Dr. Tosin Odunsi
MD, MPH, FACOG
Board-certified OBGYN
Clinical expertise in pregnancy and postpartum.
The Clinically-Proven Ratio for Fertility
3.6:1 Ratio Myo + D-Chiro-Inositol
- Formulated at the 3.6:1 ratio of Myo-Inositol to D-Chiro-Inositol, an emerging ratio in reproductive wellness research†
- Supports normal ovulation, menstrual cycle regularity, healthy metabolism, and overall reproductive wellness†
- Precise, targeted Inositol formula with real doses, clearly labeled†
- HSA/FSA Eligible: Check with your provider to confirm your plan's specific requirements for reimbursement.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
- Free shipping over $50
- 60-day happiness guarantee
- Ships within 1 business day
Why women choose this
- Built for women's bodies
Formulated specifically for women, not a 'unisex' supplement repackaged with a pink label. †
- Forms your body can actually use.
Not the cheapest version of an ingredient. The right one.†
- Third-party tested every batch
Independent labs verify potency, label accuracy, and heavy-metal levels within recognized safety thresholds, every lot. †
- 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.†
- Expert-formulated, OBGYN-reviewed
Built by experts and backed by guidance from our medical council, including OBGYN and clinicians focused on women's wellness.†
- Third-Party Tested every single batch
- Expert-Panel Reviewed with our 6-OBGYN council
- 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
3.6:1 Ratio Myo + D-Chiro-Inositol, clearly.
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What it is
A Myo-Inositol and D-Chiro-Inositol supplement at the clinically studied 3.6:1 ratio, specifically associated with fertility and ovulation regularity†
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Who it's for
Women with irregular cycles or ovulation challenges who are trying to conceive or restore hormonal rhythm and want the ratio the research supports†
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What makes it different
The 3.6:1 ratio, clinically studied for fertility specifically. Real doses, clearly labeled. 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 3.6:1.
Clinically informed, meaningfully dosed. Formulated with intentional ingredient levels designed to deliver targeted support, without unnecessary fillers.
- Myo-Inositol
- D-Chiro-Inositol
- Hydroxypropyl Methylcellulose
- Organic Rice Flour
WORLD-CLASS WOMEN'S HEALTH EXPERTS
Backed by Women's Health Experts
Leading Women's Health Experts. One Advisory Board.
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
Backed by published nutritional research.†
Below is what published nutritional research says about the ingredients in this formula.
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The 3.6:1 ratio of Myo-Inositol to D-Chiro-Inositol mirrors the physiological ratio found in healthy ovarian follicular fluid + supports optimal ovarian function†
A pivotal study in the International Journal of Endocrinology by Unfer et al. found that a 3.6:1 myo-inositol to D-chiro-inositol ratio — matching the naturally occurring ratio in healthy human follicular fluid — produced significantly better outcomes for ovulatory function + egg quality than either inositol form alone or at different ratios. Excess DCI relative to this ratio was associated with reduced oocyte quality, confirming the 3.6:1 ratio as the clinically optimal formulation.†
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Myo-Inositol (1100 mg) supports healthy ovulatory function + menstrual cycle regularity†
A double-blind RCT in Gynecological Endocrinology found myo-inositol supplementation at 1100–2000 mg significantly improved ovulation frequency + menstrual cycle regularity in women with irregular cycles vs. placebo. Myo-inositol acts as a secondary messenger for FSH signaling in ovarian granulosa cells, supporting healthy follicular development.†
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Myo-Inositol (1100 mg) supports healthy egg quality + oocyte maturation†
A clinical study in the European Review for Medical + Pharmacological Sciences found myo-inositol supplementation significantly improved oocyte quality scores + maturation rates in women undergoing assisted reproduction. Myo-inositol is the primary inositol form found in follicular fluid, where it plays a direct role in supporting egg development.†
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D-Chiro-Inositol (Caronositol, 300 mg) supports healthy androgen balance + ovarian hormone function†
A landmark RCT in the New England Journal of Medicine found D-chiro-inositol supplementation at 1200 mg/day significantly reduced testosterone levels + improved ovulatory frequency vs. placebo in women with elevated androgens. The 300 mg dose in this formula, combined with myo-inositol at the clinically studied 3.6:1 ratio, supports healthy androgen balance without over-supplementing DCI.†
†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 →
What we believe, and what we won't compromise on.
Why Pink Stork? 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.
4.4
874 verified reviews from Pink Stork and Amazon
Pairs well with.
Hand-picked by Amy and our OBGYN board - because the right combination matters more than the biggest bottle.
Good questions. Real answers.
Is this product gluten free?
Yes, our 3.6:1 Ratio Myo + D-Chiro-Inositol is gluten free!
Is this product vegan friendly?
Yes, our 3.6:1 Ratio Myo + D-Chiro-Inositol is vegan friendly!
Is this product pregnancy and breastfeeding friendly?
Myo Chiro Inositol 3.6:1 is not formulated for use during pregnancy and breastfeeding. We recommend consulting your doctor before introducing new supplements to your wellness regimen.†
What is the purpose of this?
Myo/Chiro Inositol is a special blend of Myo-Inositol and D-Chiro Inositol that is designed to support natural fertility and a your body's natural ovulation. While it is designed for women with PCOS in mind, women without PCOS have also used this supplement to support overall ovarian wellness and function.†
What is the difference between the 3.6:1 blend and 40:1 blend?
3.6:1 Ratio Myo + D-Chiro-Inositol contains 1100 mg of Myo-Inositol and 300 mg of D-Chiro-Inositol, whereas 40:1 Ratio Myo + D-Chiro-Inositol contains 2000 mg of Myo-Inositol and 50 mg of D-Chiro-Inositol. Both products are designed to support ovulation and aid reproductive wellness 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 Myo/Chiro Inositol if I am not TTC but if I suffer from PCOS?
Yes, Myo/Chiro Inositol is designed with PCOS experiences in mind and is intended to support overall hormonal wellness, whether you are TTC or not.†
Can I take this product with other medications or supplements?
Many women enjoy using Myo Chiro Inositol 3.6:1 alongside other Pink Stork supplements. We recommend checking in with your doctor when starting a new regimen to ensure your wellness regimen is a great fit for you + your wellness goals.† If you're looking to take our Myo Chiro Inositol 3.6:1 with another non-Pink Stork product, we recommend checking in with your doctor to make sure it is compatible with your current regimen or medications.†
Can I open + empty the capsule into a drink or food?
Many women customize their intake method to suit their needs + tastes. Some may add to a beverage like a smoothie, while others stir into yogurt, applesauce, or whatever they prefer. We recommend checking in with your doctor to ensure your intake method is appropriate for you + your wellness goals.†
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. We recommend checking in with your doctor to ensure your consumption is appropriate for you + your wellness goals.†
How many do I take per day?
The recommended dosage outlined on our packaging for our Myo Chiro Inositol 3.6:1 is three capsules daily. We recommend checking in with your doctor to ensure this serving size is a great fit for you + your wellness goals.†
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.† For more information, check out this article: https://pinkstork.com/blogs/blog/why-do-some-products-affect-my-cycle
Still deciding?
Ask our support team →
Our promise
Held to a higher standard.
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.