Product Image

Thyroid Care

Terry Naturally

4.7
(703 ratings)
Tyrosine 400 mg
Iodine 30000 mcg
Product Image
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: 60 Capsule(s)Servings size: 1 Capsule(s) (30 servings)
Selected goals:
Other goals:
General Health
Energy
Brain Health
Mental Focus
Mood Support

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.
Report analysis
$19.96($0.66 per serving)
iHerb
$ 19.96
Vitacost
$ 19.96
Daily Vita
$ 19.96
Amazon
$ 19.96
Report prices

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.
89 Value

Arctic-Kelp 225 mcg

Country Life
4.9
(7981 ratings)
Provides a safe and effective dose of iodine (225mcg) from natural kelp at an exceptionally low cost per serving. This is an excellent value option for individuals looking to address their iodine intake responsibly, without the extreme and potentially harmful levels of the original product.
87 Value

Sea-Iodine 1000 mcg

Life Extension
4.7
(25729 ratings)
Delivers a robust yet safe dose of iodine (1000mcg), which is within the tolerable upper intake level, unlike the original product. Life Extension is a reputable brand, and this offers concentrated iodine support at a good value for those needing higher levels.
89 Value

Kelp

NOW
4.8
(23712 ratings)
Offers a standard, safe daily dose of iodine (150mcg) from organic kelp at a very low price per serving. This product provides excellent foundational iodine support for thyroid health in a natural and cost-effective way, without any of the risks of the original product.
95 Performance

Thyroid Support Complex

Pure Encapsulations
4.6
(134 ratings)
This is a significantly superior alternative, providing a comprehensive blend of L-Tyrosine (500mg), a safe and effective dose of iodine (150mcg), selenium, zinc, and adaptogenic herbs like Ashwagandha. It offers holistic thyroid support without the extreme and potentially harmful iodine levels found in the original product. Pure Encapsulations is known for high quality and purity.
92 Performance

Thyroid Essentials

Swanson
4.7
(536 ratings)
Offers a balanced and safe thyroid support formula that includes L-Tyrosine (150mg), a responsible dose of iodine (100mcg), selenium, zinc, and B vitamins. This formulation addresses multiple aspects of thyroid health and metabolism in a well-rounded and safe manner, unlike the original's risky high iodine.
88 Performance

Emotional Balance Support

Thorne
4.8
(325 ratings)
While broader in scope, this product aligns with the original's goals of 'Brain Health, Mental Focus, Mood Support' by offering L-Tyrosine (200mg) and a safe iodine dose (68mcg), alongside beneficial ingredients like Rhodiola and 5-HTP. Thorne is a premium brand known for high-quality, research-backed formulations, making it a much safer and more effective choice for mental well-being with some thyroid support.
85 Budget

Best L-Tyrosine 500 mg

Doctor's Best
4.7
(4789 ratings)
This product provides a highly effective dose of L-Tyrosine (500mg) at a significantly lower cost per serving compared to the original. While it doesn't include iodine, it safely addresses the L-Tyrosine component of the original formula, which is crucial for brain health and thyroid hormone production.
90 Budget

Kelp

Swanson
4.7
(2247 ratings)
Offers a safe and bioavailable dose of iodine (225mcg from Atlantic Kelp) at an exceptionally low price per serving. This alternative directly addresses the iodine component of the original product but at a responsible, non-toxic level, which is a major improvement.
80 Budget

L-Tyrosine 500 mg

NOW
4.7
(41408 ratings)
A well-regarded brand offering a good dose of L-Tyrosine (500mg) at a considerably lower price per serving. This is a practical and safer choice for individuals primarily seeking L-Tyrosine support for cognitive function and thyroid health.
89 Value

Arctic-Kelp 225 mcg

Country Life
4.9
(7981 ratings)
Provides a safe and effective dose of iodine (225mcg) from natural kelp at an exceptionally low cost per serving. This is an excellent value option for individuals looking to address their iodine intake responsibly, without the extreme and potentially harmful levels of the original product.
87 Value

Sea-Iodine 1000 mcg

Life Extension
4.7
(25729 ratings)
Delivers a robust yet safe dose of iodine (1000mcg), which is within the tolerable upper intake level, unlike the original product. Life Extension is a reputable brand, and this offers concentrated iodine support at a good value for those needing higher levels.
89 Value

Kelp

NOW
4.8
(23712 ratings)
Offers a standard, safe daily dose of iodine (150mcg) from organic kelp at a very low price per serving. This product provides excellent foundational iodine support for thyroid health in a natural and cost-effective way, without any of the risks of the original product.
95 Performance

Thyroid Support Complex

Pure Encapsulations
4.6
(134 ratings)
This is a significantly superior alternative, providing a comprehensive blend of L-Tyrosine (500mg), a safe and effective dose of iodine (150mcg), selenium, zinc, and adaptogenic herbs like Ashwagandha. It offers holistic thyroid support without the extreme and potentially harmful iodine levels found in the original product. Pure Encapsulations is known for high quality and purity.
92 Performance

Thyroid Essentials

Swanson
4.7
(536 ratings)
Offers a balanced and safe thyroid support formula that includes L-Tyrosine (150mg), a responsible dose of iodine (100mcg), selenium, zinc, and B vitamins. This formulation addresses multiple aspects of thyroid health and metabolism in a well-rounded and safe manner, unlike the original's risky high iodine.
88 Performance

Emotional Balance Support

Thorne
4.8
(325 ratings)
While broader in scope, this product aligns with the original's goals of 'Brain Health, Mental Focus, Mood Support' by offering L-Tyrosine (200mg) and a safe iodine dose (68mcg), alongside beneficial ingredients like Rhodiola and 5-HTP. Thorne is a premium brand known for high-quality, research-backed formulations, making it a much safer and more effective choice for mental well-being with some thyroid support.
Report alternatives