Trusted by 10,000+ Women

Finally. A Cycle
You Can Count On.

The clinically-studied 40:1 Myo + D-Chiro Inositol formula — now in a delicious daily drink mix. Hormone balance, cycle support, and fertility health in one morning scoop.

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Made in the USA
4.8★ Average Rating

You've Tried Everything.
Your Cycle Is Still Off.

The period that shows up 45 days late — or not at all. The mood swings that come out of nowhere. The feeling that your body is doing something completely different from what you want. You know this feeling.

📅
Irregular Cycles
35, 45, 60-day cycles. Or nothing at all. Never knowing when — or if — it's coming.
😶‍🌫️
Hormonal Mood Swings
Irritable, anxious, exhausted for no reason. Feeling like a different person week to week.
🌸
Fertility Struggles
Tracking ovulation and seeing nothing. Trying for months with no idea if your body is even ovulating.

Sound familiar? You've probably already tried:

Birth control to "regulate" your cycle — that just masked the problem and made things worse when you stopped
Generic inositol capsules that used the wrong ratio and did nothing
Supplements that promised hormone balance and delivered zero results
Doctors who ran bloodwork, said everything looked "normal," and sent you home with no answers

The problem wasn't you. It was that nothing was addressing the real hormonal imbalance underneath.

Terva Labs

The Clinically-Studied Formula Your Hormones Have Been Waiting For

Fertility specialists have recommended inositol for hormonal balance and cycle support for years. Now it's available in a delicious daily drink mix — with the exact 40:1 ratio the research actually points to.

The Correct 40:1 Ratio — Not Just Myo-Inositol Alone
Most brands use myo-inositol alone or an arbitrary blend. We use the 40:1 ratio that mirrors your body's own follicular fluid and matches what clinical research studies.
Complete Hormone Support Stack
We added Omega-3, Magnesium, Zinc, Vitamin D, and DIM — the full stack your hormones need to rebalance, not just the headline ingredient.
A Drink Mix You'll Actually Look Forward To
Pink Lemonade and Strawberry Acai — two flavors that make your daily hormone support feel like a treat, not a chore.
No Synthetic Fillers, No Proprietary Blends
Clean label, third-party tested, GMP certified. Every ingredient is there for a reason and dosed to actually work.
Shop Myo-Inositol Powder →

What Our Customers Are Saying

Thousands of women have made Terva Labs part of their daily routine. Here's what they experienced.

★★★★★

"My cycle came back after 11 months"

I have PCOS and my period had been completely absent for almost a year. My OB mentioned inositol and I found Terva Labs. I was skeptical but within 6 weeks I had my first real period in nearly a year. I cried. My husband cried. I'm now on my third regular cycle in a row and we're actively trying. I tell every woman I know about this.

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Brianna T., 28
Texas · Verified Purchase · Pink Lemonade
★★★★★

"The Strawberry Acai flavor is actually unreal"

I'll be honest — I bought this mostly because the flavor looked good and I was tired of choking down chalky pills. The Strawberry Acai mixed into sparkling water is genuinely something I look forward to every morning. But then around week 5 I realized my mood swings had basically disappeared and I'd had two normal cycles back to back. The taste got me here, the results are keeping me here.

M
Maya R., 31
California · Verified Purchase · Strawberry Acai
★★★★★

"My fertility specialist recommended the exact ratio in this"

I've been seeing a reproductive endocrinologist for 14 months. She specifically told me to look for myo and d-chiro inositol at a 40:1 ratio. I researched every brand I could find and Terva Labs was the only one that got it right AND came as a powder I could actually stomach. My LH surge came back on cycle day 14 for the first time in over a year. My RE was genuinely pleased at our last appointment.

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Amanda T., 33
New York · Verified Purchase · Pink Lemonade
★★★★★

"Tried the cheap inositol capsules first — huge difference"

I'll be real — I bought a generic myo-inositol powder from Amazon first because I didn't want to spend more. Took it for two months, noticed basically nothing. Then I read about the 40:1 ratio and why it matters and understood what I'd been missing. Switched to Terva Labs. Within three weeks my skin was clearer and I could feel my cycle starting to normalize. The research actually matters. You get what you pay for.

J
Jessica L., 29
Florida · Verified Purchase · Strawberry Acai
★★★★★

"My husband noticed the difference before I did"

About three weeks in my husband said "you seem different lately — in a good way." Less irritable, sleeping better, more energy in the evenings. I hadn't even connected it to the supplement yet. Then I realized I hadn't had a single mood swing that week and my bloating was almost completely gone. Month two my cycle came in at 29 days — first time in three years it's been under 35. He bought me a three-month bundle without me asking.

K
Kayla W., 30
Georgia · Verified Purchase · Pink Lemonade
★★★★★

"30 days in and my acne is almost completely gone"

I've had hormonal chin and jaw acne since I was 22. Tried everything — spironolactone, every skincare routine you can imagine. My dermatologist finally mentioned that hormonal acne often signals androgen excess and suggested looking into inositol. One month on Terva Labs and my skin is the clearest it's been in six years. The Strawberry Acai mixed into my morning smoothie doesn't even taste like a supplement. Genuinely obsessed.

T
Tori M., 26
Colorado · Verified Purchase · Strawberry Acai