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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

4.8 stars out of 976 reviews
(4.8)|
976 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
Current price is $18.0030.0 ¢/count
Price when purchased online
  • Free 90-day returns

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4.656557377049181 stars out of 5, based on 1221 seller reviews(4.7)
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Customer ratings & reviews

4.8 out of 5 stars
stars976 ratings789 reviews
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Reviews summary

Pros
  • : Offers high-quality products at this price.
  • : Made with high-quality manufacturing standards.
  • : Provides a single supplement with multiple nutrients.
  • : Easy to ingest due to compact design.
  • : Helps regulate vitamin d levels in the body.
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Showing 1-3 of 789 reviews

Jul 30, 2025
Sylvia
Top Reviewer
Sold byLife Extension Buyers ClubDelivered byWalmart
5 out of 5 stars review

Verified Purchase

normally I would say that you need to see your doctor first. they didn't let me see a doctor. I only saw a nurse. she said I had a low functioning thyroid. and then she didn't prescribe anything. I got this as a last resort. I went from sleeping 18 hours a day to functioning like a human being again. I think this stuff is great.

Helpful?2BFLX0ZJ9PPR875219139
Nov 29, 2025
Mala
Sold byLife Extension Buyers ClubDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Small pills, easy to swallow, no aftertaste. Take separate from other pills. I combined it with other supplement and experienced some slight dizziness (I'm super sensitive to meds).

Helpful?2BFLX0ZJ9PPR875219139
Dec 12, 2025
Stacey
5 out of 5 stars review

Seller Verified Purchase

No issues with labs

Been using this product for years and have had no issues with my D or thyroid levels. Use mostly starting in September through April, and sometimes a few times per week during warmer months, depending on how much sunshine I'm getting.

Review from Life Extension
Helpful?2BFLX0ZJ9PPR875219139