synergistically to provide comprehensive support for the body. The addition of sea-iodine in this supplement is notable. Iodine is essential for proper thyroid function and metabolism, and the inclusion of sea-iodine ensures a natural and bioavailable source. This combination enhances the overall effectiveness of the supplement.
I appreciate the quality and purity of the ingredients in this complex. It's evident that the makers prioritize sourcing the best possible components. Knowing that I'm getting a blend of essential vitamins and minerals that are both potent and responsibly sourced gives me peace of mind.The easy-to-swallow capsules are a breeze to incorporate into my daily regimen. No unpleasant aftertaste or digestive discomfort. Plus, the fact that it combines these three crucial components into one supplement simplifies my routine and eliminates the need for multiple bottles.Over time, I've witnessed a positive impact on my skin health, immune system, and overall resilience. The combination of Vitamin D, K, and sea iodine seems to have contributed to a more balanced and ... MoreI appreciate the quality and purity of the ingredients in this complex. It's evident that the makers prioritize sourcing the best possible components. Knowing that I'm getting a blend of essential vitamins and minerals that are both potent and responsibly sourced gives me peace of mind.The easy-to-swallow capsules are a breeze to incorporate into my daily regimen. No unpleasant aftertaste or digestive discomfort. Plus, the fact that it combines these three crucial components into one supplement simplifies my routine and eliminates the need for multiple bottles.Over time, I've witnessed a positive impact on my skin health, immune system, and overall resilience. The combination of Vitamin D, K, and sea iodine seems to have contributed to a more balanced and vibrant version of myself.
Both vitamin D and vitamin K are essential nutrients necessary for a healthy lifestyle. High quality. The properties of vitamins D3 and K2 And vitamin D3 and vitamin K2 play an important role in the body and are generally important for health. Vitamin D3 helps the body absorb calcium and phosphorus, which are important for the formation and maintenance of bone strength*. In addition, vitamin K2 can provide additional support for the development of strong bones and the cardiovascular system, as it can potentially promote healthy blood clotting.
| Size/Form | 60 Capsule |
| Servings | 60 |
| Dosage | 1 Capsule(s) |
