Best Iodine

Q: What is the typical cost per dose for Iodine?

About $0.13 per serving across 22 tracked iodine products, ranging from $0.04 for the best deals to $0.16 for premium options.

The best iodine we track, ranked by real cost-per-dose — not paid placements. Across 22 tracked options the typical dose runs $0.13 per serving.

Prices checked Jun 24, 2026

Best valueCarlyle Sea Kelp Iodine Supplement | 225mcg | 300 Tablets | Traditional…

<$0.001 per serving — the cheapest iodine dose we track.

$0.03

<$0.001/serving

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Full ranking by cost per dose

Cost-per-serving normalizes price across bottle sizes — a 60-count and a 365-count compare fairly. Top 20 of 22 shown.

#	Product	Form · dose	Servings	Price	$ / serving
1	Carlyle Sea Kelp Iodine Supplement \| 225mcg \| 300…	tablet · 225mcg	300	$0.03	<$0.001
2	NOW Supplements, Kelp 325 mcg of Natural Iodine…	capsule · 325mcg	250	$0.04	<$0.001
3	Potassium Iodide Tablets 130 mg (Pack of 2) - (120…	tablet · 130mg	120	$0.16	$0.001
4	Dr. Berg Sea Kelp Enhanced Iodine - 200 mcg of Premium…	capsule · 200mcg	90	$0.36	$0.004
5	Organic Lugol's Iodine	liquid · 3000mcg	395	$7.98	$0.02
6	NOW Supplements, Kelp 150 mcg of Natural Iodine, Easier…	tablet · 150mcg	200	$8.58	$0.04
7	Nutricost, Iodine Tablets, 325 Mcg, 240 Count	tablet · 325mcg	240	$11.95	$0.05
8	Nutricost, Kelp Tablets Iodine, 325 Mcg, 240 Count	tablet · 325mcg	240	$11.95	$0.05
9	Nascent Iodine Supplement 400 Servings	liquid · 1800mcg	400	$21.97	$0.05
10	Life Extension, Sea-Iodine, 1000 Mcg, 60 Veg Caps	capsule · 1000mcg	60	$6.00	$0.10
11	Nutricost, Iodine Capsules, 325 Mcg, 120 Count	capsule · 325mcg	120	$14.95	$0.12
12	Pharmacist Select, Potassium Iodide, 65 Mg, 100 Tabs	tablet · 65mg	100	$13.36	$0.13
13	Nutricost, Potassium Iodide, 65 Mg, 90 Caps	capsule · 65mg	90	$12.95	$0.14
14	Source Naturals, Potassium Iodide, 32.5 Mg, 240 Tabs	tablet · 32.5mg	240	$34.65	$0.14
15	Source Naturals, Potassium Iodide, 32.5 Mg, 120 Tabs	tablet · 32.5mg	120	$17.86	$0.15
16	Now Foods, Potassium Iodide Tablets, 30 mg, 60 Count	tablet · 30mg	60	$9.03	$0.15
17	Source Naturals, Potassium Iodide, 32.5 Mg, 60 Tabs	tablet · 32.5mg	60	$9.45	$0.16
18	Bio Nutrition Inc, Potassium Iodide, 65 Mg, 60 Tabs	tablet · 65mg	60	$15.37	$0.26
19	Solaray, Iodine, 500 Mcg, 30 Veg Caps	capsule · 500mcg	30	$9.89	$0.33
20	Life Extension, Potassium Iodide Tablets, 130 Mg, 14 Veg…	tablet · 130mg	14	$5.25	$0.38

Frequently asked

What is the best-value Iodine supplement?+

Carlyle Sea Kelp Iodine Supplement | 225mcg | 300 Tablets | Traditional Herb… — <$0.001 per serving ($0.03 for 300 servings), the lowest cost-per-dose iodine in our Amazon US catalog as of June 2026.

What is the typical cost per dose for Iodine?+

About $0.13 per serving across 22 tracked iodine products, ranging from $0.04 for the best deals to $0.16 for premium options.