Vitamins D and K with Sea-Iodine
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Microcrystalline Cellulose, Vegetable Cellulose, Maltodextrin, modified Food Starch, Dicalcium Phosphate, Stearic Acid, Silica
Recommended Use
Read the entire label and follow the directions carefully prior to use. Directions: Take one (1) capsule once daily with food, or as recommended by a healthcare practitioner. 1 Daily
Warnings
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
Frequently Asked Questions
What is Life Extension Vitamins D and K with Sea-Iodine's Formulate score?
Life Extension Vitamins D and K with Sea-Iodine scores 87 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Life Extension Vitamins D and K with Sea-Iodine worth it?
Life Extension Vitamins D and K with Sea-Iodine scores 87/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Life Extension Vitamins D and K with Sea-Iodine?
Each serving contains Vitamin D3 (125 mcg), Vitamin K (2100 mcg), Iodine (1000 mcg). Serving size: 1 Capsule(s). 60 servings per container.
How do I take vitamins d and k with sea-iodine?
Read the entire label and follow the directions carefully prior to use. Directions: Take one (1) capsule once daily with food, or as recommended by a healthcare practitioner. 1 Daily
Who makes Vitamins D and K with Sea-Iodine?
Vitamins D and K with Sea-Iodine is made by Life Extension. See Formulate's full grade and product lineup for Life Extension on its brand page.
Is Life Extension Vitamins D and K with Sea-Iodine third-party tested?
Life Extension lists the following certifications and testing for this product: Gluten free Non GMO LE Certified, Gluten-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.