Dr. Tosin Odunsi
MD, MPH, FACOG
Board-certified OBGYN
Clinical expertise in pregnancy and postpartum.
Expert-Panel Reviewed
The Research-Backed Inositol Ratio
40:1 Ratio Myo-Inositol + D-Chiro-Inositol
- Formulated with a clinically studied 40:1 ratio of Myo-Inositol and D-Chiro-Inositol to support hormonal wellness, ovarian health, and menstrual cycle regularity.
- Inositols work together to support healthy hormone signaling, metabolic function, and reproductive wellness as part of a consistent daily routine.
- Created for women looking to support hormonal balance and healthy menstrual cycle patterns with easy-to-take daily capsules.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
- Expert-Panel Reviewed · women's wellness
- Third-party tested, every batch
- Reviewed by our OBGYN-Led Council
- HSA / FSA eligible
- Free shipping over $50
- 60-day happiness guarantee
- Ships within 1 business day
Why women choose this
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Built for women's bodies
Formulated specifically for women, not a 'unisex' supplement repackaged with a pink label. †
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Forms your body can actually use. †
Not the cheapest version of an ingredient. The right one.†
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Third-party tested every batch
Independent labs verify potency, label accuracy, and heavy-metal levels within recognized safety thresholds, every lot. †
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Every ingredient named, every form on the label
Every ingredient on the label. Every ingredient on the label is there for a reason. No fillers, no fluff, no hiding.
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Expert-formulated, OBGYN-reviewed
Built by experts and backed by guidance from our medical council, including OBGYN and clinicians focused on women's wellness.
- Expert-Panel Reviewed with our 6-OBGYN council
- Third-Party Tested every single batch
- Bioavailable Forms what your body absorbs
- Independent · Woman-Owned still independent, since the beginning
- Made in the USA cGMP-certified facility
- Faith · Family · Transparency what we believe
- 1M+ Women Helped since 2015
- HSA / FSA Eligible use pre-tax at checkout
In plain English
Myo + Chiro-Inositol 40:1, clearly.
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What it is
A Myo-Inositol and D-Chiro-Inositol supplement at the research-backed 40:1 ratio for general ovulation support and insulin sensitivity.†
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Who it's for
Women trying to conceive, managing cycle irregularity, or supporting insulin sensitivity who want an Inositol formula aligned with mainstream fertility research.†
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What makes it different
The 40:1 ratio, widely studied for fertility and ovulation support. Clearly labeled actives at the researched dose. Third-party tested.†
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What's not in it
No folic acid. No synthetic dyes. No fillers.
Inside the bottle
What's actually in Myo + Chiro-Inositol 40:1.
Clinically informed, meaningfully dosed. Formulated with intentional ingredient levels designed to deliver targeted support, without unnecessary fillers.
- Myo-Inositol
- D-Chiro-Inositol (Caronositol)
- Hypromellose Capsule
- Organic Rice Extract Blend
- Organic Rice Hull.
Medical advisory board
Reviewed by the council that reviews every Pink Stork formula.
Every Pink Stork formula is reviewed by our OBGYN-Led Council, clinicians whose input shapes every formula, dose, and ingredient we ship.
Dr. Jessica Nazzaro
DO, FACOG, NCMP
OBGYN · Menopause Practitioner
Leads our cycle, hormone, and menopause work, and brings a quiet faith-first lens to the council.
Dr. Jummy Amuwo
PharmD, MPH, BCPS
Clinical Pharmacist · Women's Wellness
Pharmacological insight and women's wellness research to inform the topics and health guidance Pink Stork brings to its community.
Dr. Samantha Ess
ND
Naturopathic Doctor · Fertility + Hormones
Walks the natural path alongside our MDs, holistic rigor, not wellness hand-waving.
Dominique Landry
Certified Personal Trainer
Founder, Fit Enough · Mental + Physical Wellness
Grounds us in what's actually doable for a real woman on a real day.
Carlie Palmer-Webb
MA, Healthy Sexuality
The Christian Sex Educator · Researcher
Frames intimacy, fertility, and womanhood through a faith-rooted, research-backed lens.
6
expert advisory panel
100%
third-party lab tested
1M+
women served brand-wide
8.3M+
bottles shipped to women
What the research says
Backed by published nutritional research.†
Below is what published nutritional research says about the ingredients in this formula.
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Myo-Inositol is studied for ovulatory function in women with PCOS-pattern cycles.
A 2017 systematic review in the European Review for Medical and Pharmacological Sciences summarized Myo-Inositol clinical trials in women with PCOS and reported consistent improvements in ovulatory and metabolic markers. The 40:1 Myo:D-Chiro ratio reflects the physiological balance found in healthy ovarian follicles.
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D-Chiro-Inositol with Myo-Inositol mirrors the body's natural ovarian ratio.
A 2017 review in European Review for Medical and Pharmacological Sciences concluded that the 40:1 Myo-Inositol to D-Chiro-Inositol ratio reflects the physiological balance found in healthy ovarian follicles. The 3.6:1 ratio is studied separately for fertility outcomes in women with PCOS.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Not intended for use during pregnancy. Please consult your healthcare provider before starting any supplement.
From Amy, Founder + CEO
Pink Stork started because I couldn't find a supplement I trusted for my own pregnancy. Every formula since has been built with our OBGYN-led medical council, third-party tested, and made with the bioavailable forms, Methylated Folate, Chelated Iron, Algae DHA, my own kids deserve. We're still independent, still woman-owned, and still run by me. I take this every day.
Amy
Founder + CEO, Pink Stork
Read Amy's story →
Why Pink Stork
What we believe, and what we won't compromise on.
We've spent a decade saying no to the shortcuts the rest of the supplement industry says yes to. Here's the standard we hold ourselves to, in plain English.
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Bioavailable forms, every single time.
Methylfolate over folic acid. Chelated Iron over ferrous sulfate. Methylcobalamin over cyanocobalamin. We pay more so your body can actually use what's on the label.
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Real ingredients. Real names. Real forms.
Every ingredient is named on the panel, in its bioavailable form. No anonymous 'special blends' designed to hide what's actually in the bottle.
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Third-party tested every batch.
Independent labs verify potency, label accuracy, heavy metals, and microbes, every lot, before it ships.
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Expert-Panel Reviewed, doctor-reviewed.
Built and reviewed by our six-person, OBGYN-led medical advisory council. Real doctors with real practices and real patients, not paid spokespeople.
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Independent and woman-owned.
Still independent. Not owned by Unilever or Nestlé. Not for sale. Accountable to the women who take our products, not to investors waiting on an exit.
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Built on faith, family, and a better standard for moms.
Founded a decade ago by Amy, a mom who couldn't find supplements she trusted, and built them. She still owns Pink Stork. She still runs it. And she still takes them every single day.
Real women, real results
Over a million women. Still counting.
4.7
330 verified reviews from Pink Stork and Amazon
Better together
Pairs well with.
Hand-picked by Amy and our OBGYN board - because the right combination matters more than the biggest bottle.
Questions we get a lot
Good questions. Real answers.
Is this product gluten free?
Yes, our Myo/Chiro 40:1 is gluten free!
Is this product vegan friendly?
Yes, our Myo/Chiro 40:1 is vegan friendly!
What is the difference between the 3.6:1 blend and 40:1 blend?
Myo Chiro Inositol 3.6:1 contains 1100 mg of Myo-Inositol and 300 mg of D-Chiro-Inositol, whereas Myo Chiro Inositol 40:1 contains 2000 mg of Myo-Inositol and 50 mg of D-Chiro-Inositol. Both products are designed to support ovulation and aid fertility in women who have been diagnosed with PCOS or who struggle with irregular cycles. Please be sure to check with your doctor about which blend is best for you!
Can I take this product with other medications or supplements?
Our Myo/Chiro Inositol 40:1 can be taken along with other Pink Stork supplements, as our products are designed to work together for full-body care. We recommend checking with your healthcare provider when starting a new regimen to ensure all your health needs are being met.
If you're looking to take our Myo/Chiro Inositol 40:1 with another non-Pink Stork product, we recommend checking with your healthcare provider to make sure our Myo/Chiro Inositol 40:1 is compatible with your current regimen or medications.
If you're looking to take our Myo/Chiro Inositol 40:1 with another non-Pink Stork product, we recommend checking with your healthcare provider to make sure our Myo/Chiro Inositol 40:1 is compatible with your current regimen or medications.
Can I open + empty the capsule into a drink or food?
Absolutely! You can customize your intake method to suit your needs + tastes. Some women may add to a beverage like a smoothie, while others stir into yogurt, applesauce, or whatever they prefer!
When should I take Myo Chiro Inositol?
We recommend taking our Myo Chiro Inositol throughout your entire cycle, until a positive pregnancy test has occurred.
How many do I take per day?
The recommended serving size of our Myo/Chiro 40:1 is three capsules daily. You may take all three capsules together, or split them into separate doses.
Could this affect my regular cycle?
While our Myo/Chiro is not meant to interrupt your cycle, it is possible to see a change in your cycle/ovulation when you first begin the supplement due to the nature of the product. As each woman is unique, we do recommend speaking with your doctor to ensure this product is a good fit for you.
Still deciding?
Ask our support team →
Our promise
Higher than "probably fine."
Every bottle is built in a cGMP-certified US facility, formulated by our in-house team, reviewed by our OBGYN advisory board, and third-party tested for heavy metals, microbes, and label accuracy before it ships. If it's on the label, it's in the bottle, in the dose, in the right form.
- Third-party tested, every batch
- Made in a cGMP-certified facility in the United States
- Expert-Panel Reviewed · OBGYN-led medical council of 6
- Clean: real ingredients, no synthetic dyes, no fillers
- Free from common allergens where formulation allows
- Bioavailable forms, methylated, chelated, active
- Women-owned · founded by a mom of six · 60-day happiness guarantee
- Trusted brand-wide. Over a million women served, still counting.