Life Extension Sea-Iodine Capsules 60 Count
- 667% of the daily value of iodine per the description
- Kelp and bladderwrack-derived iodine
- 60 capsules, unflavored
- Non-GMO, gluten free, vegetarian
- Manufactured in the USA
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A high-strength iodine capsule from sea vegetables for thyroid health support without table salt. The strength is well above the daily value, so check the label and a clinician before taking it.
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ASIN: B005OTKEKSCategory: Iodine Supplements
Overview
An adult who avoids table salt gets a different iodine source here, with Life Extension Sea-Iodine drawing iodine from kelp and bladderwrack. The capsule is made for thyroid health support and daily iodine intake.
A convenient, salt-free way to get iodine from sea vegetables is the reason to consider it. The maker explains iodine's role in the thyroid hormones T3 and T4. The limitation is the strength, which is several times the daily value.
Who it's for
A diet low in salt and iodine-rich foods, where a daily capsule fills the gap, is the situation. People with thyroid disease, pregnant women and those on thyroid medication should speak with a clinician before using a high-strength iodine.
Pros and cons
- Salt-free way to get iodine
- Non-GMO and gluten free
- Made in the USA
- Strength far above daily value
- Directions not shown
- Concentration row unit unclear
Performance notes
Iodine is used by the thyroid to make T3 and T4, which regulate metabolism. A capsule gives a fixed amount, so the result depends on dose and on your iodine intake from food. Excess iodine can be a problem, which is why the strength matters.
Where it stands among iodine supplements
- #5 most-searched brand and model of the 6 iodine supplements lines we track (by search demand, not sales).
From the specs of the 16 iodine supplements we list; not a test result.
Specifications
| Brand | Life Extension |
|---|---|
| Dimensions & fit | |
| Item weight | 1.28 ounces |
| Capacity & performance | |
| Age Range Description | Adult |
| Included components | |
| Unit Count | 60 capsules |
| Other details | |
| Item Form | Capsule |
| Diet Type | Gluten free, vegetarian, non-GMO |
| Flavor | Unflavored |
| Iodine | 667% of daily value |
| Iodine source | Kelp and bladderwrack |
| Concentration | 1000 Mg |
| Primary Supplement Type | Iodine |
Frequently asked questions
How do I take Life Extension Sea-Iodine?
The listing gives no directions. Follow the label and ask a clinician about the dose.
How strong is Life Extension Sea-Iodine?
The description says it supplies 667% of the recommended daily value of iodine.
Where does the iodine come from?
Kelp and bladderwrack, per the title.
Is it vegetarian?
Yes. The title says gluten free, vegetarian and non-GMO.