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Potassium Iodide

Potassium Iodide 200 mcg Tablets to Help Fight Thyroid Issues

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Exceptional, safe source of iodine with optimal bioavailability.

  • Supports production of thyroid hormones and normal thyroid function.
  • Improves energy metabolism, nervous system function, and cognitive function.
  • Stable form of iodine (potassium iodide) with excellent bioavailability and recognized benefits.
  • Delivered in the form of iodine tablets.
  • Contains 200 mcg of elemental iodine per daily dose.

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60 tablets



60 tablets



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Potassium Iodide

No controversial excipients
No sweeteners

Potassium Iodide is a high-quality supplement containing stable iodine. Chemical element n°53 in the periodic table, iodine is an essential trace element found in small amounts, particularly in seafood.

More specifically, the Potassium Iodide supplement contains a form of iodine that is very well absorbed by the body: potassium iodide. Excellent for vitality, the thyroid, and the nervous system (1-2), this supplement can be found in our pro-energy and anti-fatigue product category.

Iodine: A Key Trace Element for the Thyroid and Health in General

Iodine plays a central role in healthy thyroidfunction. This butterfly-shaped gland located at the base of the neck produces thyroid hormones.

These hormones, which include triiodothyronine (T3) and thyroxine (T4), are crucial for the body: they control metabolism, hunger, sleep, growth, reproduction... (3) In order to produce these hormones, the thyroid needs to be supplied with iodine from the diet.

What Benefits do these Potassium Iodide Tablets Offer?

Our Potassium Iodide supplement provides 200 mcg of elemental iodine per daily dose. It benefits several aspects of our health, but more specifically, it supports normal:

  • Energy metabolism;
  • Nervous system function;
  • Cognitive function;
  • Thyroid function;
  • Thyroid hormone production;
  • And skin (4).

All these health claims are recognized by the European legislation on dietary supplements (CE n°1924/2006).

Hypothyroidism: What are the Effects of a Deficiency in Iodine?

The consequences of a lack of iodine can be serious, potentially leading to hypothyroidism, a pathological deficiency in thyroid hormones. There are a number of symptoms, whether cumulative or in isolation, which are indicative of iodine deficiency:

  • Feeling unusually tired;
  • Gaining weight;
  • Cognitive problems;
  • Problems with the menstrual cycle;
  • High cholesterol and hypertension;
  • An increase in the size of the thyroid gland (the famous goitre, which manifests in swelling at the base of the neck) (5-6).

We should also mention cretinism, a collection of physical and mental problems caused by an absence of iodine, which can occur in remote mountainous regions located a long way from the sea.

The recommended daily intake for iodine has been assessed as 100 mcg to 200 mcg per day (also expressed as µg/day). The EU specifies that iodine intake should not exceed 600 mcg per day (7), though the risk of this is very low as excess iodine is normally excreted in urine.

Which Foods are Rich in Iodine?

The best dietary sources of iodine are primarily seafood, including marine algae (such as nori), fish (such as cod), and shellfish (such as oysters).

However, it is iodized salt which is the main dietary source of iodine across the world. The practice of enriching salt with iodine to prevent deficiency has been supported by the WHO for decades, though iodized cooking salt should still be consumed in moderation given the harmful effects of salt on cardiovascular health.

Why Choose the Supplement Potassium Iodide?

This supplement is composed of potassium iodide (KI), a stable form of iodine obtained by reacting iodine with potassium hydroxide. It is notable for its exceptional bioavailability which, according to current studies, could be as high as 96.4% (8).

Potassium iodide is thus a well-known and effective compound: it is the most often used form of iodine in Europe for iodised table salt and iodine supplements. It is also used in stable iodine tablets used for protecting the thyroid against radioactive iodine released by nuclear accidents (9-10).

Potassium Iodide also offers an excellent dose, providing 200 mcg of iodine per daily tablet (11).

Supplements to Combine with Potassium Iodide

In addition to iodine, it is important to ensure you have an adequate intake of magnesium, deficiency in which is very common. This trace element helps support energy levels, the nervous system, and dental health (12). Taking our OptiMag supplement, which contains 8 highly-bioavailable forms of magnesium, is an excellent way of ensuring your daily requirements are met.

If you are experiencing a dip in energy, you can combine your iodine supplementation with ginseng, an excellent medicinal plant. Ginseng (Radix Panax) helps maintain vitality, as well as support the immune system and cognitive performance (13). Our Ginseng supplement is standardized to provide 30% ginsenosides, the plant’s most active ingredients.

Should you Buy Potassium Iodide from SuperSmart?

SuperSmart is a well-established supplier of potassium iodide 200 mcg. Designed for hyperthyroidism, potassium iodide is the thyroid support supplement backed by rigorous scientific research.

SuperSmart is an online vendor with one of the longest histories within the supplement business. Since 1996, we have been supplying cutting-edge supplements and have steadily grown our range of products to over 400. Our reputation speaks for itself and our time in the business shows that you can rely on us for quality and state-of-the-art supplementation for health and wellness.

As a brand, we make the extra effort to ensure that all our ingredients are of the finest quality by ensuring independent testing. SuperSmart believes that everyone should take control of their health and have access to cutting-edge knowledge within the health and wellness sector.

Our team works to ensure that we only supply potassium iodine tablets for sale that have been noted for their results. We research potassium iodide side effects, the impact on the human body, and the long-term impacts of potassium iodide capsules before featuring them as part of our store.

We take pride in supporting our customers in making the right choices, which is why our team is always available to answer any questions you may have about your potassium iodide purchase.

Potassium Iodide Side Effects

Side effects are always important to consider in the context of your overall health and what risks may arise from combining potassium iodide 200 mcg with any existing medication you may be taking.

Always speak to your doctor before incorporating potassium iodide tablets into your supplementary regime. They will be able to go over your medical history and discuss any potential complications that could arise, especially if you already take any prescription medication for other conditions.

Overall, when you buy potassium iodide, you can rest assured that these supplements are safe to take for the vast majority of people. However, if you experience any unexpected side effects, stop taking these dietary tablets immediately and consult your doctor.

To mitigate the risk of unpleasant side effects, always follow the instructions provided.


Do not exceed the recommended daily dose. This product is a nutritional supplement and should not be used as a substitute for a varied and balanced diet or a healthy lifestyle.


Store in a cool, dry place away from direct sunlight, heat, and humidity. Keep out of reach of children.


If you are pregnant, breastfeeding, or have any medical conditions, consult your healthcare provider before using this product.


Consult your healthcare provider before use, especially if you are taking any medications or other supplements as there may be potential interactions.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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