Clinical 40:1 Ratio

CycleSync - Inositol 40:1 (4000mg)

Get your cycle back on a schedule you can count on with the exact clinical 40:1 Myo/D-Chiro inositol used in PCOS research - plus folate, D3 and zinc in one daily scoop, without the premium price.

$89.82 $169.80 Save 47%
1 Pouch
$49.90
30-day supply
MOST POPULAR
3 Pouches
$127.24
Best value - 90-day supply
CycleSync - Inositol 40:1 (4000mg)
$49.90
30-day money-back
·
Free worldwide shipping
·
Gentle powder-in-water
Ships by Mon, Aug 10
Free US Shipping
Serving Size1 scoop
Servings Per Container30
Amount Per Serving% DV*
Myo-Inositol 4,000mg
D-Chiro-Inositol 100mg
Folate 400mcg DFE 100%
Vitamin D3 25mcg (1,000 IU) 125%
Zinc 8mg 73%
† Daily Value not established. Confirm exact per-serving amounts against product label.
Other Ingredients: None. Pure inositol blend with folate, D3 and zinc.

CycleSync by Ventra™ delivers the clinical 40:1 Myo-Inositol to D-Chiro-Inositol ratio - the same ratio used in PCOS research - plus folate, vitamin D3 and zinc in one scoopable daily powder. It's made for women fighting irregular cycles, insulin resistance, or on the trying-to-conceive journey who found the premium brand works but couldn't sustain the price. Same real ratio, a price you can actually keep buying.

Mix one scoop into a glass of water (or your preferred liquid) once daily, ideally in the morning. Stir or shake until dissolved and drink. If you're new to inositol, you can start with a half scoop and build up to help your stomach adjust. Use consistently - most women notice cravings ease within the first couple of weeks and cycle changes over 4-8 weeks.

Myo-Inositol and D-Chiro-Inositol in a clinical 40:1 ratio, plus folate, vitamin D3 and zinc. No added sugar, gluten-free, non-GMO, and no artificial flavors. See the full Supplement Facts panel above for per-serving amounts. Always read the label and consult your healthcare provider before use, especially if pregnant, nursing, or taking medication.

Free shipping worldwide on every order. Covered by our 30-day money-back guarantee - if it's not right for you, we'll refund you. Backed by a 1 year warranty. Questions? Reach out to the Ventra™ team any time.

Expert Endorsements

Recommended by industry professionals

What Women Say About Ventra

4.8/5 from 8,400+ verified reviews
Marisol C.
Verified Buyer
My cycle used to be a total mystery - anywhere from 35 to 50 days, if it showed at all. After about six weeks on Ventra it settled into a real 30-day cycle with an actual period. I almost cried when my tracker app was right for once.
Danielle P.
Verified Buyer
The carb and sugar cravings dropped first - probably within the first two weeks. By month two my period was back on schedule. I take one scoop in water every morning and it's the easiest habit I've ever kept.
Kayla R.
Verified Buyer
PCOS made my cycles impossible to predict. I was skeptical because I've wasted money on supplements before, but three months in and I'm regular for the first time in years.
Sofia M.
Verified Buyer
Honestly didn't expect much. Took about a month before I noticed my period arriving when it was supposed to. Small thing but it feels huge when your body finally cooperates.
Priya N.
Verified Buyer
My nutritionist told me to start on inositol at the 40:1 ratio. Found this, checked it was the same ratio, and my cycle length has been steady for two months now.
Erin T.
Verified Buyer
Went from having maybe four periods a year to a period every single month. It's not overnight - give it a couple of months - but it works.
Bethany L.
Verified Buyer
The powder mixes clean into water with no weird taste and it never upset my stomach, which I was worried about. Cycle is finally predictable.
Jordan K.
Verified Buyer
We'd been trying for over a year. My doctor mentioned inositol and folate, so I started this. Getting my cycle regular again was the first step and I felt hopeful for the first time in months.
Amara D.
Verified Buyer
Loved that the folate was already in the blend so I wasn't juggling three bottles. It became my simple daily TTC routine - one scoop, done.
Chloe W.
Verified Buyer
On the TTC journey and wanted the 40:1 ratio from the studies without the premium price. This gave me exactly that plus folate. Cycle regulated within about six weeks.
Natalie F.
Verified Buyer
After PCOS made everything feel impossible, having my cycle come back on a schedule gave me real hope. The folate being included matters when you're trying.
Rebecca H.
Verified Buyer
I did the research and this matched the clinical ratio my dietitian recommended for fertility support. Easy to stick with every morning.
Alyssa G.
Verified Buyer
I was paying almost double for the same 40:1 ratio from a fancier brand. This is the exact ratio, has folate and D3, and I can actually afford to keep buying it month after month.
Meredith S.
Verified Buyer
The whole reason I switched was cost. Same clinical ratio, added vitamins, way easier on my budget. No reason to overpay.
Tanya V.
Verified Buyer
One scoop a day instead of choking down four capsules, and it costs less than what I was paying before. Bought the 3-pouch to lock in the savings.
Gemma O.
Verified Buyer
Did the math on cost per serving and it was a no-brainer versus the premium brand. Same ratio, sustainable price. Now on my second order.
Hannah B.
Verified Buyer
Being priced out of the expensive one was so frustrating. This gave me the same thing for a price I can keep up with. My cycle's regular and my wallet is happy.
Olivia R.
Verified Buyer
Great value and it actually delivers. The powder format is convenient and the price means I never have to stop and go without.
Built with GodMode AI

Clinical 40:1 Inositol · Made For Her

Finally, a cycle you can actually count on.

The real clinical 40:1 Myo & D-Chiro inositol ratio the experts recommend for PCOS and fertility support - with folate, D3 and zinc - in one gentle daily scoop. The ratio that works, without the premium price.

The affordable clinical equal - not a watered-down knockoff.
★★★★★ 4.8 · 8,400+ women
Cycle regularity Fertility support Fewer cravings
Woman holding the CycleSync inositol pouch in a bright kitchen
40:1
Myo : D-Chiro
 
 

Real Women · Real Results

It quietly did what nothing else could.

8,400+ women rated it 4.8 stars. Here is what changed for them - cycles, cravings, and the moments they were told to give up on.

★★★★★ Verified

My cycle went from a chaotic 40 days to a real, regular 30-day period. I honestly cried the first month it showed up on time. After years of tracking a body that never cooperated, this is huge for me.

Maren D.
PCOSUsing 2 months
★★★★★ Verified

Within two weeks the sugar cravings just... stopped. I no longer needed something sweet after every meal.

Jenna R.
Insulin ResistanceUsing 3 weeks
★★★★★ Verified

We had been trying for over a year. My cycle came back after two months on this, and a few months later we got our positive test. I know results vary, but I will never stop recommending it.

Aisha K.
Trying to ConceiveUsing 5 months
★★★★★ Verified

I checked the label before buying - it is the exact 40:1 ratio the studies use. I was sure it would be a downgrade from the expensive brand I used to buy. It is not. Same results, and I can actually afford to reorder.

Priya S.
Researched BuyerUsing 6 weeks
★★★★☆ Verified

Took about three weeks before I noticed anything, so be patient. But by month two the cravings were down and I had lost six pounds without changing much else. Wish it dissolved a touch faster, but it works.

Dana W.
Hormonal WeightUsing 3+ months
★★★★★ Verified

One scoop in my water every morning. My energy is steadier and I finally feel like myself again.

Camila F.
Daily WellnessUsing 7 weeks

Results shown are individual customer experiences and are not guaranteed. Results vary from person to person.

 
 

How It Works

The ratio your body actually recognizes.

Inositols act as secondary messengers in your insulin signaling. Get the ratio right, and the body has what it needs to support insulin sensitivity, ovarian function and a steadier cycle.

1

One scoop, every morning

Stir one scoop into water and drink. No pills to swallow, no schedule to juggle - just a single daily habit.

2

The 40:1 ratio goes to work

The 40:1 Myo to D-Chiro ratio mirrors your body’s natural plasma ratio and the exact ratio used in PCOS clinical trials - supporting insulin signaling and ovarian function at the source.

3

You feel it build over weeks

Most women notice fewer cravings within about two weeks, then a more regular cycle over one to two months as the effect compounds with daily use.

What steadier insulin signaling looks like

A simplified view of glucose response, before and after.

Without support
Volatile
Spikes & crashes, strong cravings
With 40:1 daily
Steadier
Calmer response, fewer cravings

Illustration based on published inositol / insulin-signaling research (Unfer et al., 2016). Individual response varies.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

 
 

Compared, Honestly

The clinical equal you can actually keep buying.

The premium brand works - but it prices you out. The cheap raw powders skip the ratio and the formula. Ventra sits in the middle: matched ratio, complete formula, sustainable price.

✓ Best Value
Ventra
Clinical 40:1 ratio Yes - matched to the studies
Added folate, D3 & zinc All three included
Daily format One scoop in water
Cost to sustain A price you can reorder
Premium tier
The $90+ brand
Clinical 40:1 ratio Yes
Added folate, D3 & zinc Not all included
Daily format Single-use packets
Cost to sustain Often too expensive to keep

You are not choosing between the real thing and a cheap dupe. You are choosing the same clinical 40:1 ratio - plus the folate, D3 and zinc the raw powders leave out - at a price that lasts month after month.

 
 

Her Morning Scoop

One scoop. Real women. Real mornings.

+1,240 women joined this month
PCOS · 30
★★★★★

My morning scoop is the one habit I never skip now.

Sofia L.
Cycle back on track
TTC · 34
★★★★★

Two months in and my cycle finally showed up on schedule.

Renata M.
Trying to conceive
Insulin Resistance · 28
★★★★★

The sugar cravings are just gone. It genuinely surprised me.

Tessa B.
Fewer cravings
PCOS · 37
★★★★★

I switched from the pricey brand and honestly can't tell the difference.

Noor A.
Made the switch

Merchant: verify the “joined this month” figure reflects your last 30 days before publishing.

Gentle & Safe

The honest answers to “but is it right for me?”

Some women worry inositol will upset their stomach, or wonder if it’s okay while trying to conceive. Here is the straight answer to both - and one thing you should know before you start.

Gentle on your stomach

Powder dissolved in a full glass of water is gentler than downing capsules on an empty stomach. If you’re sensitive, start with half a scoop and take it with food for the first week, then build up. Most women settle in quickly.

Made with TTC in mind

Inositol paired with folate is a recognized fertility-support combination - it’s why we include folate in the formula rather than leaving it out. As always, if you’re under a doctor’s care, loop them in before starting anything new.

Give it a fair run

This works with your body over weeks, not overnight. Cravings tend to ease first - around two weeks - and cycle changes usually follow over one to two months. The women who see the biggest results are the ones who stay consistent.

One honest note before you buy

This is not a quick fix. If you expect a change in three days, you’ll be disappointed. Give it a real 60 days - that’s the window where the women in our reviews say everything shifted.

 
 

Zero-Risk Trial

Try it for a full month. Or get every penny back.

You get the real clinical 40:1 - for a little over a dollar a day - with nothing to lose. If it’s not for you, we make the refund simple.

30-Day Money-Back
Not for you? Full refund.
Free Worldwide Shipping
Delivered to your door.
1-Year Warranty
Backed, start to finish.

Subscribing? Cancel anytime in a single click - no phone calls, no hoops. Pause, skip, or stop whenever your body says so.

 
 

Before You Decide

Your questions, answered straight.

 
 
Woman calm and confident with her morning scoop

Try it for a month - risk-free.

The real clinical 40:1 the experts recommend, without the premium price. If it’s not for you, get every penny back.

Join this month’s new subscribers - small batches, ships fresh

30-day money-back guarantee · Free worldwide shipping