Life Extension
Sea-Iodine
79/100
SUPPIE SCORE
85/100
EFFICACY
Medium
SAFETY
92/100
CLEANLINESS
What Does Sea-Iodine Do?
This supplement provides a high but UL-compliant iodine dose for effective thyroid support in deficient individuals, with strong evidence for preventing goiter and hypothyroidism.
What are the signs of iodine deficiency?
How does iodine support thyroid hormone production?
Is 1000 mcg of iodine safe for daily use?
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What Are the Benefits of Sea-Iodine?
Based on proven scientific research
Thyroid HealthVery strong
Metabolism SupportStrong
Cognitive FunctionModerate
Energy LevelsModerate
Good For:
What Are the Side Effects of Life Extension Sea-Iodine?
Always consult your health practitioner if in doubt.
RiskMedium Risk
Overview
•The 1000 mcg iodine dosage from kelp, bladderwrack, and potassium iodide is below the 1100 mcg UL for adults but may cause thyroid dysfunction in susceptible individuals with autoimmune thyroiditis or preexisting thyroid conditions.
•Potential side effects include metallic taste, nausea, diarrhea, and burning sensations in mouth/throat from excess iodine.
•Interactions with antithyroid drugs (e.g., methimazole) may reduce efficacy or cause hypothyroidism; consult healthcare provider if on thyroid medications.
•Not recommended for pregnancy/breastfeeding without medical advice due to risk of fetal/infant thyroid issues; avoid in children unless deficient.
•Seaweed extracts (kelp, bladderwrack) pose low risk of heavy metal contamination, but reputable brands like Life Extension test for purity.
•Iodine allergy or sensitivity risks include rash, hives, and swelling; discontinue if symptoms occur.
Potential Side Effects
Negative Interactions
Allergens
IodineSeaweed (kelp)Bladderwrack
Inactive Ingredients
Microcrystalline cellulose
Low RiskVegetable cellulose
Low RiskSilica
Low RiskStearic acid
Low RiskWhat Are the Ingredients in Life Extension Sea-Iodine?
Iodine
1000 mcg
microcrystalline cellulose
vegetable cellulose
silica
stearic acid
Scan the bottle in your cupboard
Same graded report you just read — on any label, in about 10 seconds.
Dosage & Bioavailability
How the active doses and forms in Sea-Iodine compare to the research.
•Iodine is listed at 1000 mcg per serving; without a source-specific reference range, dose adequacy cannot be graded.
•Iodine has no distinct chemical or delivery form stated, so no product-specific absorption advantage can be established.
Sources & References
Life extension sea iodine 1 000 mcg 60 vegetarian capsules
Information from www.iherb.com
Item01740
Information from www.lifeextension.com
Bladderwrack
Information from draxe.com
2804557
Information from academic.oup.com
Iodine pregnancy
Information from www.who.int
Drg 20062037
Information from www.mayoclinic.org
Hn 3653002
Information from www.peacehealth.org
Full
Information from www.frontiersin.org
1004
Information from www.mdpi.com
Iodine potassium iodide side effects.html
Information from www.drugs.com
Supplements
Information from www.lifeextension.com
Ata statement on the potential risks of excess iodine ingestion and exposure
Information from www.thyroid.org
Iodine Consumer
Information from ods.od.nih.gov
B07NC1S4RG
Information from www.amazon.com
Bladderwrack kelp
Information from wholisticmatters.com
Item01740
Information from www.lifeextension.com
Best iodine supplement
Information from www.healthline.com
S0002916522008097
Information from www.sciencedirect.com
Www.pennherb.com
Information from www.pennherb.com
S40618 025 02606 4
Information from link.springer.com
Bladderwrack benefits
Information from www.healthline.com
Health Library
Information from www.barnesjewish.org
Life extension sea iodine 1 000 mcg 60 vegetarian capsules
Information from www.iherb.com
PMC9816468
Information from pmc.ncbi.nlm.nih.gov
Iodine
Information from lpi.oregonstate.edu
Iodine
Information from www.webmd.com
Health benefits bladderwrack
Information from webmd.com
Item02040
Information from www.lifeextension.com
Generic drug.htm
Information from www.rxlist.com
286942661389
Information from www.ebay.com
406110107760
Information from www.ebay.com
PMC4192807
Information from pmc.ncbi.nlm.nih.gov
312305
Information from onlinelibrary.wiley.com
Item02040
Information from www.lifeextension.com
B005OTKEKS
Information from www.amazon.com
Iodine HealthProfessional
Information from ods.od.nih.gov
Products
Information from myvillagegreen.com
Product
Information from brandclub.com
Iodine uses
Information from www.healthline.com
Frequently Asked Questions
Common questions about Life Extension Sea-Iodine