Best Iodine Supplements | Frequently Asked Questions

Iodine is a mineral that is found in soil and water. It is essential for human health, and plays a role in the production of thyroid hormones.

A deficiency in iodine can lead to goiter, hypothyroidism, and other thyroid gland problems.

Worldwide, iodine deficiency disorders affect about two billion people and is the leading preventable cause of intellectual and developmental disabilities.

Luckily, it is possible to get enough iodine from food sources, but some people may need dietary supplements.

If you are looking for the best supplements for iodine, look no further! In this blog post, we will discuss the top 7 supplements for iodine.

Please keep in mind supplements are lightly regulated by the FDA. Their stated claims have no guarantee. They aren’t cures or treatments for any diseases.

While iodine supplements can help produce thyroid hormones, these supplements are definitely not meant for thyroid cancer. Please check with your doctor before starting any supplement program.

Please note we include items that we trust will be useful to our visitors. If you click one of the links on our site, we may get a commission.

Best Iodine Supplements

1. Best for Easy Fast Delivery – Mary Ruth
2. Best for Quality – Peak Performance
3. Best Overall – Healths Harmony
4. Best for Largest Supply in Reserve – Pure Formulas
5. Best for Highest Dose of Iodine – Life Extension
6. Best for Price Per Serving – Nature’s Way
7. Great Blend with Iodine – Botanic Choice

1 – Best for Easy Fast Delivery – Mary Ruth

• Price = $17.96
• # of Servings = 450
• Price per Serving = $0.03
• Product Reviews = 4.6/5 (9,158 reviews)
• Serving Size = 0.07ml
• Taste / Absorption = Unflavored
• Labeled Effect = Plays an important role in metabolism, stimulating the immune system and moderating the central nervous system
• Food Allergens = None
• Pros = very low price per serving, has more mg per serving than others, vegan
• Cons = doesn’t contain other vitamins, herbs or minerals

About Nascent Iodine Liquid Drops

Iodine is a critical element for proper functioning in the body, yet it’s not naturally produced by the body.

That’s why it’s critical to have enough iodine in your diet, especially if you’re pregnant or nursing.

Nascent Iodine Liquid Drops helps you get your daily dose of iodine quickly and painlessly.

Simply add a few drops to your favorite beverage and you’re ready to go!

Plus this supplement has a very competitive price per serving, and each bottle will last over 1 year.

Made By Mary Ruth

Located in Los Angeles, Mary Ruth emphasizes wholesome, vegan multivitamins the whole family can take. According to ReviewMeta.com, Mary Ruth has a 4.3/5 average adjusted rating 1,905 verified reviews. They are working on getting all products USDA Organic and Kosher Certified.

• Revenue = less than $5 million
• Mission = Formulate a wholesome multivitamin, with vegan, non-GMO ingredients, that the entire family can take
• Third Party Certifications = USDA Organic Certification for most products, Vegan
• Third Party Reviews = 4.3/5 average adjusted rating 1,905 verified reviews

2 – Best for Quality – Peak Performance

• Price = $18.95
• # of Servings = 60
• Price per Serving = $0.32
• Product Reviews = 4.5/5 (2,216 reviews)
• Serving Size = 1 vegetarian capsule
• Taste / Absorption = Unflavored
• Labeled Effect = Thyroid support, immune boost, metabolism
• Food Allergens = None
• Pros = Manufactured with highest quality of certifications, made from sea kelp, 1:1 match program
• Cons = Less mg per serving than others, doesn’t contain other vitamins, herbs or minerals

About Raw Whole Food Iodine

Made with raw organic kelp, Peak Performance’s Raw Whole Food Iodine provides your body with the iodine it needs for thyroid support, hormonal balance, and immune defense.

100% of your daily vitamin needs for iodine are met with this supplement, as recommended by Health Canada.

There are no fillers and this supplement is sourced with organic plant material.

Plus for every bottle that you purchase, Peak Performance and Vitamin Angels will supply a child at risk of malnutrition with a 1 year supply of multivitamins.

Made By Peak Performance

According to ReviewMeta.com, Peak Performance gets a 4.3/5 average adjusted rating 1,944 verified reviews. We couldn’t find much more financial information about Peak Performance.

• Mission = creating the absolute highest quality products
• Third Party Reviews = 4.3/5 average adjusted rating 1,944 verified reviews

3 – Best Overall – Healths Harmony

• Price = $18.02
• # of Servings = 60
• Price per Serving = $0.30
• Product Reviews = 4.3/5 (6,356 reviews)
• Serving Size = 2 capsules
• Taste / Absorption = Unflavored
• Labeled Effect = Energize your thyroid
• Food Allergens = None
• Pros = made in the USA, high quality blend with many nutrients
• Cons = contains less iodine than other similar supplements

About Thyroid Support

Iodine is a mineral that is essential for thyroid health, and an underactive thyroid can be linked to a number of health problems, such as fatigue.

Thyroid Support, by Healths Harmony, contains 14 key ingredients for a healthy thyroid, including vitamin B12, l-tyrosine, iodine, ashwagandha root and more.

We use cayenne pepper powder to improve bioavailability, in addition to minerals such as zinc, copper, magnesium, manganese, and selenium, as well as herbs like bladderwrack (known to assist with the formation of thyroid hormones).

While this supplement contains less iodine than other supplements for iodine, it more than compensates with it’s high quality blend of vitamins, minerals and herbs.

With so many vitamins, ingredients and other high quality nutrients, this is our top choice overall.

Made By Healths Harmony (owned by USA Supplements)

Located in Wyoming and emphasize customer service, quality and affordability. Owned by USA Supplements. According to ReviewMeta.com, Healths Harmony gets a 4.2/5 average adjusted rating 1,594 verified reviews. Doesn’t have as much info in comparison to other companies.

• Start = 2014
• Revenue = less than $5 million
• Mission = Supply clients with the highest quality natural healthy living products
• Third Party Certifications = cGMP
• Third Party Reviews = 4.2/5 average adjusted rating 1,594 verified reviews

4 – Best for Largest Supply in Reserve – Pure Formulas

• Price = $54.89
• # of Servings = 180
• Price per Serving = $0.30
• Product Reviews = 4.9/5 (513 reviews)
• Serving Size = 1 tablet
• Taste / Absorption = Unflavored
• Labeled Effect = Support the thyroid
• Food Allergens = None
• Pros = High quality iodine supplement, large supply will last half year
• Cons = doesn’t contain other vitamins, herbs or minerals

About Iodoral

This product’s just one capsule gives you the same amount of iodine as those who live in Japan.

Because the Japanese diet incorporates more sea vegetables than most other countries’ diets, they have greater iodine concentrations in their bodies than people from other countries.

But what about too high of iodine levels?

Iodine was one of the last nutrients to be included in the RDA system, and its usefulness was based on the amount required to prevent severe shortages, rather than optimal health.

So with Iodoral made by Optimox (and other iodine supplements) you get the extra iodine you may need, especially if you’re pregnant.

This is a great choice if you’re looking for a pure Iodine supplement with a large supply that will last you half a year.

Made By Optimox Corporation

Located in Utah and founded over 40 years ago in 1978. Emphasizes research, testing and quality. According to ReviewMeta.com, Optimox gets a 4.5/5 average adjusted rating 795 verified reviews. Specializes in Iodine supplements.

• Start = 1978
• Revenue = Less than $5 million
• Mission = Better health through nutrition
• Third Party Certifications = cGMP
• Third Party Reviews = 4.5/5 average adjusted rating 795 verified reviews

5 – Best for Highest Dose of Iodine – Life Extension

• Price = $18.00
• # of Servings = 30
• Price per Serving = $0.30
• Product Reviews = 4.9/5 (285 reviews)
• Serving Size = 1 capsule
• Taste / Absorption = Unflavored
• Labeled Effect = Support bone, brain, thyroid and vascular health
• Food Allergens = None, very safe
• Pros = contains 3 types of vitamin K and vitamin D, along with the highest dose of iodine with 1000 mg of iodine
• Cons = more iodine not necessarily better

About Vitamins D and K with Sea Iodine

This supplement includes vitamins D and K, as well as sea iodine.

Vitamin D is essential for brain health, while vitamin K aids in the maintenance of calcium equilibrium in the body—both of which are important for aging individuals.

Iodine, of course, is also important for the production of thyroid hormones, which help to regulate your metabolic rate.

The unique feature of this supplement however is the 1000 mg of iodine per serving which is the highest we’ve seen.

However please know that more iodine is not necessarily better. For more info see FAQs below.

Made By Life Extension

Life Extension began in 1980 and is still going 40 years later. In 2021 ConsumerLab.com voted Life Extension as #1 Rated Catalog/Internet Merchant. According to ReviewMeta.com, Life Extension’s average adjusted rating of 4.1/5 from 24,224 verified reviews. 

• Start = 1980
• Revenue = $168 million
• Employees = 500
• Mission = Achieve your goals with the best nutritional products that science can offer
• Third Party Certifications = GMP, Non-GMO
• Third Party Reviews = average adjusted rating of 4.1/5 from 24,224 reviews

6 – Best for Price Per Serving – Nature’s Way

• Price = $11.99
• # of Servings = 180
• Price per Serving = $0.06
• Product Reviews = 4.8/5 (92 reviews)
• Serving Size = 1 Capsule
• Taste / Absorption = Unflavored
• Labeled Effect = Supports thyroid function
• Food Allergens = None
• Pros = sustainably sourced, lowest cost per serving
• Cons = doesn’t contain other vitamins, minerals or herbs except sodium, similar to other products

About Kelp

Iodine is found in kelp, which is a form of seaweed that is high in iodine.

Kelp is a nutrient-dense superfood that supports bone, brain, thyroid, and arterial health. It’s high in vitamins D and K as well as the vital mineral iodine.

While similar to other iodine supplements sourced from kelp or seaweed, Kelp made by Nature’s Way is unique because of it’s very low price per serving – $0.06.

Made By Nature’s Way

Nature’s Way is one of the most popular supplement companies. It’s been around for decades, and according to ReviewMeta.com, has a 4.2/5 average adjusted rating from 80,981 verified reviews. 

• Start = 1969
• Revenue = $98 million
• Employees = 500
• Mission = help people everywhere live healthy lives
• Third Party Certifications = GMP, NSF, ISO, GMO Free
• Third Party Reviews = 4.2/5 average adjusted rating from 80,981 verified reviews

7 – Great Blend with Iodine – Botanic Choice

• Price = $24.99
• # of Servings = 30
• Price per Serving = $0.83
• Product Reviews = 4.7/5 (91 reviews)
• Serving Size = 2 capsules
• Taste / Absorption = Unflavored
• Labeled Effect = Supports healthy weight, energy, body temperature, mood, digestion, cardiovascular system, hair, nails, and more
• Food Allergens = None
• Pros = made of many high quality nutrients
• Cons = similar to other iodine supplement blends

About Thyroid Complex

Iodine, selenium, zinc, and copper are all essential elements for thyroid health and are in this recipe.

Thyroid Complex, made by Botanic Choice, is a high quality blend of ingredients to support thyroid health.

The only downside is it’s similar to other iodine supplement blends.

Made By Botanic Choice:

Botanic Choice started in 1910, over 100 years ago. The company is family owned and has millions of customers worldwide. They are one of the oldest supplement companies still around today. According to MetaCritic, Botanic Choice has a 3.8/5 rating with 1,496 reviews.

• Start = 112 years old, founded in 1910
• Revenue = $18 million
• Employees = 107
• Mission = dedicated to making effective natural health solutions available to all
• Third Party Certifications = GMP
• Third Party Reviews = 3.8/5 with 1,496 review

What factors do we use to rank supplements?

1 – Price: What’s the price of the supplement? What’s the cost per serving?

• At Eating Enlightenment we value quality over price. However, all else being equal, then price comes into consideration. 

2 – Reviews: How many reviews for each product? What’s the average rating? How many third party reviews?

• We strongly believe in third party reviews. Many supplement companies list positive reviews on their website, but third party reviews include negative comments. We always go with third party reviews.

3 – Reputation: How reputable is the brand behind the supplement? How long has the brand been around? What’s their mission? 

• We believe that a company’s intention is highly important and should be one of your top purchasing decision factors.

4 – Taste / Absorption = What’s the taste? How quickly does your body absorb the supplement? Do reviews mention any negative side effects like an upset stomach?

5 – Perceived Therapeutic Effect = What beneficial effects or feelings does this supplement promote?

6 – Food Allergens = Does the company provide allergen info?

7 – Science / Certifications: Does the company list transparent scientific studies on their website? Do third party certifications test the company’s supplement for quality control? How many certifications does the company have?

8 – Pros/Cons: What are the pros and cons of each supplement? How is the supplement unique? For what situations is this supplement best?

Who benefits most from iodine supplements?

Pregnant women and small children need more iodine than other groups, so they may be at risk for iodine deficiency if they don’t eat enough iodine-rich foods or take a supplement. Women who are breastfeeding also need more iodine.

Who may not benefit from iodine supplements?

People with autoimmune conditions, such as Hashimoto’s disease, Graves’ disease, and rheumatoid arthritis may want to limit their iodine intake or avoid it altogether. Iodine can also be problematic for people with certain kidney disorders. If you have any concerns about whether you should take an iodine supplement, speak with a physician.

Risks, side effects and other precautions

Many iodine supplements are best taken with food. If you have trouble swallowing pills, there are liquid iodine supplements and powder forms available.

Food sources of iodine

Iodine is found in high quantities in animal meats, sea veggies, and certain fortified foods including breads, grains, and milk.

• Chicken
• Eggs
• Dairy
• Fish
• Seaweed

Table salt is mixed with a few grams of various salts of the element iodine to make iodized salt (also known as iodized salt). The ingestion of iodine prevents iodine deficiency.

Iodine dosages

Iodine supplements are best taken with food. If you have trouble swallowing pills, there are liquid and powder forms of iodine supplements available.

The recommended daily allowance (RDA) for iodine is 150 micrograms for most adults. However, the recommended daily iodine intake for different groups is as follows:

• Pregnant women: 220 micrograms/day
• Breastfeeding women: 290 micrograms/day
• Children aged 0-12 months: 110 micrograms/day
• Children aged 13-24 months: 130 micrograms/day

How soon after taking iodine supplements will I feel better?

It usually takes a few days to a week for the body to start absorbing iodine. However, it can take up to a month for levels to return to normal in people with very low iodine levels. It’s best to speak with your physician about how often you should be tested and what your ideal iodine level is.

Next steps

First of all, determine first if you have an iodine deficiency.

If you do, try adding more foods with iodine.

Finally, consult with your doctor about iodine supplementation.

If you are a total beginner to supplements be sure to read our ultimate guide to supplements. Or, if you can search a database of supplement reviews here,