Myo‑Inositol & D‑Chiro Inositol Powder

Daily hormone support.*

Tested and certified by independent groups
  • Clean Label Project says this product tested in the best one-third of its category for the contaminants it screens.
  • An outside group tested this product for heavy metals, pesticides and plastic chemicals that labels do not list.
  • NSF checked that what is in the bottle matches the label, and tested for certain contaminants.
  • NSF tested this product and audited where it is made to check it meets a gluten-free limit.
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36,274 ratings and reviews by women like you86% rate us 4 or 5 stars

Best-Selling Inositol Supplement in the USA*

What customers say

4.4

36,274 ratings and reviews

86% rated 4 or 5 stars

313 written reviews. Featured reviews come first. Tap a star row or change the sort to see every rating, including the lowest.

Verified purchase

This is the 3rd powdered inositol that I've tried and the only truly flavorless one. I had to take the others with flavored drinks, but this one I can take in water no problem. Dissolves really well. I've only been taking for 2 weeks so I cant attest to effectiveness, as studies say it is most effective when taken for 3 consecutive months at 4050mg, so I got the 90-day jar to stay consistent. but this brand was recommended by my endocrinologyst so I suppose its good

Amazon customer
Verified purchase

Inositol instantly helped me to feel calmness in my body. I am working on losing weight and I noticed that my midsection is showing results and feels tighter after a few days. I feel energetic as well after consumption. It dissolves easily in water and the quality seems superb considering that it worked so quickly.

Amazon customer

Helped with overeating

I bought this at the beginning of February and I do not regret it at all. I would say after a month of adding it to my greens in the morning I’m starting to see I have more energy and my cravings/ overeating have slowed down. Don’t expect it to be immediate definitely took the entire month but I’m so thankful for this!

Customer
Verified purchase

I tried with capsules before but when I found out this powered option, I decided to tried out and I am a complete fan. It dissolves super great in water. I had not have side effects and you get value for money with this size. I've felt so much better and it is overall a great supplement.

Amazon customer
Verified purchase

Great Wholesome story Team!

The first product I bought never came but after emailing the Wholesome Story Team trying to figure out what happened they said give it a week to see if it was coming late but unfortunately it never came but the Wholesome Team did offer to send 1 free one so I decided to have it sent to my In-laws house to hopefullyget it and I finally receive it, plus they also made sure to put it on express so I didn’t wait to much longer! Will be buying again

Anonymous
Verified purchase

I saw a big difference in the cycle. I've been buying this for a long time. I'm satisfied and will continue to purchase this again. Glad other reviewers were able to share their experiences to help others make better choices in buying something like this supplement.

Amazon customer

Reviews are the personal opinions and experiences of individual customers. Wholesome Story did not pay or reward anyone for them, and we do not edit them. They are not our claims. Wholesome Story products are not intended to diagnose, treat, cure, or prevent any disease, and individual results vary.

Real orders from our customers

How our customers take it.

Out of every 10 orders for our inositol, 6 are reorders.

Your first year
  1. Nov1
  2. Dec2
  3. Jan3
  4. Feb4
  5. Mar5
  6. Apr6
  7. May7
  8. Jun8
  9. Jul9
  10. Aug10
  11. Sep11
  12. Oct12

Half of the customers who reorder are still ordering into Aug. 1 in 4 go on past month 22.

9.2 monthsHalf of the customers who reorder keep ordering for 9.2 months or more.
6 in 10keep ordering for half a year or more.
1 in 4keep ordering for 22 months or more.

Life gets busy. About 1 in 4 took a year or more off, then came back to us.

This counts all our inositol products together: capsules, powder, the version with folate and vitamin D3, and every size.

The 180-serving size costs less per serving

$0.48 per serving, against $0.78 on the 90-serving size. On our store, 3 in 4 reorders arrive by subscription: save 10% more, plus $5 off your first subscription.

Move up to 180 servings

Based on real orders from our customers, on Amazon and on our store, as of October 2026.

Learn the basics

What is inositol?

Inositol is a sugar-like molecule found in every cell of your body. It has the same chemical formula as glucose, C6H12O6, but a different structure. It was long counted as a B vitamin, but its status as a vitamin is uncertain. There are nine forms of inositol. Myo-inositol is the most common one.

1 Your body is full of it.

Every cell in your body has it.

2 Here is where it goes.

Cells build it into their outer membrane.

3 This is why it matters.

Cells use it to pass messages along.

What does it do in the body?

Cells use inositol as a building block. It becomes part of molecules in the cell membrane that carry messages from outside the cell to the inside. Cells use these messages to respond to signals from outside the cell. Scientists call these molecules inositol phosphates and phosphoinositides. They belong to the "second messenger" systems cells use to relay signals.

Does your body make it?

Yes. Your cells make inositol from glucose. You also get some from food. The amount depends on what you eat. Fruits, beans, grains and nuts have the most. In grains and beans much of it is stored as phytic acid.

What are myo- and D-chiro-inositol?

They are two forms of inositol. Myo-inositol is the most common form in the body. Animal studies show that tissues can turn some of it into D-chiro-inositol. In one animal study, the share differed from tissue to tissue. Researchers study each form alone and the two together.

What is a 40:1 ratio?

Our formula has 2,000 mg of myo-inositol and 50 mg of D-chiro-inositol: 40 parts to 1. A ratio compares the two forms. See the Supplement Facts for the exact amount of each.

How is it taken?

Follow the suggested use on the label. Read the caution on the label before you use it. Talk with your healthcare provider if you are pregnant, breastfeeding, have a medical condition or take medication.

Supplements you can trust.

The FDA does not test supplements before they are sold. So we ask independent groups to test ours, and we show you how to look each result up yourself.

  • Independent testing
  • 90-day guarantee
  • Blended in the USA with domestic and international ingredients
  • American company
Clean Label Project Purity AwardClean Label Project says this product tested in the best one-third of its category for the contaminants it screens.

What it checks

  • Clean Label Project buys top-selling products in a category and has independent labs test them for heavy metals, pesticides, glyphosate, phthalates and bisphenols.
  • Results are compared across the category. Only products in the best one-third earn the award, and they must meet other compliance requirements.
  • The award is given to individual products, not to a whole brand.

What it does not mean

  • It does not mean the product has no contaminants.
  • It does not mean other products are unclean. Not winning is not a sign of a problem.

Look it up yourself

Clean Label Project CertifiedAn outside group tested this product for heavy metals, pesticides and plastic chemicals that labels do not list.

What it checks

  • A brand sends a product to Clean Label Project. Independent labs screen it for heavy metals, pesticides (including glyphosate), phthalates and bisphenols.
  • Clean Label Project judges each product on its own against limits set by product type.
  • Clean Label Project says certified products are tested again every year.

What it does not mean

  • It does not mean the product has zero contaminants. Clean Label Project notes heavy metals occur naturally.
  • It does not check that the label amounts are correct. That is a different test.

Look it up yourself

NSF Contents CertifiedNSF checked that what is in the bottle matches the label, and tested for certain contaminants.

What it checks

  • NSF reviews the formula and checks the label claims against lab results for the product.
  • NSF also tests for contaminants, including toxic elements such as lead, mercury, arsenic and cadmium.
  • NSF audits the manufacturing site against good manufacturing practices (GMP).

What it does not mean

  • It does not screen for substances banned in sport. That is the separate NSF Certified for Sport program.
  • It does not mean the product treats or prevents any condition, or that it works for any person.

Look it up yourself

NSF Certified Gluten-FreeNSF tested this product and audited where it is made to check it meets a gluten-free limit.

What it checks

  • NSF reviews the ingredients and tests the finished product for gluten.
  • NSF audits the manufacturing site to check that gluten cannot get into the product.
  • Certified products are held to the limit in NSF's gluten-free protocol, which NSF says is consistent with the FDA limit of 20 parts per million.

What it does not mean

  • It does not mean the product treats or helps with any condition, including celiac disease.
  • It covers gluten only. It does not cover other allergens or other claims.

Look it up yourself

More questions? We're here to help

Why Wholesome Story?

We've been making inositol since 2017, and 1.25 million customers have made us part of their routine. Our Myo & D-Chiro Inositol is third-party tested, NSF Contents Certified, NSF Certified Gluten-Free, and Clean Label Project Certified, and we've held the Clean Label Project Purity Award for six consecutive years.

Every serving gives you 2,000 mg Myo-Inositol and 50 mg D-Chiro Inositol in a 40:1 ratio, and it's backed by our 90-day money-back guarantee.

Is taking inositol right for me?

Our Myo & D-Chiro Inositol is made for adults who want daily hormone support.*

Every body is different. When you start any new supplement, and especially if you have a health concern, talk with your healthcare provider, since we can't give medical advice.

Our 40:1 formula was made with women in mind. Men may prefer our Inositol (Myo-Inositol), which has no D-Chiro Inositol.

What's the difference between Myo-Inositol and D-Chiro Inositol?

Myo-Inositol is the most abundant form of inositol in the body. It helps cells respond to hormone signals, including the ones involved in healthy ovarian function.* D-Chiro Inositol is made by the body from Myo-Inositol and works alongside it for hormone support.*

Our formula is a 40:1 ratio of Myo- and D-Chiro Inositol, designed to support hormone signaling and a normal, healthy cycle at the cellular level.* Each serving pairs 2,000 mg Myo-Inositol with 50 mg D-Chiro Inositol.

Does this product contain hormones?

No. Our inositol doesn't contain any hormones. It supports the natural processes your body already uses, without supplying hormones directly.*

How and when should I take inositol?

Mix 1 heaping scoop (2.2 g) into any hot or cold beverage that is free of caffeine, sugar substitutes, or carbonation. Do not mix with alcoholic beverages. Use 1-2 servings as needed or as directed by a physician.

Pick a time of day you'll remember, since consistency matters most.

Some customers take more or less than this based on their healthcare provider's instructions.

How long should I take it?

Everyone's different. We recommend 3 to 6 months of consistent daily use.*

How long you keep taking it depends on why you're taking it, so it's best to decide that with your healthcare provider.

Can I take inositol with my other supplements and medications?

Please use caution when taking this product alongside any other supplement or medication that can lower blood sugar levels, as this combination may increase the risk of hypoglycemia.

Talk with your healthcare provider before adding it, especially if you take prescription medication. They can help determine whether it's right for you based on your individual health needs.

Can I take it if I'm pregnant or breastfeeding?

Talk with your healthcare provider if you are pregnant, breastfeeding, have a medical condition or take medication. Please read this before you use it: Consult your healthcare provider before use if you are contemplating pregnancy, pregnant, nursing, have any medical conditions, or use any medications.

Can I trust the quality?

Yes. Our Myo & D-Chiro Inositol is third-party tested, NSF Contents Certified, NSF Certified Gluten-Free, and Clean Label Project Certified, and we've held the Clean Label Project Purity Award for six consecutive years. Each mark links to its public listing in the certifications section above.

It contains no animal products, gluten, soy, or nuts. It's made in a facility that also processes common food allergens, so we can't promise the complete absence of any allergen not listed on the label. Our inositol is currently sourced from corn.

Is there a difference between the powder and the capsules?

Both have 2,000 mg Myo-Inositol and 50 mg D-Chiro Inositol per serving. This page is the powder. You mix 1 scoop (2.2 g) into a drink, which is an option if you'd rather not take or swallow pills. Our capsules are easy on the go. One serving of the capsules is 4 capsules, made from hypromellose, a plant-based vegetarian capsule, with a very small amount of rice flour to keep the powder flowing in the encapsulation machines.

Can I save money by buying a bigger size?

Yes. The 6-month size costs about $0.48 a day, compared with $0.93 a day for the 1-month size, which is about 49% less per serving. Subscribing saves another 10%, and your first subscription order is $5 off. Pick the length that matches how long you plan to take it.

Where people go next.

Here is what the customers who stay with us do next.

  • 8 in 10 customers who change size go bigger.$0.48 per serving instead of $0.78.
  • Most added Berberine is the product our inositol customers add most.
    From $34.95

Based on real orders from our customers.