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Kelp

Swanson

4.7
(2247 ratings)
Iodine 225 mcg
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Score 85.0

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)Servings size: 1 Tablet(s) (250 servings)
Selected goals:
Other goals:
General Health
Energy
Brain Health
Productivity Boost
Metabolism Boost

Score 85.0

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.

Analysis

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.

Pros
  • 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.
Cons
  • 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.
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$7.99($0.03 per serving)
iHerb
$ 7.99
Amazon
$ 9.99
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Effectiveness for goals

Dosage, timing & forms

Safety & interactions

Ingredients

IngredientAmount per serving
Iodine (Kelp) 225 mcg
Atlantic Kelp (Iodine) 56 mg
Adults 18–50
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Categories

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

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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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