Vitamins D and K with Sea-Iodine (60 Capsules)

Vitamins D and K with Sea-Iodine (60 Capsules)

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About This Product

  • Supports bone, immune, cardiovascular, and thyroid health
  • With 1,000mcg of salt-free Sea-Iodine™
  • Non-GMO and gluten-free

This convenient, once-daily supplement from Life Extension combines vitamin D3, vitamin K, and Sea-Iodine for triple-action health support. It promotes cognitive health, healthy bone density, and immune function with 125mcg of vitamin D3; helps maintain optimal calcium balance with 2,100mcg of vitamin K; and supports the production of thyroid hormones with 1,000mcg of Sea-Iodine.

Frequently Asked Questions

What is Sea-Iodine?

Sea-Iodine is a proprietary formula made from organic marine algae designed to support healthy iodine levels without the use of salt. Many individuals choose to avoid table salt in an effort to minimize their sodium intake, but reduced iodized salt intake can lead to suboptimal iodine levels.

Directions

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

Warning

Individuals consuming more than 50 mcg (2,000 IU)/day of vitamin D (from diet and supplements) should periodically obtain a serum 25-hydroxy vitamin D measurement. Do not exceed 250 mcg per day unless recommended by your doctor. Vitamin D supplementation is not recommended for individuals with high blood calcium levels. If you have a thyroid condition or are taking antithyroid medications, do not use without consulting your healthcare practitioner. If you are taking anticoagulant or antiplatelet medications, or have a bleeding disorder, consult with your healthcare provider before taking this product. KEEP OUT OF REACH OF CHILDREN. DO NOT EXCEED RECOMMENDED DOSE. Do not purchase if outer seal is broken or damaged. When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating. Store tightly closed in a cool, dry place.

Read More
Serving Size: 1 Capsule
Number of Servings: 60 Servings
Amount Per Serving
% Daily Value
VITAMIN D  - (AS CHOLECALCIFEROL)
625%
VITAMIN K ACTIVITY  - VITAMIN K1 (AS PHYTONADIONE) 1000 MCG VITAMIN K2 (AS MENAQUINONE-4) 1000 MCG VITAMIN K2 (AS MENAQUINONE-7) 100 MCG
1750%
IODINE  - (FROM SEA-IODINETM COMPLEX BLEND (ORGANIC KELP AND BLADDERWRACK EXTRACTS, POTASSIUM IODIDE)
667%

Other Ingredients:

Microcrystalline cellulose, vegetable cellulose (capsule), maltodextrin, modified food starch, dicalcium phosphate, stearic acid, silica.

Brand:
Life Extension
Form:
Capsules
Serving Size:
1 Capsule
Number of Servings:
60 Servings
Price per Serving:
($0.37 / serving)
Product Weight:
2  OZ
Specialty Diets:
Gluten Free ,  Non-GMO
Item # :
UX-1079 / 2018794
369 Ratings
4.9out of 5 stars
369 Ratings

Rated 5 stars by 93% of reviewers

Rated 4 stars by 6% of reviewers

Rated 3 stars by 0% of reviewers

Rated 2 stars by 1% of reviewers

Rated 1 star by 0% of reviewers

Would you recommend?
1-10 of 369 Reviews
Rated 4 out of 5
Mar 6, 2026
Good, but keep up with labs in case you need More
I trust the company, I've done my research and have heard great things. I've been taking a supplement for a while. Unfortunately, at my last doctors visit, I was prescribed a prescription strength vitamin D because I was extremely low even after taking this product for quite a while. However, every person is different, different needs at different times, based on so many variables. Now that I am off my prescription dose. I will continue to take this supplement as I do believe in the company and their products and my doctor did not object.
Rated 5 out of 5
Feb 19, 2026
Cover the bases !
My Vitamin D level has been low in the past + I currently live in the Midwest - using this product is kind of a no-brainer !
Rated 5 out of 5
Feb 5, 2026
Excellent product
I have taken this for years at the suggestion of my GP. Great value. Works great for me.
Rated 5 out of 5
Dec 15, 2025
A Must Have in the Winter
That pills are tiny, easy to swallow. Since I live in a northern climate and don't get much sun in the winter, these help. I had my vitamin D level checked recently and it is in the normal range.
Rated 5 out of 5
Dec 12, 2025
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.
Rated 5 out of 5
Nov 30, 2025
Excellent quality
I've tried many brands and This Vitamin D with K is far superior to others. Great our purchase!
Rated 5 out of 5
Nov 14, 2025
Needed!
Don't know difference but know I need it
Rated 5 out of 5
Nov 8, 2025
Love this combo
The perfect combo.
Rated 5 out of 5
Nov 5, 2025
Helped my bloodwork.
Just did labs at 54. Dr's amazed
Rated 5 out of 5
Oct 30, 2025
Great
Great
Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.

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2 Questions
Why did you choose this?

My doctor recommended it.

Needed for Wisconsin winters

SAD season.

Use before great product

I can find where is says what the IU are fod D3 and the K for this product?

Best Answer:  Under the picture is tabs, product info, supplement facts etc. click on supplement facts.

Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.

 

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