SKU: 39104153322

Life Extension Vitamins D and K with Sea-Iodine™ - 60 Capsules

Sale price$16.20 Regular price$18.00
Save 10%

Pay in installments of $4.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Oct 19 - Oct 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Life Extension Vitamins D and K with Sea-Iodine™ - 60 CapsulesThis formula delivers 125 mcg (5,000 IU) of vitamin D3, 2100 mcg of vitamin K and 1000 mcg of iodine in a convenient, once daily supplement to support bone, brain, thyroid and vascular health. Vitamins D and K with Sea Iodine Benefits Supports healthy cognitive function Promotes bone, immune & cardiovascular health Helps inhibit calcium buildup in the arteries Helps counteract possible iodine deficiency in healthy diets Your skin produces vitamin D

This formula delivers 125 mcg (5,000 IU) of vitamin D3, 2100 mcg of vitamin K and 1000 mcg of iodine in a convenient, once-daily supplement to support bone, brain, thyroid and vascular health.

Vitamins D and K with Sea-Iodine™ Benefits

  • Supports healthy cognitive function
  • Promotes bone, immune & cardiovascular health
  • Helps inhibit calcium buildup in the arteries
  • Helps counteract possible iodine deficiency in healthy diets

Your skin produces vitamin D when in direct sunlight, but you should not get your vitamin D from unprotected sun exposure or indoor tanning devices because of the potential effects on skin health. 

Iodine is a trace element essential for the production of thyroid hormones, and vitamin K is an essential nutrient that promotes both arterial and bone health.

Iodine is essential for thyroid health

Iodine is a trace element necessary for the production of the thyroid hormones triiodothyronine (T3) and thyroxine (T4).1 Iodine is abundant in seafood and sea vegetables, but not everyone likes or has access to marine foods, and vegan diets sometimes lack adequate iodine.2

Commercial salt makers add iodine to table salt to make up for this potential deficiency. However, we now know the health risks of eating too much salt, so health-conscious people may miss out on an easy source of iodine. Vitamins D and K with Sea-Iodine™ delivers 1,000 mcg of iodine to support healthy iodine levels.

Vitamin K1 and two different types of K2

Vitamin K helps inhibit calcium buildup in your arteries while promoting healthy calcium absorption into your bone matrix.3 K1 is the most common form of vitamin K in the diet, coming primarily from leafy green vegetables—though vitamin K1 isn’t well absorbed from these foods.

Vitamin K2 is found in cheese, eggs and fermented soybeans. It has been shown to be more bioavailable than K1 and to remain active in the body far longer. The MK-4 and MK-7 forms of vitamin K2 also provide important benefits but have different tissue distributions and bioavailability, so it’s important to take both.4,5 This formula contains both forms of vitamin K2.

Vitamin D3 for cognitive, bone and immune health

Healthy serum vitamin D levels have been shown to correspond with better cognitive function.6,7 Vitamin D, along with vitamin K and essential minerals, is necessary for facilitating the transport of calcium into the bone matrix for strong, healthy bones and teeth.8 Vitamin D also plays a critical role in healthy immune function.9

Some people may need 125 mcg (5,000 IU) to 200 mcg (8,000 IU) of vitamin D3 a day to achieve healthy blood levels of vitamin D. If your multivitamin already delivers 25-75 mcg (1,000–3,000 IU) of vitamin D, adding Vitamins D and K with Sea-Iodine™ may help achieve healthy vitamin D levels.

Vitamin D3 for heart health and blood pressure support

Vitamin D promotes a healthy inflammatory response, supports cardiovascular health and encourages healthy endothelial function. Vitamin D also helps inhibit excess renin levels. Healthy renin levels help maintain healthy blood pressure already within the normal range.10

Getting enough vitamins D and K and iodine

This vitamin D3 supplement delivers 125 mcg (5,000 IU) of vitamin D3 as cholecalciferol per capsule. We suggest that you take a 25-hydroxy vitamin D blood test after 3 months to assess and adjust your dosage. Your optimal blood levels should be 50–80 ng/ml year-round.

Ensure you get enough of these three essential nutrients with Vitamins D and K with Sea-Iodine™.

 

Please see the Supplement Facts tab for a full listing of the Ingredients in this product. In summary, it contains: Vitamin D3 (as cholecalciferol), Vitamin K activity from: Vitamin K1 (as phytonadione), Vitamin K2 (as menaquinone-4), Vitamin K2 (as trans menaquinone-7), lodine (from Sea-lodine ™ Complex Blend (organic kelp and bladderwrack extracts, potassium iodide).

Supplement Facts

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

Caution
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 a vitamin K antagonist (e.g. warfarin), consult your healthcare practitioner before taking this product.

Warnings
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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39104153322

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
L. from lil Rhody
Houston, US
★★★★★ 2
cute but not the material I expected
Size: Small, Color: Pure Black
This was really cute, well made and fit as expected. Unfortunately, I have sensitive skin and I found the material to be scratchy so I sent it back.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
C
Verified Purchase
C. Quittmeyer
San Leandro, US
★★★★★ 5
Nice quality sweater, well made and soft.
Size: Large, Color: Pure Beige
I love this sweater - but I bought it just in time for summer, so it won't get much use until fall! It fits great, it is really soft and the overall quality is quite good. I plan to buy another one in another color as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
N
Verified Purchase
Nola
Omaha, US
★★★★★ 4
Nice casual looking sweater
Size: Small, Color: Pure Black
I purchased the black/cream inset sweater in a small. I usually wear a small. I fits loose, but NOT baggy. I like the loose fit. The sweater feels so soft. Nice looking sweater. Very happy with the sweater, but could have ordered a medium for a boxier fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
C
Verified Purchase
Constance Law
Port Orchard, US
★★★★★ 5
Good quality & trendy color sweater
Size: Large, Color: Pure Apricot
This sweater is very soft, light and very suitable for keeping mild warm at the temperature of 20c or inside an air conditioning room. Particularly, the trendy color for 2026 in brown suede jacket, this sweater is real good matching item! I like it! 😍😍😍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
B
Verified Purchase
BETTY HILDRETH
Boise, US
★★★★★ 5
very stylish
Size: Medium, Color: Pure Apricot
true to size. very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

recommand products