Other compounds

Inositol

A sugar-like substance from fruit, beans and grains. Cells use it to pass on signals, for example from insulin – studied mostly for women’s hormones.

99 products from US online stores, sorted by what 2 g of inositol costs – not by the price per pack.

7.2¢Lowest cost
per 2 g inositol

Prices checked Nov 1, 2026, US
No paid placements

What does 2 g mean?

inositol per serving in most of the products we checked: 0.5–2 ginositol per serving in most of the products we checked

2 g is a fixed amount to compare by: half of the 99 products we checked have up to 1.1 g per serving, the other half more.
There’s no official daily amount for inositol.

We compare by 2 g only so products line up – it’s not a recommendation. Not medical advice.

Where products miss quality points

How the 99 products score

Very good 90+: 8
Good 75+: 91
Fair 60+: 0
Low under 60: 0

have no seal from an independent testing program: 92%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 15 whose label says “third-party tested”

The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.

We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works

Pack size

Compare packs of a similar size.

All sizesmixed99 productsSmallup to 30 × 2 g45 productsfrom $0.21Medium30–60 × 2 g23 productsfrom $0.17Large60+ × 2 g31 productsfrom 7.2¢

All sizes in one list can affect the results – big packs usually cost less per 2 g. Pick a size above to compare packs that are alike.

Cost per 2 gQualityPack price

99 products · cheapest per 2 g inositol first

Rank 1
Vitamatic
Myo-Inositol Powder Pouch
Myo-inositol · Powder
80Good qualityCountry not stated
7.2¢
per 2 g
Lowest
Pack
$17.99500 g (1.1 lb)250 servings
Inositol per serving
2 gin 2 g
Pack lasts
250 daysif you take 2 g a day
vitamaticusa.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 2
Vitamatic
Myo Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
8.8¢
per 2 g
22% more
Pack
$21.99500 g (1.1 lb)250 servings
Inositol per serving
2 gin 2 g
Pack lasts
250 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 3
Healthy Origins
Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
8.8¢
per 2 g
22% more
Pack
$19.99756 servings
Inositol per serving
0.6 g
Pack lasts
226 daysif you take 2 g a day
healthyorigins.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 4
Best Naturals
Inositol
Myo-inositol · Powder
80Good qualityCountry not stated
9.5¢
per 2 g
32% more
Pack
$21.51534 servings
Inositol per serving
0.85 g
Pack lasts
226 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 5
Best Naturals
Inositol Powder
Myo-inositol · Powder
80Good qualityMade in USA
$0.11
per 2 g
53% more
Pack
$24.99534 servings
Inositol per serving
0.85 g
Pack lasts
226 daysif you take 2 g a day
shopbestnaturals.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 6
Amazing Nutrition
Amazing Formulas Inositol Powder
Myo-inositol · Powder
80Good qualityMade in USA
$0.12
per 2 g
65% more
Pack
$26.99756 servings
Inositol per serving
0.6 g
Pack lasts
226 daysif you take 2 g a day
amazingnutrition.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 7
Nutricost
Inositol, Unflavored
Myo-inositol · Powder
85Good qualityMade in USA
$0.13
per 2 g
83% more
Pack
$29.94454 g (1 lb)454 servings
Inositol per serving
1 gin 1 g
Pack lasts
227 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 8
Nutricost
Inositol Powder
Myo-inositol · Powder
85Good qualityMade in USA
$0.13
per 2 g
83% more
Pack
$29.97454 g (1 lb)454 servings
Inositol per serving
1 gin 1 g
Pack lasts
227 daysif you take 2 g a day
nutricost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 9
Micro Ingredients
Myo & D-Chiro Inositol Powder
Myo + D-chiro (40:1) · Powder
85Good qualityCountry not stated
$0.16
per 2 g
120% more
Pack
$34.99454 g (1 lb)221 servings
Inositol per serving
2 gin 2.05 g
Pack lasts
221 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 10
Micro Ingredients
Myo & D-Chiro Inositol Powder Hormonal Balance & Ovarian Support
Myo + D-chiro (40:1) · Powder
80Good qualityCountry not stated
$0.16
per 2 g
120% more
Pack
$34.95453 g (1 lb)221 servings
Inositol per serving
2 gin 2.05 g
Pack lasts
220 daysif you take 2 g a day
microingredients.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 11
Amazing Nutrition
Inositol, 1,000 mg
Myo-inositol · Tablets
80Good qualityCountry not stated
$0.16
per 2 g
122% more
Pack
$19.99250 tablets
Inositol per serving
1 gin 1 tablet
Pack lasts
125 daysif you take 2 tablets (2 g) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 12
Amazing Nutrition
Amazing Formulas Inositol - 1000 Mg
Myo-inositol · Tablets
85Good qualityMade in USA
$0.16
per 2 g
122% more
Pack
$19.99250 tablets
Inositol per serving
1 gin 1 tablet
Pack lasts
125 daysif you take 2 tablets (2 g) a day
amazingnutrition.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 13
NOW Foods
Inositol Powder
Myo-inositol · Powder
80Good qualityPacked in USA
$0.16
per 2 g
125% more
Pack
$36.74622 servings
Inositol per serving
0.73 g
Pack lasts
227 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 14
Amazing Nutrition
Amazing Formulas Inositol - 1000 Mg
Myo-inositol · Tablets
80Good qualityMade in USA
$0.17
per 2 g
131% more
Pack
$9.99120 tablets
Inositol per serving
1 gin 1 tablet
Pack lasts
60 daysif you take 2 tablets (2 g) a day
amazingnutrition.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 15
BulkSupplements
IP6 (Inositol Hexaphosphate) Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.19
per 2 g
159% more
Pack
$69.971,250 servings
Inositol per serving
0.6 g
Pack lasts
375 daysif you take 2 g a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 16
NOW Foods
Inositol Powder
Myo-inositol · Powder
80Good qualityPacked in USA
$0.19
per 2 g
170% more
Pack
$22.04311 servings
Inositol per serving
0.73 g
Pack lasts
113 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 17
Healthy Origins
Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.21
per 2 g
195% more
Pack
$5.9994 servings
Inositol per serving
0.6 g
Pack lasts
28 daysif you take 2 g a day
healthyorigins.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 18
NOW Foods
Inositol Powder
Myo-inositol · Powder
80Good qualityPacked in USA
$0.22
per 2 g
201% more
Pack
$12.24155 servings
Inositol per serving
0.73 g
Pack lasts
56 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 19
Best Naturals
Inositol 1000 mg
Myo-inositol · Tablets
80Good qualityMade in USA
$0.22
per 2 g
201% more
Pack
$12.99120 tablets
Inositol per serving
1 gin 1 tablet
Pack lasts
60 daysif you take 2 tablets (2 g) a day
shopbestnaturals.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 20
Swanson Vitamins
Inositol Powder - 100% Pure
Myo-inositol · Powder
80Good qualityCountry not stated
$0.24
per 2 g
228% more
Pack
$26.79227 g (8 oz)38 servings
Inositol per serving
6 gin 6 g
Pack lasts
113 daysif you take 2 g a day
swansonvitamins.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 21
Life Extension
Inositol Caps, 1,000 mg
Myo-inositol · Capsules
80Good qualityMade in USA
$0.24
per 2 g
230% more
Pack
$42.75360 capsules
Inositol per serving
1 gin 1 capsule
Pack lasts
180 daysif you take 2 capsules (2 g) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 22
Swanson Vitamins
Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.24
per 2 g
238% more
Pack
$27.59227 g (8 oz)38 servings
Inositol per serving
6 gin 6 g
Pack lasts
113 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 23
Vitamatic
Myo-Inositol
Myo-inositol · Capsules
80Good qualityCountry not stated
$0.27
per 2 g
274% more
Pack
$16.15240 capsules60 servings
Inositol per serving
2 gin 4 capsules
Pack lasts
60 daysif you take 4 capsules (2 g) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 24
NOW Foods
Inositol Powder
Myo-inositol · Powder
80Good qualityPacked in USA
$0.28
per 2 g
288% more
Pack
$7.9578 servings
Inositol per serving
0.73 g
Pack lasts
28 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 25
Protocol for Life Balance
Myo-Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.28
per 2 g
291% more
Pack
$63.86454 g (1 lb)76 servings
Inositol per serving
6 gin 6 g
Pack lasts
227 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 26
Vitamatic
Myo-Inositol
Myo-inositol · Capsules
80Good qualityMade in USA
$0.28
per 2 g
294% more
Pack
$16.99240 capsules60 servings
Inositol per serving
2 gin 4 capsules
Pack lasts
60 daysif you take 4 capsules (2 g) a day
vitamaticusa.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 27
Source Naturals
Pure Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.29
per 2 g
309% more
Pack
$64.24520 servings
Inositol per serving
0.84 g
Pack lasts
218 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 28
Kirkman Labs
Inositol Pure Soluble Powder - Hypoallergenic
Myo-inositol · Powder
80Good qualityCountry not stated
$0.31
per 2 g
325% more
Pack
$69.50454 g (1 lb)454 servings
Inositol per serving
1 gin 1 g
Pack lasts
227 daysif you take 2 g a day
kirkmangroup.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 29
Nutricost
Inositol, 500 mg
Myo-inositol · Capsules
85Good qualityMade in USA
$0.31
per 2 g
328% more
Pack
$18.49240 capsules
Inositol per serving
0.5 gin 1 capsule
Pack lasts
60 daysif you take 4 capsules (2 g) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 30
Source Naturals
Pure Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.31
per 2 g
329% more
Pack
$33.72260 servings
Inositol per serving
0.84 g
Pack lasts
109 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 31
Nutricost
Inositol Capsules
Myo-inositol · Capsules
85Good qualityPacked in USA
$0.32
per 2 g
339% more
Pack
$18.97240 capsules
Inositol per serving
0.5 gin 1 capsule
Pack lasts
60 daysif you take 4 capsules (2 g) a day
nutricost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 32
Source Naturals
Pure Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.32
per 2 g
340% more
Pack
$17.27130 servings
Inositol per serving
0.84 g
Pack lasts
54 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 33
BulkSupplements
IP6 (Inositol Hexaphosphate) Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.33
per 2 g
358% more
Pack
$30.97313 servings
Inositol per serving
0.6 g
Pack lasts
93 daysif you take 2 g a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 34
Source Naturals
Pure Inositol Powder
Myo-inositol · Powder
80Good qualityCountry not stated
$0.33
per 2 g
361% more
Pack
$9.0565 servings
Inositol per serving
0.84 g
Pack lasts
27 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 35
Best Naturals
Inositol 1000 mg
Myo-inositol · Tablets
80Good qualityMade in USA
$0.33
per 2 g
363% more
Pack
$9.9960 tablets
Inositol per serving
1 gin 1 tablet
Pack lasts
30 daysif you take 2 tablets (2 g) a day
shopbestnaturals.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 36
Vital Nutrients
Inositol Powder
Myo-inositol · Powder
85Good qualityMade in USA
$0.36
per 2 g
394% more
Pack
$39.99225 g (7.9 oz)59 servings
Inositol per serving
3.8 gin 3.8 g
Pack lasts
112 daysif you take 2 g a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 37
NOW Foods
Inositol, 500 mg
Myo-inositol · Capsules
80Good qualityCountry not stated
$0.37
per 2 g
410% more
Pack
$9.17100 capsules
Inositol per serving
0.5 gin 1 capsule
Pack lasts
25 daysif you take 4 capsules (2 g) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 38
Wellah
Myo + D-Chiro Inositol
Myo + D-chiro (40:1) · Capsules
80Good qualityMade in USA
$0.37
per 2 g
417% more
Pack
$11.16120 capsules30 servings
Inositol per serving
2 gin 4 capsules
Pack lasts
30 daysif you take 4 capsules (2 g) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 39
Vital Nutrients
Inositol Powder
Myo-inositol · Powder
85Good qualityMade in USA
$0.37
per 2 g
420% more
Pack
$39.99225 g (7.9 oz)56 servings
Inositol per serving
3.8 gin 4 g
Pack lasts
106 daysif you take 2 g a day
vitalnutrients.net (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 40
Swanson Vitamins
Inositol
Myo-inositol · Capsules
80Good qualityCountry not stated
$0.40
per 2 g
451% more
Pack
$12.89100 capsules
Inositol per serving
0.65 gin 1 capsule
Pack lasts
25 daysif you take 4 capsules (2.6 g) a day
swansonvitamins.com (opens in a new tab)
Checked Nov 1, 2026 · Label

40 of 99 shown

Good to know

Fact: 10,863%more per 2 g for the most expensive product than for the cheapest.
Fact: 10,343%more per 2 g for the cheapest d-chiro-inositol than for the cheapest myo-inositol.

How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check

The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.

How we calculate

Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.

Found a mistake or a product we should add? Email us

Inositol

What does 2 g mean?

Where products miss quality points

Pack size

Myo-Inositol Powder Pouch

Myo Inositol Powder

Inositol Powder

Inositol

Inositol Powder

Amazing Formulas Inositol Powder

Inositol, Unflavored

Inositol Powder

Myo & D-Chiro Inositol Powder

Myo & D-Chiro Inositol Powder Hormonal Balance & Ovarian Support

Inositol, 1,000 mg

Amazing Formulas Inositol - 1000 Mg

Inositol Powder

Amazing Formulas Inositol - 1000 Mg

IP6 (Inositol Hexaphosphate) Powder

Inositol Powder

Inositol Powder

Inositol Powder

Inositol 1000 mg

Inositol Powder - 100% Pure

Inositol Caps, 1,000 mg

Inositol Powder

Myo-Inositol

Inositol Powder

Myo-Inositol Powder

Myo-Inositol

Pure Inositol Powder

Inositol Pure Soluble Powder - Hypoallergenic

Inositol, 500 mg

Pure Inositol Powder

Inositol Capsules

Pure Inositol Powder

IP6 (Inositol Hexaphosphate) Powder

Pure Inositol Powder

Inositol 1000 mg

Inositol Powder

Inositol, 500 mg

Myo + D-Chiro Inositol

Inositol Powder

Inositol

Good to know