Iodine
Worth a lookShows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Market size
Incredible$2.9M$2.9M/yr · 1.7M searches
Conversion
Great11.3%search→purchase rate — share of searches ending in a sale
Brand share
Great55%top-5 brand share — no brand owns this niche
Avg price
Great$15.08avg listing price — sweet spot $15–$100
Price range
Good$4.10–$38.43cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Review moat
Bad4,801.68avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-10.8%90-day search growth — must beat 0% to launch
Is iodine profitable on Amazon?
According to Flapen's Amazon United States niche tracking, iodine is a $2.9M/yr Amazon United States market (1.7M searches/yr). The top 5 brands hold 55% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 64/100.
Data updated Jul 18, 2026 · scored weekly · How we score niches
iodine market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 150K–200K
- avg 5,000–6,000/product
- Revenue / yr
- $2.3M–$3.0M
- units × avg price
- Conversion rate
- 11.3%
- Avg BSR
- #234
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 86%
- Out of stock
- 0.0%
- Avg brand age
- 87 months
- Avg seller age
- 161 days
Competition: brands, sellers & click share
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
23 falling
Sellers
589
Top-5 brand share
55%
Top 20: 97%
Top-5 click share
50%
Top 20: 92%
Open market
40%
- Amazon Basics17%
- Earth Harmony Naturals12%
- J. CROW'S9%
- MARYRUTH'S8%
- Pure Encapsulations8%
- Life Extension5%
iodine demand & seasonality
Weekly Amazon search volume, last 104 weeks — -10.8% search growth over the last 90 days.Peak months: Oct, Nov · busiest ÷ quietest = 2.0×
Top iodine search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- iodine719K/yr
- iodine supplement469K/yr
- iodine liquid313K/yr
- yodo77K/yr
- idione25K/yr
- iodo16K/yr
- iodine supplements12K/yr
- iodine supplements for women11K/yr
- lodine7K/yr
- pure iodine7K/yr
Top iodine products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Organic Lugols Iodine Iodine and Potassium Iodide 2% Solution 3000 mcg - Liquid Supplement Drops for Thyroid Support for Women & Men Metabolism Health Detox Boost - Non-GMO 395 Servings (2 Oz)
Earth Harmony Naturals$16.874.6★5,032 rev
Amazon Basics First Aid Antiseptic 10% Povidone Iodine Solution for Wound Cleaner and Infection Protection Unflavored 8 fl oz 1-Pack (Previously Solimo)
Amazon Basics$7.884.7★12,938 rev
J.CROWS Lugols Solution of Iodine 2% 2 oz (1 Bottle) Premium Iodine & Potassium Iodide Liquid Gluten & Alcohol-Free Natural Brine Extract No Expiration - 1200 Drops
J. CROW'S$16.914.6★17,226 rev
MaryRuth Organics Iodine Liquid Drops | Potassium Iodide | 1 Year Supply | 450 Servings | Thyroid Health | USDA Organic| Vegan | Non-GMO | Gluten Free | 1 Fl Oz
MARYRUTH'S$18.314.6★14,338 rev
Pure Encapsulations Iodine - Supplement to Support The Thyroid & Help Maintain Healthy Cellular Metabolism* - with Premium Potassium Iodide - 120 Capsules
Pure Encapsulations$19.984.7★2,763 rev
Newest
by launch date
A+Health Povidone Iodine 10% First Aid Antiseptic 8 Fluid Ounces Topical Solution USP Helps Prevent Infection in Minor Cuts Scraps and Burns Wound Care Made in USA Wound Care
A+Health$8.59157 rev
FrontLine Povidone Iodine Swabs 10% More Iodine Antiseptic Solution Cotton Swabsticks for Wound Care Nasal Cleansing First Aid & Medical Supplies Individually Wrapped Box of 50
FRONTLINE$6.171,743 rev
LIQUIDHEALTH USDA Organic Nascent Iodine Liquid Drops Pure Iodine Supplement for Thyroid & Immune Support Energy Supplement - Made in USA Vegan Colorless Tasteless Tincture (2 oz)
LIQUIDHEALTH$13.771,109 rev
Clean Nutra Selenium 300mcg Iodine 500mcg Thyroid Support for Women & Men | L Tyrosine 500mg Ashwagandha Supplement Bladderwrack Turmeric Kelp Schisandra Zinc Pills Capsule Supplements
Clean Nutraceuticals$25.453,383 rev
Organic Iodine Supplement from Sea Vegetable Complex Whole Food & Raw Form - Iodine Plus Trace Mineral Complex Contains Purest Icelandic Sea Kelp Irish Moss & Bladderwrack (250 mcg)
Triquetra Health$17.781,891 rev
Trending
90-day click momentum
Zazzee USDA Organic Kelp Iodine 30:1 Extract 300 mcg per Capsule 120 Vegan Capsules 4 Month Supply Ocean-Harvested Norwegian Kelp Standardized to 1% Iodine for Exact Dosage Thyroid Support
Zazzee$19.324.7★
A+Health Povidone Iodine 10% First Aid Antiseptic 8 Fluid Ounces Topical Solution USP Helps Prevent Infection in Minor Cuts Scraps and Burns Wound Care Made in USA Wound Care
A+Health$8.594.9★
Dynarex Povidone-Iodine Prep Solution Antiseptic Solution for Skin and Mucosa Ideal for Surgical Site Preparation Contains Povidone Iodine 10% 4 fl. oz. 1 Bottle
Dynarex$5.634.7★
365 by Whole Foods Market Liquid Iodine with Kelp 2 OZ
365 by Whole Foods Market$7.134.6★
LIQUIDHEALTH USDA Organic Nascent Iodine Liquid Drops Pure Iodine Supplement for Thyroid & Immune Support Energy Supplement - Made in USA Vegan Colorless Tasteless Tincture (2 oz)
LIQUIDHEALTH$13.774.6★
What reviews say buyers love and hate about iodine
What buyers praise and complain about, mined from review topics.What buyers love
“It is a quality capsule”
“As advertised”
“Good price”
“Easy to Take”
“effective”
“I use it to prevent thyroid issues”
“it helped me in the vitamin supplement”
“No weird taste or smell”
“seems to help me with energy”
“Simple, effective ingredients”
What buyers complain about
“Gross taste”
“Dosing Lugols iodine can be rather tricky”
“Too small”
“So an undeclared ingredient”
“This will not work correctly”
“A little expensive”
“heartburn got to me”
“Its really dark in colour”
“There appears to be a lack of quality control”
“Clear, probably diluted”
Top return reasons
Common iodine questions
- Is iodine profitable to sell on Amazon United States?
- The niche generates $2.9M/yr across 28 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -10.8%. Flapen's verdict: Worth a look (64/100).
- How competitive is the iodine niche?
- 23 brands and 589 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 55% of demand.
- What do buyers complain about in iodine?
- Top complaints mined from reviews: Taste-Overall, Dosage, Size-Overall. The return rate is 0.1%.
- When does demand for iodine peak?
- Demand peaks in Oct–Nov; the busiest month runs 2.0× the quietest.
- What does it cost to enter the iodine niche?
- Listings span $4.10–$38.43; the average listing price is $15.08 (sweet spot $15–$100). The average incumbent carries 4,802 reviews — the moat a new listing must climb.