Best Inositol

The best inositol we track, ranked by real cost-per-dose — not paid placements. Across 30 tracked options the typical dose runs $0.16 per serving.

Prices checked Jun 23, 2026

Best valueHealth Thru Nutrition Inositol Powder – 500g Pure Powder as Myo-Inositol…

$0.04 per serving — the cheapest inositol dose we track.

$19.95

$0.04/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 30 shown.

#	Product	Form · dose	Servings	Price	$ / serving	$ / 2,000 mg
1	Health Thru Nutrition Inositol Powder – 500g Pure Powder…	powder · 1000mg	500	$19.95	$0.04	$0.08
2	Nutricost Inositol Capsules 500mg	capsule · 500mg	240	$16.95	$0.07	$0.28
3	Nutricost, Inositol Capsules, 500 Mg, 240 Count	capsule · 500mg	240	$16.95	$0.07	$0.28
4	Best Naturals Inositol 1000mg 120 Tablets - Also Called…	tablet · 1000mg	120	$9.98	$0.08	$0.17
5	Now Foods, Inositol, 500 Mg, 100 Veg Caps	capsule · 500mg	100	$9.69	$0.10	$0.39
6	Now Foods, Choline & Inositol, 500 mg, 100 Veg Caps	capsule · 500mg	100	$10.33	$0.10	$0.41
7	Amazing Nutrition, Amazing Formulas Inositol, 500 mg…	capsule · 500mg	100	$11.43	$0.11	$0.46
8	Life Extension, Inositol Caps, 1000 Mg, 360 Veg Caps	capsule · 1000mg	360	$42.75	$0.12	$0.24
9	Nutricost Myo Inositol & D-Chiro Inositol for Women…	capsule · 2000mg	120	$14.95	$0.12	$0.12
10	Myo-Inositol & D-Chiro Inositol Supplement For Women…	capsule · 2050mg	120	$14.95	$0.12	$0.12
11	Source Naturals, Inositol And Choline, 800 Mg, 100 Tabs	tablet · 800mg	100	$13.29	$0.13	$0.33
12	Solgar, Inositol, 500 mg, 100 Veg Caps	capsule · 500mg	100	$13.49	$0.13	$0.54
13	Jarrow Formulas® Inositol 750 mg	capsule · 750mg	100	$13.99	$0.14	$0.37
14	Source Naturals, Inositol And Choline, 800 Mg, 50 Tabs	tablet · 800mg	50	$7.18	$0.14	$0.36
15	Solaray, Inositol, 500 mg, 100 Caps	capsule · 500mg	100	$15.39	$0.15	$0.62
16	Solaray, Choline & Inositol, 250 mg, 100 Caps	capsule · 250mg	100	$16.49	$0.16	$1.32
17	Inositol Capsules (Myo Inositol) 1000mg Health Support…	capsule · 1000mg	60	$9.95	$0.17	$0.33
18	Zazzee Myo-Inositol Capsules	capsule · 2000mg	120	$19.97	$0.17	$0.17
19	Source Naturals, Ip-6 Inositol Hexaphosphate, 800 Mg…	tablet · 800mg	180	$34.29	$0.19	$0.48
20	Source Naturals, Ip-6 Inositol Hexaphosphate, 800 Mg, 90…	tablet · 800mg	90	$17.86	$0.20	$0.50

Frequently asked

What is the best-value Inositol supplement?+

Health Thru Nutrition Inositol Powder – 500g Pure Powder as Myo-Inositol | 1 — $0.04 per serving ($19.95 for 500 servings), the lowest cost-per-dose inositol in our Amazon US catalog as of June 2026.

What is the typical cost per dose for Inositol?+

About $0.16 per serving across 30 tracked inositol products, ranging from $0.12 for the best deals to $0.22 for premium options.

What's the cheapest effective Inositol?+

To reach the commonly-studied 2,000 mg/day dose, Health Thru Nutrition Inositol Powder – 500g Pure Powder as… is the best value at $0.08 per day — cheaper than bottles that look low-priced per serving but are underdosed.