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We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Life Extension Vitamins D and K with Sea-Iodine is a once-daily dietary supplement designed to support bone health, immune function, cardiovascular wellness, calcium balance, and thyroid hormone production. This formula combines vitamin D3, multiple forms of vitamin K, and iodine from Sea-Iodine™ Complex in a convenient 1-capsule-per-day serving.
Vitamin D3 is known as the “sunshine” vitamin and helps support bones, immune health, cognitive function, endothelial function, and blood pressure already within the normal range. Vitamin K supports healthy calcium balance by helping guide calcium to the bones while supporting arterial health. Iodine is included to support the body’s natural production of thyroid hormones such as T3 and T4.
This supplement is ideal for adults who want daily support for vitamin D, vitamin K, and iodine intake, especially those who may not get enough sun exposure, leafy greens, seafood, or iodized salt in their diet. The formula is gluten free, Non-GMO LE Certified, and provides 90 capsules per bottle.
| Product Detail | Information |
|---|---|
| Brand | Life Extension |
| Product Name | Vitamins D and K with Sea-Iodine™ |
| Supplement Type | Dietary Supplement |
| Capsule Count | 90 Capsules |
| Serving Size | 1 Capsule |
| Suggested Use Shown on Label | 1 Daily |
| Formula Highlight | Iodine with Sea Plant Complex |
| Storage | Store tightly closed in a cool, dry place. |
| Nutrient | Amount Per Serving | % Daily Value |
|---|---|---|
| Serving Size | 1 Capsule | — |
| Vitamin D3 as cholecalciferol | 125 mcg | 625% |
| Vitamin K activity from Vitamin K1 and Vitamin K2 | 2100 mcg | 1750% |
| Vitamin K1 as phytonadione | 1000 mcg | Included in Vitamin K activity |
| Vitamin K2 as menaquinone-4 | 1000 mcg | Included in Vitamin K activity |
| Vitamin K2 as trans menaquinone-7 | 100 mcg | Included in Vitamin K activity |
| Iodine from Sea-Iodine™ Complex Blend | 1000 mcg | 667% |
| Ingredient | Type | Source / Form Listed |
|---|---|---|
| Vitamin D3 | Active Ingredient | Cholecalciferol |
| Vitamin K1 | Active Ingredient | Phytonadione |
| Vitamin K2 | Active Ingredient | Menaquinone-4 |
| Vitamin K2 | Active Ingredient | Trans menaquinone-7 |
| Iodine | Active Ingredient | Sea-Iodine™ Complex Blend: organic kelp and bladderwrack extracts, potassium iodide |
| Microcrystalline cellulose | Other Ingredient | Listed on label |
| Vegetable cellulose | Capsule Ingredient | Capsule |
| Maltodextrin | Other Ingredient | Listed on label |
| Food starch-modified | Other Ingredient | Listed on label |
| Dicalcium phosphate | Other Ingredient | Listed on label |
| Stearic acid | Other Ingredient | Listed on label |
| Silica | Other Ingredient | Listed on label |
| Claim / Compliance Item | Label Information |
|---|---|
| Gluten Free | Gluten Free icon shown on front label |
| Non-GMO | Non GMO LE Certified icon shown on front label |
| Daily Use | 1 Daily icon shown on front label |
| Product Category | Dietary Supplement |
| Manufacturer Information | Manufactured for Quality Supplements and Vitamins, Inc., Ft. Lauderdale, FL 33309 |
| Product Information Contact | 1-866-280-2852 |
Suggested use shown on the label is 1 capsule daily. For best results, take Life Extension Vitamins D and K with Sea-Iodine with a main meal that contains some healthy fat, because vitamins D and K are fat-soluble nutrients.
The best time of day is morning or midday with food. Avoid taking this supplement on an empty stomach if you are sensitive to minerals or iodine. Drink a full glass of water with each serving and maintain normal daily hydration.
This formula is designed for daily use, not short-cycle use. Consistent daily intake is generally more appropriate for nutrients such as vitamin D, vitamin K, and iodine. Benefits are nutritional and supportive; most users should not expect an immediate stimulant-like effect.
Consult a healthcare professional before use if you are pregnant, nursing, taking blood-thinning medication such as warfarin, using thyroid medication, managing a thyroid condition, or following a medically restricted iodine diet. Keep out of reach of children. Do not exceed the suggested serving unless directed by a qualified healthcare professional.
Vitamin D3 as cholecalciferol: Supports immune health, bone health, cognitive function, endothelial function, and healthy blood pressure already within the normal range.
Vitamin K1 as phytonadione: Helps support normal vitamin K activity and contributes to healthy calcium balance.
Vitamin K2 as menaquinone-4: Supports the body’s ability to route calcium toward bones and away from arteries as part of healthy calcium metabolism.
Vitamin K2 as trans menaquinone-7: A form of vitamin K2 included for extended vitamin K support and calcium balance.
Iodine from Sea-Iodine™ Complex Blend: Provides iodine from organic kelp and bladderwrack extracts plus potassium iodide. Iodine supports production of thyroid hormones such as T3 and T4.
Microcrystalline cellulose: A plant-derived capsule fill ingredient used to support capsule consistency.
Vegetable cellulose capsule: Forms the capsule shell and helps deliver the supplement without a gelatin capsule listed on the label.
Maltodextrin: Used as an inactive carrier ingredient to support ingredient handling and consistency.
Food starch-modified: An inactive ingredient used for texture, stability, and manufacturing consistency.
Dicalcium phosphate: Listed as an inactive ingredient and commonly used to support tablet or capsule structure.
Stearic acid: Used as a manufacturing aid to support smooth capsule production.
Silica: Used to help maintain ingredient flow and stability during manufacturing.
This formula combines vitamin D3, vitamin K, and iodine because they support complementary areas of wellness. Vitamin D3 supports calcium absorption and bone health, while vitamin K helps maintain calcium balance by supporting the proper routing of calcium in the body. Iodine supports thyroid hormone production, which is important for normal metabolic function.
The Sea-Iodine™ Complex adds iodine from sea plant sources, while the vitamin K blend includes K1 plus two forms of K2. Together, these nutrients create a once-daily formula for adults who want bone, immune, cardiovascular, thyroid, and calcium-balance support in one supplement.
Life Extension Vitamins D and K with Sea-Iodine is used for daily support of bone health, immune function, calcium balance, cardiovascular wellness, and thyroid hormone production.
The label shows a serving size of 1 capsule and a 1 daily use icon. Take with food and water unless your healthcare professional recommends otherwise.
Yes. The supplement facts list vitamin K2 as menaquinone-4 and vitamin K2 as trans menaquinone-7, along with vitamin K1 as phytonadione.
Yes. The front label displays a Gluten Free icon, making it suitable for shoppers looking for a gluten free vitamin D, K, and iodine supplement.
Yes. The bottle label shows Non GMO LE Certified, indicating the product carries Life Extension’s Non-GMO certification mark.
The iodine comes from Sea-Iodine™ Complex Blend, which includes organic kelp and bladderwrack extracts plus potassium iodide.
If you take thyroid medication or have a thyroid condition, consult your healthcare professional before using this product because it contains iodine.
People who are pregnant, nursing, using blood thinners, taking thyroid medication, or managing thyroid concerns should seek medical guidance before use.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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