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Thyroid Care

Terry Naturally

4.7
(518 ratings)
Iodine 30000 mcg
Tyrosine 400 mg
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Score 5.0

Terry Naturally Thyroid Care features L-Tyrosine for cognitive and thyroid support, but contains an alarmingly high dose of iodine (30,000 mcg), which significantly surpasses safe intake levels and carries substantial risks for thyroid dysfunction and overall health.

Quantity: 120 Capsule(s)Servings size: 1 Capsule(s) (60 servings)
Selected goals:
Other goals:
General Health
Energy
Brain Health
Productivity Boost
Metabolism Boost

Score 5.0

Terry Naturally Thyroid Care features L-Tyrosine for cognitive and thyroid support, but contains an alarmingly high dose of iodine (30,000 mcg), which significantly surpasses safe intake levels and carries substantial risks for thyroid dysfunction and overall health.

Analysis

This 'Thyroid Care' product combines L-Tyrosine (400mg) with a profoundly excessive dose of iodine (30,000 mcg). While L-Tyrosine is a valuable amino acid for supporting thyroid hormone synthesis and neurotransmitter production, the iodine content is the primary and most concerning aspect. The Recommended Dietary Allowance (RDA) for iodine is 150 mcg for adults, and the Tolerable Upper Intake Level (UL) is 1,100 mcg. Consuming 30 mg of iodine daily is nearly 30 times the UL, a level widely considered dangerous by mainstream nutritionists and medical professionals. Such high doses can lead to severe thyroid imbalances, including both hyperthyroidism (Jod-Basedow phenomenon) and hypothyroidism (Wolff-Chaikoff effect), particularly in susceptible individuals. Online reviews may vary, but the scientific evidence strongly cautions against iodine intake at this magnitude without direct and intensive medical supervision and specific clinical indication, which is rare. The potential benefits from L-Tyrosine are overshadowed by the significant health risks posed by the iodine dosage.
Pros
  • Contains a moderate and generally beneficial dose of L-Tyrosine (400mg) which is a precursor to thyroid hormones and neurotransmitters.
Cons
  • The iodine content of 30,000 mcg (30mg) is an extremely dangerous dose, far exceeding the Tolerable Upper Intake Level (UL) by nearly 30 times.
  • High iodine intake at this level can severely disrupt normal thyroid function, potentially causing iodine-induced hyperthyroidism or hypothyroidism.
  • Poses significant risks to overall health and endocrine balance, making it unsuitable for most individuals.
  • The risk profile associated with the iodine dose overshadows any potential benefits from the L-Tyrosine.
Warnings
  • Individuals should NOT take this product without explicit medical advice and supervision from a qualified healthcare professional.
  • Those with pre-existing thyroid conditions, such as Hashimoto's or Grave's disease, are at extremely high risk of severe adverse reactions from this iodine dosage.
  • Monitor closely for symptoms of thyroid dysfunction, including rapid heartbeat, anxiety, unexplained weight changes, fatigue, or mood swings.
  • This product's iodine content is far above general health recommendations and may cause more harm than benefit.
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$25.00($0.41 per serving)
Daily Vita
$ 25.00
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$ 25.00
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Effectiveness for goals

Dosage, timing & forms

Safety & interactions

Ingredients

IngredientAmount per serving
Iodine
30000 mcg
L-Tyrosine
400 mg
Gluten Free Adults 18–50 Kosher Dairy Free Sugar Free
Report overview

Categories

The 400mg dose of L-Tyrosine is a well-established and effective quantity for supporting neurotransmitter synthesis and thyroid function, making it a valuable component of this product in terms of its standalone contribution.
While the product contains iodine, the dosage of 30,000 mcg is astronomically high and unsafe for routine supplementation, significantly exceeding therapeutic and regulatory guidelines, thus posing substantial health risks rather than simply providing a beneficial source of iodine.

Goals

L-Tyrosine is a direct precursor to critical neurotransmitters like dopamine and norepinephrine, which are essential for supporting cognitive functions, focus, and mental clarity, thus offering a direct benefit for brain health.
By aiding in the synthesis of catecholamines, L-Tyrosine can enhance mental alertness, energy levels, and sustained cognitive performance, contributing to an effective productivity boost, especially under demanding conditions.
L-Tyrosine plays a key role in the production of neurotransmitters vital for attention and concentration, making it beneficial for supporting mental focus and mitigating cognitive decline during stressful situations.
82 Value

L-Tyrosine 500 mg

Swanson
4.5
(1657 ratings)
Provides a solid dose of L-Tyrosine (500mg) from a reliable brand at a very competitive price per serving. For consumers prioritizing the amino acid component of the original product, this offers excellent value and efficacy without the risky iodine.
88 Value

Kelp 325 mcg

Nutricost
4.9
(208 ratings)
A highly cost-effective option for obtaining a safe and slightly higher dose of natural iodine (325mcg) from kelp. It offers a direct and responsible solution for iodine intake, providing great value for essential thyroid support.
81 Value

L-Tyrosine 500 mg

Jarrow Formulas
4.7
(4834 ratings)
Jarrow Formulas is a respected brand among nutritionists. This product offers a substantial 500mg dose of L-Tyrosine at a very reasonable price per serving, making it a great value for those seeking this amino acid for cognitive and thyroid support.
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Thyroid Support Complex

Pure Encapsulations
4.6
(134 ratings)
This product stands out as a superior and more responsible choice for comprehensive thyroid health. It contains L-Tyrosine (500mg), a safe and clinically appropriate dose of iodine (150mcg), and other crucial co-factors like selenium, zinc, and adaptogenic herbs. It provides a holistic approach without the extreme and potentially harmful iodine levels of the original.
92 Performance

Thyroid Essentials

Swanson
4.7
(536 ratings)
Offers a balanced approach to thyroid health with L-Tyrosine (150mg), a safe amount of iodine (100mcg), and essential minerals like selenium and zinc. This formula provides far more beneficial support than the original, with none of the risks associated with excessive iodine intake.
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Thyroid Strength

MegaFood
4.5
(854 ratings)
MegaFood is known for whole-food based supplements. This product provides L-Tyrosine (300mg) and, assuming the iodine is a safe 150mcg (likely a typo for 150mg), offers a synergistic blend of adaptogens (Ashwagandha, Holy Basil, Coleus) and minerals (Selenium, Zinc) to support overall thyroid function and stress response. It's a holistic and safe alternative.
85 Budget

Best L-Tyrosine 500 mg

Doctor's Best
4.7
(4789 ratings)
This product offers a higher dose of L-Tyrosine (500mg) at a significantly lower cost per serving compared to the original. It focuses purely on the beneficial amino acid, making it a much safer and more economical choice given the original product's problematic iodine content.
90 Budget

Kelp

Swanson
4.7
(2247 ratings)
Provides a safe, effective, and very inexpensive source of iodine (225mcg from Atlantic Kelp). It directly addresses the iodine component of the original product but at a responsible dosage, offering a better and much cheaper alternative.
89 Budget

Kelp

NOW
4.8
(23712 ratings)
An economical choice for a foundational and safe dose of iodine (150mcg) from organic kelp. It serves as a direct, safe, and significantly cheaper replacement for the iodine component of the original product, which is dangerously high.
82 Value

L-Tyrosine 500 mg

Swanson
4.5
(1657 ratings)
Provides a solid dose of L-Tyrosine (500mg) from a reliable brand at a very competitive price per serving. For consumers prioritizing the amino acid component of the original product, this offers excellent value and efficacy without the risky iodine.
88 Value

Kelp 325 mcg

Nutricost
4.9
(208 ratings)
A highly cost-effective option for obtaining a safe and slightly higher dose of natural iodine (325mcg) from kelp. It offers a direct and responsible solution for iodine intake, providing great value for essential thyroid support.
81 Value

L-Tyrosine 500 mg

Jarrow Formulas
4.7
(4834 ratings)
Jarrow Formulas is a respected brand among nutritionists. This product offers a substantial 500mg dose of L-Tyrosine at a very reasonable price per serving, making it a great value for those seeking this amino acid for cognitive and thyroid support.
95 Performance

Thyroid Support Complex

Pure Encapsulations
4.6
(134 ratings)
This product stands out as a superior and more responsible choice for comprehensive thyroid health. It contains L-Tyrosine (500mg), a safe and clinically appropriate dose of iodine (150mcg), and other crucial co-factors like selenium, zinc, and adaptogenic herbs. It provides a holistic approach without the extreme and potentially harmful iodine levels of the original.
92 Performance

Thyroid Essentials

Swanson
4.7
(536 ratings)
Offers a balanced approach to thyroid health with L-Tyrosine (150mg), a safe amount of iodine (100mcg), and essential minerals like selenium and zinc. This formula provides far more beneficial support than the original, with none of the risks associated with excessive iodine intake.
90 Performance

Thyroid Strength

MegaFood
4.5
(854 ratings)
MegaFood is known for whole-food based supplements. This product provides L-Tyrosine (300mg) and, assuming the iodine is a safe 150mcg (likely a typo for 150mg), offers a synergistic blend of adaptogens (Ashwagandha, Holy Basil, Coleus) and minerals (Selenium, Zinc) to support overall thyroid function and stress response. It's a holistic and safe alternative.
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