Life Extension Vitamin D3 with Sea-Iodine™ 125 mcg (5000 IU) – Immune Support Bone Health Thyroid Health – 1 Daily Gluten-Free Non-GMO – 60 Capsules
Analysis updated October 2026 · How Scout scores
At a glance
Summary
This supplement contains high-quality ingredients such as Vitamin D in the form of cholecalciferol and iodine from natural sources, which are beneficial for bone health and thyroid function. The formulation is generally clean, with minimal processing and no harmful additives, although the presence of maltodextrin and modified food starch slightly detracts from its purity. Overall, it offers a well-balanced blend of essential nutrients without significant negative factors.
Key ingredients 8
Vitamin DVery Good
Vitamin D, as cholecalciferol, is essential for calcium absorption and bone health. It is a high-quality active ingredient that supports immune function and overall health. The form used is well-absorbed and effective in maintaining adequate vitamin D levels.
Risks
Excessive intake of vitamin D can lead to toxicity, causing hypercalcemia and associated health issues.
Benefits
Supports bone health, immune function, and may reduce the risk of certain diseases.
IodineGood
Iodine is crucial for thyroid function and metabolic regulation. The Sea-Iodine Complex Blend provides iodine from natural sources like organic kelp and bladderwrack extracts. This form is beneficial for maintaining healthy thyroid hormone levels.
Risks
Excessive iodine intake can lead to thyroid dysfunction, including hyperthyroidism or hypothyroidism.
Benefits
Supports thyroid health and metabolic processes.
Microcrystalline CelluloseNeutral
Microcrystalline cellulose is a common filler used to provide bulk in capsules. It is derived from plant fibers and is generally considered safe. It does not contribute any nutritional value but aids in the manufacturing process.
See more about Microcrystalline Cellulose →Vegetable CelluloseNeutral
Vegetable cellulose is used to form the capsule shell and is derived from plant sources. It is a neutral ingredient that is safe for consumption. It is suitable for vegetarians and vegans.
See more about Vegetable Cellulose →SilicaNeutral
Silica is used as an anti-caking agent to prevent clumping in supplements. It is a naturally occurring mineral and is considered safe in small amounts. It does not provide nutritional benefits but ensures product quality.
See more about Silica →Stearic AcidNeutral
Stearic acid is used as a lubricant in supplement manufacturing. It is a fatty acid found in many foods and is generally recognized as safe. It does not contribute to the nutritional profile of the product.
See more about Stearic Acid →MaltodextrinBad
Processed additive flagged under Scout's ingredient doctrine.
Risks
May affect blood sugar levels if consumed in large amounts.
Modified Food StarchBad
Chemically modified starch additive.
See more about Modified Food Starch →Processing
Unprocessed or Minimally Processed Foods
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