Best Iodine Tablets

Last Updated: May 15, 2023 @ 2:31 pm.

Iodine Tablets 101: Advice & Tips

What are iodine tablets and should you stock them in an emergency kit? 

In this article, we’ll look at iodine and the best advice on how to incorporate this mineral into a disaster preparedness kit.

First, let’s talk about what type of iodine we are referring to: potassium iodine (KI). Found in eggs, seafood and chicken, this trace mineral plays a key role in thyroid function.

The National Institutes of Health recommends 150 micrograms a day for adults, 220 micrograms a day for women who are pregnant, and 290 micrograms a day for women who are breastfeeding.

The potassium iodine we are referring to this article provides a much bigger dose of iodine—65 milligrams (not micrograms!). Yes, that is 400 times the recommended daily intake for adults.

Why type of disaster would require you to do that? 

The University of Colorado Health Center explained in a recent newsletter: 

An emergency involving potassium iodide would be a serious one: radioactive fallout from a nuclear accident or explosion.

Fallout after a nuclear accident or detonation can spread radioactive iodine (radioiodine). A thyroid gland in need of iodine will sweep radioactive iodine up, and that can cause thyroid cancer and other thyroid damage. Potassium iodine or potassium iodate, so-called “thyroid blockers,” saturate the thyroid with non-radioactive iodine and prevent radioactive iodine uptake.

The dose depends on age and is taken once every 24 hours while radiation exposure persists. The U.S. Food and Drug Administration says potassium iodide works best if taken within 3-4 hours of exposure.

Below, we’ll go over the current advice from the Center For Disease Control on potassium iodine. Here is the key takeaway: “You should only take KI on the advice of emergency management officials, public health officials, or your doctor,” says the CDC.

After researching potassium iodine, here are the tablets we would recommend you stock in an emergency kit:

More on Radiation and Potassium Iodide (KI)

This fact sheet from the Centers for Disease Control and Prevention (CDC) gives you some basic information about Radiation and Potassium Iodide (KI). It explains what you should think about before you or a family member takes KI.

What Is Radiation?

Radiation is a form of energy that is present all around us. Different types of radiation exist, some of which have more energy than others.

What Is Radioactive Contamination?

Radioactive contamination occurs when radioactive material is deposited on or in an object or a person. Radioactive materials released into the environment can cause air, water, surfaces, soil, plants, buildings, people, or animals to become contaminated. A contaminated person has radioactive materials on or inside their body.

What is KI?

Potassium iodide (also called KI) is a salt of stable (not radioactive) iodine. Stable iodine is an important chemical needed by the body to make thyroid hormones. Most of the stable iodine in our bodies comes from the food we eat. KI is stable iodine in a medicine form.

What does KI do?

If radioactive iodine is released into the air after a radiological or nuclear event it can be breathed into the lungs. In most cases, once radioactive iodine has entered the body, the thyroid gland quickly absorbs it. After it has been absorbed into the thyroid gland, radioactive iodine can then cause thyroid gland injury. Because KI acts to block radioactive iodine from being taken into the thyroid gland, it can help protect this gland from injury.

It is also important to know what KI cannot do. KI cannot protect parts of the body other than the thyroid from radioactive iodine. KI cannot protect the body from any radioactive elements other than iodine. If radioactive iodine is not present, then taking KI is not protective.

How does KI work?

The thyroid gland cannot tell the difference between stable and radioactive iodine and will absorb both. KI works by blocking radioactive iodine from entering the thyroid. When a person takes KI, the stable iodine in the medicine gets absorbed by the thyroid. There is so much stable iodine in the KI that the thyroid gland becomes “full” and cannot absorb any more iodine—either stable or radioactive—for the next 24 hours.

How well does KI work?

It is important to know that KI may not give a person 100% protection against radioactive iodine. How well KI blocks radioactive iodine depends on:

• How much time passes between contamination with radioactive iodine and taking KI (the sooner a person takes KI after being exposed to radioactive iodine, the better),
• How fast KI is absorbed into the blood, and
• The total amount of radioactive iodine to which a person is exposed.

A single dose of KI protects the thyroid gland for 24 hours. Taking a higher dose of KI, or taking KI more often than recommended, does not offer more protection and can cause severe illness or death.

Medical conditions that may make it harmful to take KI

It may be harmful for some people to take KI because of the high levels of iodine in this medicine. You should not take KI if:

• You know you are allergic to iodine (If you are unsure about this, consult your doctor. A seafood or shellfish allergy does not necessarily mean that you are allergic to iodine.) OR
• You have certain skin disorders (such as dermatitis herpetiformis or urticaria vasculitis).

When should I take KI?

After a radiological or nuclear event in the United States, local public health or emergency management officials will tell the public if there is a need to take KI or other protective actions. After an event in the US, you should follow the instructions given to you by these local authorities.

At this time, CDC does not recommend that people in the United States take Potassium Iodide (KI) or iodine supplements.

The use of non-FDA approved iodine supplements cannot be guaranteed for safety or efficacy. These products do not have an FDA-approved dosing schedule. The supplements are not necessarily manufactured using FDA-approved quality control methods. Saturated Solution of Potassium Iodide (SSKI or Lugol’s Solution) is not an FDA-approved drug.

Source: Center for Disease Control

About the Authors

Denise & Alan Fields are consumer advocates and best-selling authors. The Fields have authored 12 books with three million copies in print, including the best-selling guide to baby gear, Baby Bargains.

The Fields have been featured and quoted in the New York Times, Wall Street Journal and Los Angeles Times.

As consumer products experts, the Fields have been guests on the NBC Today Show, Good Morning America and ABC’s 20/20.

How We Pick Products To Recommend

We often turn to our readers (3 million strong!) to find products to recommend. We ask our parent readers for their favorites and consider their real-world experiences in our recommendations.

When we test a product, we always purchase it with our own monies. We do not take free samples, as we believe that compromises our independence.

We also fact check manufacturer information with our own measurements. If a maker claims a product weighs X pounds, we will weigh it to make sure. If the battery life is supposed to be six hours, we will see how it stands up in the real world.

In some cases, we will do interviews with experts in the field to get additional feedback on products.

To get hands-on time with products, we regularly meet one-on-one with gear companies and even tour manufacturing facilities. (When we do this, we pay our own travel expenses).

Why Trust Us

We’ve been rating and reviewing products for the home and families since 1994. We do extensive research, evaluating products with an eye toward quality, ease of use and affordability.

We make our living from affiliate commissions, but we always recommend what we think are the best bets for our readers (not the ones that are the most expensive). We are always looking for products that offer the best bang for the buck.

Our independence is a key reason why we have been doing this so long. As we mentioned above, when we purchase a product for hands-on testing, we do so with our own money.

Here’s another key point: we don’t take money from the brands we review. No free samples, no sponsors, no “partnerships.” Our work is 100% reader-supported!