Life Extension Vitamins D and K with Sea-Iodine 5000 IU D, 2100 mcg K1 K2, 1000 mcg iodine 60 capsules
Life Extension®, Vitamins D and K with Sea-Iodine™, 5000 IU vitamin D, 2100 mcg K1, K2, 1000 mcg iodine, 60 capsules
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Life Extension®, Vitamins D and K with Sea-Iodine™, 5000 IU vitamin D, 2100 mcg K1, K2, 1000 mcg iodine, 60 capsules

1,113 ratings

Key item features

  • Life Extension®, Vitamins D and K with Sea-Iodine™, 5000 IU vitamin D, 2100 mcg K1, K2, 1000 mcg iodine, 60 capsules
  • Support bone, thyroid and arterial health with Vitamins D and K with Sea-Iodine™.
  • Take one (1) capsule daily with food, or as recommended by a healthcare practitioner.
  • 5000 IU of vitamin D3, 2100 mcg vitamins K1 and two forms of K2, 1000 mcg of iodine.
  • Promotes bone, thyroid and arterial health. Helps maintain healthy calcium balance.
  • 1-Daily| G F| non-GMO
  • These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Specs

Primary ingredient, InSea2® (Organic Ascophyllumnodosum and Fucusvesiculosus extracts), Iodine (as potassium iodide) USP Granular, Vitamin D3 (cholecalciferol) 100,000 IU/G, Vitamin K1 (phytonadione) 5% trituration, Vitamin K2 (all-trans menaquinone-7) (1%), Vitamin K2 (as menaquinone-4) 98%Health concern, Thyroid SupportIngredient preference, Gluten-FreeServing size, 1 CapsuleCount per pack, 60Product usage frequency, Daily

About this item

Product details

Looking to get enough of the hard-to-find nutrients vitamin D, vitamin K, and iodine? Look no further. We’ve combined vitamin D3 with vitamin K and iodine for triple-action health support. Vitamin D supports immune health, healthy bone density, cognitive health and more. Vitamin K helps maintain your body’s calcium balance, and iodine is essential for the production of thyroid hormones. Get these vital nutrients in a convenient, once-daily supplement.
  • Life Extension®, Vitamins D and K with Sea-Iodine™, 5000 IU vitamin D, 2100 mcg K1, K2, 1000 mcg iodine, 60 capsules
  • Support bone, thyroid and arterial health with Vitamins D and K with Sea-Iodine™.
  • Take one (1) capsule daily with food, or as recommended by a healthcare practitioner.
  • 5000 IU of vitamin D3, 2100 mcg vitamins K1 and two forms of K2, 1000 mcg of iodine.
  • Promotes bone, thyroid and arterial health. Helps maintain healthy calcium balance.
  • 1-Daily| G F| non-GMO
  • These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
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Specifications

Primary ingredient

InSea2® (Organic Ascophyllumnodosum and Fucusvesiculosus extracts), Iodine (as potassium iodide) USP Granular, Vitamin D3 (cholecalciferol) 100,000 IU/G, Vitamin K1 (phytonadione) 5% trituration, Vitamin K2 (all-trans menaquinone-7) (1%), Vitamin K2 (as menaquinone-4) 98%

Health concern

Thyroid Support

Ingredient preference

Gluten-Free

Serving size

1 Capsule

Indications

Directions

Dosage

Take one (1) capsule once daily with food, or as recomended by a healthcare practitioner.

Warranty

Warranty information

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Ingredients

Warnings

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Customer ratings & reviews

4.8 out of 5 stars
stars
1,113 ratings845 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars88% (976)
  2. 4 stars8% (85)
  3. 3 stars2% (20)
  4. 2 stars1% (7)
  5. 1 star2% (25)

Reviews summary

Pros

  • : The product offers a two-month supply at economical pricing.
  • : The compact form allows smooth ingestion.
  • : It pairs fat-soluble nutrients with added iodine.
  • : Blood tests show d status within recommended ranges.
  • : It raises resistance to illness and reduces flu cases.
  • : Made with premium ingredients and materials.
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Showing 1-3 of 845 reviews

Oct 15, 2026
Reviewer name: ALISON
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Great product, would love bigger quantities

I like this product, and it's a good price. My only wish would be more product in the bottle. I take it everyday, it's a small pill and most of the bottle is empty. Please sell in bigger quantities so there is less wasted space. Thx!

Review from Life Extension
Helpful?2BFLX0ZJ9PPR875219139
reply from Supplier Response

Thank you for your feedback. We are glad to hear you are enjoying the product and appreciate your suggestion for larger quantities. We take sustainability seriously, and all of our bottles are recyclable. Bottle size is primarily driven by label requirements rather than pill size or bottle fill level, as federal regulations require a minimum font size for supplement labels. We have shared your comments with our Product Development team for future consideration.

Oct 21, 2026
Reviewer name: SALLIE
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Love your products

Always know I can trust Life Extension to make a great supplement at a reasonable price!

Review from Life Extension
Helpful?2BFLX0ZJ9PPR875219139
Jun 22, 2026
Reviewer name: JOHN
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

A supplement you need to have!

A very valuable supplement that provides 3 crucial nutrients in one package. The ordering and shipping process went without a hitch. I highly recommend this supplement to prospective customers.

Review from Life Extension
Helpful?2BFLX0ZJ9PPR875219139
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