Big Sister Monthly Refills

$0.00
Big Sister Monthly Refills

Big Sister Monthly Refills

$0.00

Big Sister Hormone Balance Starter Kit

Studied Ingredient
for PCOS

Big Sister supports hormonal balance, menstrual regularity, and healthy ovulation with the clinically studied 40:1 Myo-Inositol + D-chiro Inositol formula.

New
$0.00 $0.00

30-day supply delivered monthly.

Pause or cancel anytime.

Buy Once for $34.99 + $3 shipping

Research suggests up to 90 days to notice most benefits.

Benefits
  • Hormonal Balance
  • Menstrual Regularity
  • Healthy Ovulation
  • Metabolic Support
Formulated specifically for women with PCOS
Ingredients
2000 mg Myo-Inositol (MI)
50 mg D-Chiro-Inositol (DCI)
Formulated in the clinically studied 40:1 ratio.

Inside the Jar
90 Capsules
30 servings (3x capsules per serving)
Third-party testing

Tested for purity and safety. Screened for heavy metals, harmful bacteria, and contaminants. Meets strict quality standards with transparent labeling.

View Third Party Test Results
Gluten-free Vegan Non-GMO Sugar-free No Artificial Additives
30-Day Money Back Guarantee
Ships Within 1 Business Day
Made In USA

What’s Included:

30-Day Refill Pouch

90 capsules (30-day supply) formulated to support hormone balance.

Reusable Jar

A refillable jar designed for your daily routine. Store, organize, and stay consistent with ease.

Hormone Support Guide

A guide to help you understand your hormones, build better habits, and get the most out of your routine.

Strong Support.
Simple Science.

Hormonal health is complex, personal, and often misunderstood. Big Sister exists to make it clearer.

Your Hormones Aren’t a 12-Step Routine

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Early Customer 5-Star Reviews

Backed by science, loved by real customers

★ ★ ★ ★ ★
“I appreciate that this doesn’t feel like another trendy wellness product. The formula is straightforward, third-party tested, and actually explains what’s inside and why it’s there.”
Danielle K. Verifed Customer
★ ★ ★ ★ ★
“I’ve tried a few inositol brands before, but this is the first one that actually felt easy to stick with. No weird aftertaste, no giant capsules, and I love knowing the ratio is the one studied for PCOS.”
Sarah M. Verifed Customer
★ ★ ★ ★ ★
“I joined the test group because I’ve struggled finding supplements I trust. This one feels thoughtful, high quality, and way less intimidating than most hormone products I’ve seen.”
Priya L. Verifed Customer
★ ★ ★ ★ ★
“I tested this as part of the first group and it immediately stood out from other inositol products I’ve tried. No weird taste, no giant pills, just something that felt simple to stay consistent with.”
Nicole T. Verified Customer
★ ★ ★ ★ ★
“I appreciate that this doesn’t feel like another trendy wellness product.”
Danielle K. Verified Customer
★ ★ ★ ★ ★
“I was in the first beta group and after trying it, I understood the difference right away. It felt more intentional and higher quality than most hormone products I’ve seen.”
Leila N. Verified Customer

Inositol is proven to deliver results. Big Sister makes it easy.

The MI-DCI difference: Benefits that build over time

Results you can feel in as little as 30 days.

Month 1

Supports Blood Sugar & Craving Control

  • Helps improve insulin signaling
  • Reduces post-meal blood sugar spikes
  • Fewer sugar cravings
Month 2

Promotes Hormonal Balance & Cycle Support

  • Supports ovarian function*
  • Helps regulate LH: FSH ratio*
  • Some women begin noticing more predictable cycles
Month 3

Ovulation, Fertility & Metabolic Health

  • Supports more consistent ovulation*
  • Improves egg quality markers*
  • Supports healthy cholesterol and triglyceride levels*

How to Use:

Take 3 capsules daily, preferably in the morning

Frequently Asked Questions

Take 3 capsules once daily, preferably in the morning with water. For additional support, you may take up to 2 servings (6 capsules) per day, or as directed by your healthcare professional.

Sustainably delivered, monthly.

40:1 Inositol Starter Kit

Complimentary with your first order.

Refillable Jar
Bonus gift
PCOS Support Guide
Bonus gift
MI-DCI Daily Capsules
30-day supply • 60 capsules

Sustainable Refills

Recurring orders, on your schedule.

1 Month Delivery
30-day supply • 60 capsules
Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven Science-Informed, Not Trend-Driven