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Myo-Inositol & D-Chiro Inositol Capsules
A clean, NSF Contents Certified 40:1 inositol capsule, though matching the 4,000 mg dose used in PCOS trials takes 8 capsules and about $1.86 a day.
7.3
Mixed
Nutrition Reviews score
Weighted across efficacy, quality, value, experience & transparency. See breakdown
- Form
- Capsule
- Serving
- 4 Capsules
- Servings
- 30
- Per serving
- $0.93
NSF Contents CertifiedClean Label ProjectcGMP facility
VeganGluten-freeNon-GMO
Check price on AmazonShop on TikTok Shop884 soldBuy from the brand$27.95
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Last reviewed November 2, 2026 by the Nutrition Reviews Editorial Team · How we review
Our verdict
Wholesome Story is one of the best-verified inositol capsules, with NSF contents certification and a Clean Label Project Purity Award behind a simple, fully disclosed 40:1 formula. The catch is dose and value: one serving is half the amount used in many PCOS studies, so the studied dose takes 8 capsules a day and costs more than full-dose powders. The research is encouraging but low certainty, so use it as a supporting option alongside medical care, give it about three months, and involve your clinician if you are pregnant, trying to conceive or on blood-sugar medication.
Best for
- Women with PCOS who want a third-party certified 40:1 inositol in capsules, with their clinician's input
- People who prefer small capsules to an unflavored powder
- Shoppers who value NSF and Clean Label Project verification
Skip it if
- Anyone expecting it to replace medical care for PCOS or fertility
- Budget buyers who want the full 4,000 mg dose, which costs less as a powder
- People who dislike swallowing up to 8 capsules a day
How it scored
Our five-factor score out of 10. Factors are weighted by how much they matter to the outcome you’re paying for. Methodology
7.3
Mixedout of 10
- Efficacy30%6.6
Key ingredients at clinically studied doses, and how strong the evidence is.
- Quality & Purity25%8.6
Third-party testing and certifications, manufacturing standards, contaminant testing, recall history.
- Value20%6.0
Cost per effective serving compared with category peers.
- Experience15%8.0
Taste, mixability, texture and tolerability from aggregated buyer and creator feedback.
- Transparency10%7.8
Full label disclosure (no proprietary blends), available COAs, honest marketing.
Our review
Wholesome Story Myo-Inositol & D-Chiro Inositol is a simple two-ingredient capsule: each 4-capsule serving lists 2,000 mg of myo-inositol and 50 mg of D-chiro-inositol, a 40:1 ratio, with only rice flour and a plant capsule added. It contains no folate or vitamin D; those come in a separate version. Researchers describe 40:1 as the normal ratio of the two forms in blood plasma, and a small 2019 trial with eight women per group reported better ovulation with it than with other ratios.
Most research involves women with PCOS. In a 2023 meta-analysis of 26 randomized trials, inositols made regular cycles more likely than placebo and lowered testosterone and insulin measures, but a 2024 review that informed the international PCOS guideline judged the evidence limited and inconclusive, and a Cochrane review rated fertility outcomes very uncertain. Many trials gave 4,000 mg of myo-inositol a day, which here takes 8 capsules. No trial has tested this product itself, and inositol is not a substitute for medical care for PCOS or fertility; check with a clinician if you are pregnant, in fertility treatment or on diabetes medication, since the brand warns about low blood sugar.
Quality is a strength: NSF lists it as Contents Certified, and Clean Label Project's certificate lists the 120-count bottle for its Purity Award. At $27.95 for 120 capsules on wholesomestory.com, the label serving costs $0.93 a day, but the higher studied dose costs about $1.86 and empties a bottle in 15 days. Buyers mostly report easy tolerance and steadier cycles; complaints include gas, stomach pain and slow or no results.
What’s inside
| Key ingredient | Per serving | Why it matters |
|---|---|---|
| Myo-inositol Half the 4,000 mg a day used in many PCOS trials; the label allows two servings (8 capsules) a day to reach it. | 2,000 mg | Half the 4,000 mg a day used in many PCOS trials; the label allows two servings (8 capsules) a day to reach it. |
| D-chiro-inositol Paired at 40:1, described as the normal plasma ratio; small trials favored 40:1, but the overall evidence is low certainty. | 50 mg | Paired at 40:1, described as the normal plasma ratio; small trials favored 40:1, but the overall evidence is low certainty. |
Supplement Facts
Serving Size 4 Capsules
Servings Per Container 30
Amount Per Serving% Daily Value
Myo-Inositol 2,000mg**
D-Chiro Inositol 50mg**
* Percent Daily Values are based on a 2,000 calorie diet. † Daily Value not established.
Other ingredients: Methylcellulose (Capsule), Rice Flour.
Testing & quality
NSF Contents Certified (confirmed in NSF's database) and listed for a Clean Label Project Purity Award on CLP's certificate; says it is made in an NSF-registered, GMP-audited US facility and is NSF Certified Gluten-Free.
Goals it supports
Creator video reviews
Independent creators reviewing Myo-Inositol & D-Chiro Inositol Capsules on YouTube and TikTok.
3 positive1 mixed1 critical
Pros & cons
What we like
- Fully disclosed 2,000 mg myo-inositol and 50 mg D-chiro-inositol per serving, with no proprietary blend
- NSF Contents Certified and listed on Clean Label Project's Purity Award certificate
- Vegan capsules with only rice flour as a filler
- Most buyers find it easy to tolerate, especially when taken with food
Watch-outs
- One serving is half the 4,000 mg daily dose used in many PCOS trials
- The studied dose takes 8 capsules and about $1.86 a day, so a bottle lasts 15 days
- Evidence for cycle and fertility outcomes is encouraging but low certainty
- Some users report gas or stomach pain, and the brand warns about low blood sugar
Questions buyers ask
How many Wholesome Story inositol capsules should I take a day?
The label serving is 4 capsules, giving 2,000 mg of myo-inositol and 50 mg of D-chiro-inositol, and the directions allow 1 to 2 servings a day. Many PCOS trials used 4,000 mg plus 100 mg daily, which takes 8 capsules, so a 120-capsule bottle then lasts about 15 days. Taking it with food may reduce stomach upset.
Why does Wholesome Story use a 40:1 ratio?
Researchers describe 40:1 as the normal ratio of myo-inositol to D-chiro-inositol in blood plasma. Small Italian trials, including a 2019 study with eight women per group, reported better ovulation with 40:1 than with other ratios. These studies were small, and broader reviews rate the evidence for inositol in PCOS as low certainty, so the ratio is reasonable rather than proven.
Who should check with a doctor before taking inositol?
Talk to a clinician first if you are pregnant, breastfeeding or in fertility treatment, or if you take metformin, insulin or other blood-sugar-lowering drugs, because Wholesome Story warns its inositol can contribute to low blood sugar in some people. Inositol is generally well tolerated; in a safety review, mild nausea, gas or diarrhea appeared mainly at very high doses of 12 grams a day.
Sources we checked (24)
- 1.wholesomestory.com/products/myo-d-chiro-inositol
- 2.wholesomestory.com/products/myo-d-chiro-inositol.js
- 3.cdn.shopify.com/s/files/1/0412/0094/3266/files/2_68bab64d-b75c-421d-9899-da8c9cc984f2
- 4.wholesomestory.com/pages/about-us
- 5.wholesomestory.com/pages/contact-us
- 6.wholesomestory.com/pages/press-releases
- 7.prweb.com/releases/best-selling-inositol-brand-wholesome-story-expands-to-targe
- 8.amazon.com/dp/B07HX2DMY8
- 9.shop.tiktok.com/us/pdp/myo-d-chiro-inositol-capsules-by-wholesome-story-for-hormonal-
- 10.shop.tiktok.com/us/store/wholesome-story/7495471669058439285
- 11.info.nsf.org/Certified/Dietary/Listings.asp?CompanyName=wholesome+story
- 12.cleanlabelproject.org/brand/wholesome-story/
- 13.cleanlabelproject.org/wp-content/uploads/20251021_CLP-Certificate_Wholesome-Story.pdf
- 14.pubmed.ncbi.nlm.nih.gov/36703143/
- 15.pubmed.ncbi.nlm.nih.gov/38163998/
- 16.pmc.ncbi.nlm.nih.gov/articles/PMC11099481/
- 17.pubmed.ncbi.nlm.nih.gov/30570133/
- 18.pubmed.ncbi.nlm.nih.gov/31298405/
- 19.pubmed.ncbi.nlm.nih.gov/22774396/
- 20.pubmed.ncbi.nlm.nih.gov/21845803/
- 21.nutritionreviews.org/categories/vitamins-minerals
- 22.nutritionreviews.org/supplements/naturewise-vitamin-d3-5000-iu-softgels
- 23.nutritionreviews.org/supplements/thorne-advanced-testosterone-support
- 24.nutritionreviews.org/supplements/toplux-magnesium-complex
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