SuppHelper
search
Home›Supplements›Mineral›Iodine›Kelp Swanson
Product Image

Kelp

Swanson

4.7
★ ★ ★ ★ ★
(2247 ratings)
Iodine 225 mcg
Product Image
Score 85

Swanson Kelp provides a solid 225mcg iodine dose at an exceptionally low 2 cents per serving. This makes it an outstanding value for general iodine supplementation. Its widespread popularity is evidenced by thousands of positive reviews.

Quantity: 250 Tablet(s) • (250 servings)
Goals:
flag Energy
flag Mental Focus
flag Metabolism Boost
flag Hair Health
flag Weight Loss

leaderboard Score 85

Swanson Kelp provides a solid 225mcg iodine dose at an exceptionally low 2 cents per serving. This makes it an outstanding value for general iodine supplementation. Its widespread popularity is evidenced by thousands of positive reviews.

insightsAnalysis

This Swanson Kelp product delivers 225mcg of iodine, which is a robust dose supporting thyroid function without being excessively high. Its standout feature is the remarkable price point of 2 cents per serving, making it highly accessible. While kelp's natural variability in iodine content and potential for heavy metals is a general concern for this form, Swanson is a large-scale distributor, and the product's very high review count (over 2300) suggests it is a reliable choice for many consumers seeking a budget-friendly iodine source.
thumb_upPros
  • Extremely low price per serving, offering excellent affordability.
  • Provides a good dose of iodine (225mcg), surpassing the RDA.
  • Very high review count indicates broad consumer satisfaction and popularity.
thumb_downCons
  • As a kelp-based product, the actual iodine content may vary slightly between batches.
  • Potential for heavy metal contamination inherent to kelp sourcing, though quality control measures are typically in place.
  • Some nutritionists prefer more precise, standardized forms of iodine over natural kelp for consistent dosing.
flagReport analysis
$7.99($0.03 per serving)
iHerb
$ 7.99
Amazon
$ 9.99
flagReport prices

Ingredients

IngredientAmount per serving
Iodine
225 mcg
Atlantic Kelp
56 mg
person Adults 18–50
flagReport overview

Categories

Iodine 85
This is a highly competitive iodine product, offering a substantial dose from kelp at an exceptionally low price. While kelp's variability is noted, its overall value and strong consumer backing make it a top contender in the iodine collection.

Goals

flag General Health 85
This product provides a solid dose of iodine essential for maintaining general health by supporting optimal thyroid function. Its excellent value makes it an accessible choice for foundational health support for most individuals.
flag Metabolism Boost 85
Iodine is a direct precursor to thyroid hormones, which are central to regulating the body's metabolic rate. This supplement provides a very effective dose to ensure proper thyroid hormone synthesis, directly supporting a healthy and efficient metabolism.
flag Brain Health 80
Adequate iodine intake is critical for cognitive function and brain development, as thyroid hormones directly influence neural processes. This supplement offers a good dose to support brain health, and its affordability helps ensure consistent intake, which is key for long-term benefits.
inventory_2Recommended products
80 Value

Arctic-Kelp 225 mcg

Country Life
4.9
★★★★★
(7981 ratings)
Offering 225mcg of iodine at 3 cents per serving from Country Life, a well-regarded brand, this provides an excellent balance of effective dosage, quality, and low cost, representing strong value.
Other sellers (2)
88 Value

Kelp

NOW
4.8
★★★★★
(9397 ratings)
This organic kelp delivers a higher 325mcg dose for just 3 cents per serving, presenting superior value by providing more iodine potency from a quality source at an incredibly competitive price point.
Other sellers (4)
78 Value

Kelp 325 mcg

Nutricost
4.9
★★★★★
(208 ratings)
At 4 cents per serving for 325mcg of kelp iodine, Nutricost offers a higher dose than the original at a very low price, making it a compelling option for those seeking higher iodine content per dollar.
Other sellers (1)
90 Performance

Potassium Plus Iodine

NOW
4.8
★★★★★
(7346 ratings)
This alternative provides iodine in the precise form of Potassium Iodide at 225mcg, offering superior consistency and reliability compared to kelp, eliminating concerns about natural variability and heavy metals.
Other sellers (5)
85 Performance

Sea-Iodine 1000 mcg

Life Extension
4.7
★★★★★
(25729 ratings)
From Life Extension, a brand highly respected for ingredient quality and purity, this offers a higher 1000mcg dose. It's a superior choice for those seeking a more potent and precisely sourced iodine, especially under medical guidance.
Other sellers (3)
75 Performance

Kelp Whole Thallus 600 mg

Nature's Way
4.7
★★★★★
(11483 ratings)
While pricier per serving, Nature's Way is a long-standing, trusted brand with a massive positive review base, suggesting a highly reliable kelp product with 270mcg of iodine, which some users may prefer for its established reputation.
Other sellers (2)
80 Budget

Arctic-Kelp 225 mcg

Country Life
4.9
★★★★★
(7981 ratings)
While slightly more expensive per serving at 3 cents, it's still an extremely affordable option with a comparable 225mcg dose from a highly reputable brand, making it a very close alternative in terms of cost-effectiveness.
Other sellers (2)
88 Budget

Kelp

NOW
4.8
★★★★★
(9397 ratings)
At 3 cents per serving, this organic kelp offers a higher dose (325mcg) and is from a highly respected brand, providing more iodine per penny, making it a strong contender for those prioritizing organic options at a similar low cost.
Other sellers (4)
82 Budget

Kelp

NOW
4.8
★★★★★
(23712 ratings)
Priced at 3 cents per serving for 150mcg of organic kelp, it's slightly more expensive per dose but offers the benefit of an organic source from a trusted brand at a very low absolute price.
Other sellers (3)
80 Value

Arctic-Kelp 225 mcg

Country Life
4.9
★★★★★
(7981 ratings)
Offering 225mcg of iodine at 3 cents per serving from Country Life, a well-regarded brand, this provides an excellent balance of effective dosage, quality, and low cost, representing strong value.
Other sellers (2)
88 Value

Kelp

NOW
4.8
★★★★★
(9397 ratings)
This organic kelp delivers a higher 325mcg dose for just 3 cents per serving, presenting superior value by providing more iodine potency from a quality source at an incredibly competitive price point.
Other sellers (4)
78 Value

Kelp 325 mcg

Nutricost
4.9
★★★★★
(208 ratings)
At 4 cents per serving for 325mcg of kelp iodine, Nutricost offers a higher dose than the original at a very low price, making it a compelling option for those seeking higher iodine content per dollar.
Other sellers (1)
90 Performance

Potassium Plus Iodine

NOW
4.8
★★★★★
(7346 ratings)
This alternative provides iodine in the precise form of Potassium Iodide at 225mcg, offering superior consistency and reliability compared to kelp, eliminating concerns about natural variability and heavy metals.
Other sellers (5)
85 Performance

Sea-Iodine 1000 mcg

Life Extension
4.7
★★★★★
(25729 ratings)
From Life Extension, a brand highly respected for ingredient quality and purity, this offers a higher 1000mcg dose. It's a superior choice for those seeking a more potent and precisely sourced iodine, especially under medical guidance.
Other sellers (3)
75 Performance

Kelp Whole Thallus 600 mg

Nature's Way
4.7
★★★★★
(11483 ratings)
While pricier per serving, Nature's Way is a long-standing, trusted brand with a massive positive review base, suggesting a highly reliable kelp product with 270mcg of iodine, which some users may prefer for its established reputation.
Other sellers (2)
flagReport alternatives

SuppHelper

Compare supplements smarter. Science-backed, user-rated, updated daily.

© 2025 SuppHelper. All rights reserved.

Explore

  • Compare Supplements
  • Health Goals
  • Stacks

Legal

  • Privacy Policy
  • Terms of Use
  • Medical Disclaimer

Stay in the Loop