Life Extension
Vitamin D3 with Sea-Iodine™, 60 capsules
74/100
SUPPIE SCORE
72/100
EFFICACY
Medium
SAFETY
90/100
CLEANLINESS
What Does Vitamin D3 with Sea-Iodine™, 60 capsules Do?
Vitamin D3 125 mcg provides a dose above common maintenance ranges (50-50 mcg) with cholecalciferol form supported for raising 25(OH)D levels; iodine 1000 mcg from Sea-Iodine blend meets upper intake thresholds with variable seaweed sourcing and potassium.
What are the benefits of combining vitamin D3 with iodine in one supplement?
How does 125 mcg vitamin D3 compare to typical daily recommendations?
Is 1000 mcg iodine from kelp and bladderwrack extracts safe for daily use?
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What Are the Benefits of Vitamin D3 with Sea-Iodine™, 60 capsules?
Based on proven scientific research
Bone healthStrong
Thyroid supportModerate
Immune functionModerate
Calcium absorptionStrong
Good For:
What Are the Side Effects of Life Extension Vitamin D3 with Sea-Iodine™, 60 capsules?
Always consult your health practitioner if in doubt.
RiskMedium Risk
Overview
•Vitamin D3 at 125 mcg (5000 IU) exceeds typical 50-100 mcg studied doses; monitor serum 25(OH)D to avoid hypercalcemia.
•Iodine at 1000 mcg approaches the 1100 mcg adult UL; chronic intake may alter thyroid function in susceptible individuals.
•Kelp and bladderwrack extracts can vary in actual iodine content; label disclosure does not guarantee batch consistency.
•Potassium iodide component is highly bioavailable; excess may suppress thyroid hormones in those with preexisting conditions.
Potential Side Effects
Negative Interactions
Allergens
Contains seaweed-derived iodine (kelp, bladderwrack)
Inactive Ingredients
Microcrystalline cellulose
Low RiskVegetable cellulose (capsule)
Low RiskMaltodextrin
Low RiskModified food starch
Low RiskSilica
Low RiskStearic acid
Low RiskWhat Are the Ingredients in Life Extension Vitamin D3 with Sea-Iodine™, 60 capsules?
Vitamin D (as cholecalciferol)
125 mcg
Iodine [from Sea-Iodine™ Complex Blend (organic kelp and bladderwrack extracts, potassium iodide)]
1,000 mcg
organic kelp and bladderwrack extracts
potassium iodide
microcrystalline cellulose
vegetable cellulose (capsule)
maltodextrin
modified food starch
silica
stearic acid
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Dosage & Bioavailability
How the active doses and forms in Vitamin D3 with Sea-Iodine™, 60 capsules compare to the research.
•Vitamin D (as cholecalciferol) is listed at 125 mcg per serving; without a source-specific reference range, dose adequacy cannot be graded.
•Iodine [from Sea-Iodine™ Complex Blend (organic kelp and bladderwrack extracts, potassium iodide)] is listed at 1,000 mcg per serving; without a source-specific reference range, dose adequacy cannot be graded.
•Organic kelp and bladderwrack extracts has no individual amount disclosed, so its dose cannot be assessed.
Sources & References
Vitamin d3 with sea iodine
Information from www.lifeextension.com
Vitamin d
Information from examine.com
NBK549768
Information from www.ncbi.nlm.nih.gov
Iodine
Information from examine.com
PMC10399747
Information from pmc.ncbi.nlm.nih.gov
PMC8035890
Information from pmc.ncbi.nlm.nih.gov
VitaminD HealthProfessional
Information from ods.od.nih.gov
Frequently Asked Questions
Common questions about Life Extension Vitamin D3 with Sea-Iodine™, 60 capsules