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Kelp

NOW

4.8
(9397 ratings)
Iodine 325 mcg
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Score 88.0

A reliable organic kelp supplement from a trusted brand, offering a balanced iodine dose and excellent long-term value for thyroid and general health support.

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

Score 88.0

A reliable organic kelp supplement from a trusted brand, offering a balanced iodine dose and excellent long-term value for thyroid and general health support.

Analysis

NOW Kelp provides 325mcg of iodine sourced from organic kelp, a moderate dose that supports thyroid function without typically exceeding the safe upper intake level. The brand, NOW Foods, is widely recognized for its stringent quality control and third-party testing, addressing common concerns about heavy metals and inconsistent iodine levels in kelp. With 250 servings at a competitive price per serving, it offers substantial long-term value, making it a reliable and economical choice for general health and metabolic support.

Pros
  • Sourced from organic kelp, appealing to those preferring natural ingredients.
  • Comes from NOW Foods, a highly reputable brand known for quality and testing.
  • Excellent price per serving and high total servings (250) provide great long-term value.
Cons
  • Kelp's natural variability means iodine content can sometimes fluctuate slightly.
  • The 325mcg dose, while safe for most, is higher than the RDA and may not be suitable for individuals with specific thyroid conditions without medical advice.
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$9.99($0.03 per serving)
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Effectiveness for goals

Dosage, timing & forms

Safety & interactions

Ingredients

IngredientAmount per serving
Iodine
325 mcg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
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Categories

This product effectively delivers iodine from organic kelp, a commonly favored natural source. The dosage is substantial enough to address deficiencies and support daily needs, making it a reliable source within the iodine category.

Goals

Iodine is essential for overall well-being, particularly for thyroid hormone production, which regulates numerous bodily functions, supporting comprehensive general health maintenance.
Thyroid hormones, whose synthesis relies on iodine, are critical for cognitive function and nervous system development, supporting mental clarity and brain health.
Adequate thyroid function, supported by iodine, is crucial for energy metabolism; efficient metabolism translates to sustained energy levels and improved productivity throughout the day.
85 Value

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(7981 ratings)
Provides a massive 300 servings at the same competitive price per serving (3), offering superior longevity and overall value for a high-quality kelp supplement.
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4.8
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Delivers 200 servings of 150mcg iodine at a very low price per serving (3), offering excellent value for those seeking a standard RDA dose from a trusted brand.
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4.8
(7346 ratings)
Provides iodine in the form of Potassium Iodide, which offers more precise and consistent dosing compared to natural kelp, reducing variability concerns often associated with kelp supplements.
92 Performance

Arctic-Kelp 225 mcg

Country Life
4.9
(7981 ratings)
Offers a slightly lower, more universally suitable 225mcg dose from Arctic kelp, often perceived as a purer source, combined with Country Life's strong brand reputation for quality.
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Kelp

NOW
4.8
(23712 ratings)
Delivers the recommended daily allowance (RDA) of 150mcg of iodine, which is often a more appropriate and safer daily dose for general health maintenance for many individuals.
85 Budget

Kelp

Swanson
4.7
(2247 ratings)
Offers a slightly lower iodine dose (225mcg) at a significantly cheaper total price and lower price per serving (2), making it a more economical option.
89 Budget

Kelp

NOW
4.8
(23712 ratings)
Provides a lower, RDA-level iodine dose (150mcg) at a cheaper total price while maintaining the same excellent price per serving as the original, making it a cost-effective choice for general daily intake.
75 Budget

Sea-Iodine 1000 mcg

Life Extension
4.7
(25729 ratings)
While having a much higher dose (1000mcg) and higher price per serving (10), its overall total price is lower, making it a cheaper option for those specifically seeking high-dose iodine.
85 Value

Kelp

Swanson
4.7
(2247 ratings)
Offers a comparable 250 servings with a slightly lower dose (225mcg) at a significantly lower price per serving (2), providing excellent value for long-term use.
92 Value

Arctic-Kelp 225 mcg

Country Life
4.9
(7981 ratings)
Provides a massive 300 servings at the same competitive price per serving (3), offering superior longevity and overall value for a high-quality kelp supplement.
89 Value

Kelp

NOW
4.8
(23712 ratings)
Delivers 200 servings of 150mcg iodine at a very low price per serving (3), offering excellent value for those seeking a standard RDA dose from a trusted brand.
90 Performance

Potassium Plus Iodine

NOW
4.8
(7346 ratings)
Provides iodine in the form of Potassium Iodide, which offers more precise and consistent dosing compared to natural kelp, reducing variability concerns often associated with kelp supplements.
92 Performance

Arctic-Kelp 225 mcg

Country Life
4.9
(7981 ratings)
Offers a slightly lower, more universally suitable 225mcg dose from Arctic kelp, often perceived as a purer source, combined with Country Life's strong brand reputation for quality.
89 Performance

Kelp

NOW
4.8
(23712 ratings)
Delivers the recommended daily allowance (RDA) of 150mcg of iodine, which is often a more appropriate and safer daily dose for general health maintenance for many individuals.
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