Page 2 - Reviews - Swanson Vitamins, Thyroid Essentials, 90 Capsules - iHerb
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100% authenticOur products are sourced directly from brands or authorised distributors.Show more
4.7
Based on 710 ratings
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What customers say
Customer reviews (184)
Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding food supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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English (UK)
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BACK-DOOR
Gold
Posted on 19/10/2025
United Arab Emirates
689
0
0
76
Verified Purchase
Excellent Quality, Fast Delivery & Perfect Packaging! I’m extremely satisfied with this product from iHerb! The quality is absolutely amazing — you can really feel the difference compared to other brands. The packaging was neat, safe, and well-sealed, ensuring the product arrived in perfect condition. Shipping was super fast and reliable, even faster than I expected! Everything came fresh, authentic, and exactly as described on the website. I also appreciate how iHerb always delivers genuine products with great expiration dates and professional packaging. Highly recommend this item to anyone looking for top quality, great value, and trusted delivery service. I’ll definitely order again soon!
Auto-translated from English
iHerb Customer
Silver
Posted on 15/10/2025
Ukraine
121
0
0
10
Excellent quality
Verified Purchase
A beneficial complex for maintaining thyroid health and supporting a healthy nervous system. This supplement provides complete thyroid nutrition thanks to the natural ingredient tropical mint, a beneficial herb. It also contains zinc, copper, iodine, and B vitamins for support. I take 1 capsule twice daily with meals and feel energized throughout the day. The packaging is large.
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iHerb Customer
Silver
Posted on 6/10/2025
China
219
0
0
13
Verified Purchase
I have to buy a lot of things every month. If I evaluate them one by one, I will be very frustrated, so I made a special template. When you see this paragraph, it means that I am very satisfied with this product. Later buyers can buy it with confidence. Of course, I am not an irresponsible buyer. If the product is not good, I will also spend some time to comment on it.
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iHerbCustomer
Gold
Posted on 7/09/2026
Ukraine
1,385
0
0
284
Wow
Verified Purchase
A chic complex, I recommend it, the quality is top notch, the size is comfortable, the packaging is too
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Roman
Gold
Posted on 3/09/2026
Kazakhstan
636
0
0
80
Thyroid complex
Verified Purchase
A good complex for supporting the thyroid gland, decent composition and working ingredients
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iHerbCustomer
Posted on 12/11/2025
South Korea
93
3
1
8
Actually, my thyroid is not good.
Verified Purchase
I actually had hypothyroidism, and this is one of the nutritional supplements I've been taking consistently since I recovered to help manage it. At first, I took the iodine, choline, and seaweed separately, but I think this alone is more or less enough, so I've been taking it alone. The size of the pill and the swallowing are fine. The ingredients seem to be good.
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iHerbCustomer
Gold
Posted on 17/10/2025
Ukraine
695
0
0
98
Verified Purchase
The supplement contains nutrients such as iodine and tyrosine, which are necessary for the maintenance of the thyroid gland. These components help in the production of thyroid hormones, which regulate metabolism, cell growth and nervous system function. The main active ingredients required for the synthesis of thyroid hormones. Thyroid hormones play a key role in the regulation of metabolism. Thyroid hormones are important for the growth and reproduction of cells. The supplement supports the normal functioning of the nervous system. The complex is designed to provide optimal nutrition to the thyroid gland with the help of specialized ingredients.
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iHerbCustomer
Posted on 11/11/2025
Singapore
46
0
3
8
Verified Purchase
I was looking for some B group vitamins and was impressed by the formula of this supplement's formula, which beside the B vitamins, formulated with the iodine, trace minerals, etc.... A good product not only provide for Thyroid support and for my B vitamins support as well.
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Asmaa20rs
Gold
Posted on 7/11/2025
Saudi Arabia
401
0
7
199
Verified Purchase
The quality is excellent, and its ingredients include various vitamins that support the thyroid gland. Its effectiveness and benefits are excellent. I took it along with a nutritional program and diet, and it was very beneficial, praise be to God.
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iHerb Customer
Silver
Posted on 16/10/2025
Ukraine
101
0
1
15
Thyroid
Verified Purchase
The thyroid gland needs not only iodine for normal functioning, but also cofactors - that is, vitamins and trace elements, without which the hormones T3 and T4 cannot be formed or work properly. ✅ The main cofactors for the thyroid gland: Selenium (Se) Necessary for the conversion of T4 → active T3. Protects gland cells from oxidative stress. Recommended for autoimmune thyroiditis (Hashimoto). 💊 Dose: 100–200 mcg/day. Zinc (Zn) Participates in the synthesis of thyroid hormones. Supports immunity and skin in hypothyroidism. 💊 Dose: 15–30 mg/day. Iodine (I) The main building material for T3 and T4. It is important not to exceed the dose, especially in autoimmune processes. 💊 Dose: 100–200 mcg/day (depending on need). Iron (Fe) Without it, the enzyme thyroperoxidase (TPO) cannot work. Iron deficiency → inhibits the production of thyroid hormones. 💊 Dose: individually, after ferritin analysis (optimum 60–100 ng/ml). Magnesium (Mg) Necessary for the activation of enzymes in the thyroid gland. Helps with fatigue, irritability, spasms. 💊 Dose: 200–400 mg/day (better — glycinate or citrate). Vitamin D3 Supports immune balance, especially in autoimmune processes. Optimal blood level: 50–80 ng/ml. B vitamins (especially B2, B3, B6, B12) Help in the synthesis of thyroid hormones. Support the nervous system and energy. Vitamin A (retinol) Necessary for the conversion of T4 → T3. Especially important for dry skin, hair loss and poor vision. ⚠️ Important: Excess iodine without selenium can worsen the condition of Hashimoto's. It is best to take it comprehensively, in the form of a thyroid support program (for example: iodine + selenium + zinc + magnesium + D3 + B-complex). It is always good to do tests before starting: TSH, fT4, fT3, AT-TPO, ferritin, vitamin D. Quality, size and ingredients are at the height
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