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✓
Four cycle-specific formulas
✦
Supports cellular energy
90
90-day money-back guarantee

4.88

from

142

reviews

| 600,000+ servings sold

Cycle-Synced Daily Support
Cycle Bestie
19 ingredients, 4 unique formulas, 1 daily capsule. Developed with a team of clinicians and formulators in women's hormone health. Formulated and developed by a world-class scientific team and formulators specializing in women’s hormone health
✓ Supports mitochondrial health
✓ Four phase-specific formulas
✓ 90-day money-back guarantee

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1-Month Supply


$2.49/day

$

74.8

/month

PAY FOR 3 AND GET 4

3-Month Supply

Pay for 3 Months

$2.34/day

$

70.4

/month

PAY FOR 5 AND GET 6

6-Month Supply

Pay for 5 Months

$2.20/day

$

66.0

/month

1-MONTH SUPPLY

$2.49/day

$

74.8

/month

PAY FOR 3 AND GET 4

$2.34/day

$

70.4

/month

PAY FOR 5 AND GET 6

$2.20/day

$

66.0

/month

19 ingredients, 4 unique formulas, 1 daily capsule. Developed with a team of clinicians and formulators in women's hormone health. Formulated and developed by a world-class scientific team and formulators specializing in women’s hormone health
✓ Supports mitochondrial health
✓ Four phase-specific formulas
✓ 90-day money-back guarantee

Subscribe & Save

Subscribe & Save:

30-Day Supply

SAVE 15%
$2.49/day

Billed $74.80 every month

1 MONTH SUPPLY
✓ 15% off your first month
✓ FREE copy of Biohack Like a Woman ($28 value)
✓ 1 month of Bestie app access, including Aggie AI
✓ 1 monthly call with a naturopathic doctor
✓ 1 monthly call with Aggie
✓ Skip, pause or cancel anytime
✓ 90-day money-back guarantee
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120-Day Supply

SAVE 20%
$2.34/day

Billed $211.20 every 3 months

4-Months Supply
✓ 1 extra month FREE — $88 value
✓ FREE copy of Biohack Like a Woman ($28 value)
✓ Free Bestie Bottle ($39 value)
✓ FREE 4 months of Bestie app access including Aggie AI — $96 value
✓ FREE 4 months of monthly calls with a naturopathic doctor — $499 value
✓ FREE 4 months of monthly calls with Aggie — $399 value
✓ Skip, pause or cancel anytime
✓ 90-day money-back guarantee
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180-Day Supply

SAVE 25%
$2.20/day

Pay for 5 months and get 6 months supply, delivered every 6 months

6-Months Supply
✓ 1 extra month FREE — $66 value
✓ FREE copy of Biohack Like a Woman ($28 value)
✓ FREE 4 months of Bestie app access including Aggie AI — $96 value
✓ FREE 4 months of monthly calls with a naturopathic doctor — $499 value
✓ FREE 4 months of monthly calls with Aggie — $399 value
✓ Skip, pause or cancel anytime
✓ 90-day money-back guarantee

1-Month Supply

$

$2.49/day

/day

$

74.8

/month

20

% off

1-month supply delivered every 30 days

15% off your first month

FREE copy of Biohack Like a Woman ($28 value)

1 month of Bestie app access, including Aggie AI

1 monthly call with a naturopathic doctor

1 monthly call with Aggie

Skip, pause or cancel anytime

90-day money-back guarantee

Renews at $74.80 every month.

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$88.00
✓
Four cycle-specific formulas
✦
Supports cellular energy
90
90-day money-back guarantee

90-Day Customer Survey

0%

would recommend to a friend

0%

are happy with Cycle Bestie

0%

noticed better energy, mood or skin

0%

say it beats other cycle supplements

Answers from people using Cycle Bestie for more than 90 days. Customer survey, n=28, Sept–Oct 2026. Individual results vary.

Survey results reflect the participants studied. Individual results vary.

Subscribers Exclusive Access
The 120-Day Bestie Transformation
Four months inside the Bestie App: training, food, and the people who answer your questions.
Ask Aggie AI
Ask Aggie AI
Scan your plate, get your macros in seconds.
Dr. Lauren Lehry
Dr. Lauren Lehry, ND, LMT
4 calls with a naturopathic doctor.
Aggie Lal
Aggie Lal
4 calls with Aggie. Founder of Biohacking Bestie and author of Biohack Like a Woman.
Biohacking Recipes
Biohacking Recipes
400 recipes: fibre, protein, fat, then carbs in every single one.
Strength + Pilates
Strength + Pilates
300 workout videos synced to your cycle tracker.
Bestie App Access
Cycle Tracker
Track your cycle, movement, sleep, nutrition and more — all in one place.
Tolstoy Debug Test
Product: Cycle Bestie
Product ID: 9220704633132
Tags: all, All Products, Cycle Bestie, Cycle Bestie Pre Order, Live 2025, Non-Course

INDEPENDENTLY CERTIFIED

Good Manufacturing Practice
FDA Registered Facility
NSF
Based in the USA
Good Manufacturing Practice
FDA Registered Facility
NSF
Based in the USA

The science, actually

Your cycle, explained.

Three hormones run the whole show. Here is what they do across your 28 days, and why each phase gets its own formula.

01 · MENSTRUAL 02 · FOLLICULAR 03 · OVULATORY 04 · LUTEAL estrogen peaks ovulation progesterone peaks. an invitation to go inward. day 1 day 8 day 15 day 22 day 28 Estrogen Progesterone LH surge

Curves reflect typical published reference ranges across a 28-day cycle; individual levels vary.

The full cycle

Hero ingredient

MitoPrime® (L-Ergothioneine) — in every phase as your base.

L-Ergothioneine (MitoPrime®)

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.

Ingredients backed by 1,000+ clinical studies

Cute branding, serious science

Our key ingredients have been studied in human trials for female health.

19 ingredients across 4 phase formulas

Not just one pill for the whole month

Third-party tested

GMP certified, made in the USA, and independently verified for purity and potency

Built for female biology

Four formulas matched to the four phases of your cycle

Founded by Aggie Lal

Biohack Like a Woman, translated into 12 languages and a bestseller in over 10 countries

Inside Cycle Bestie

What it is:

Why we use it:

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.

90-Day Customer Survey

It gets better with time.

The women taking Cycle Bestie for 3+ months scored dramatically higher across the board. Give it a few cycles.

0%

would recommend to a friend

0%

are happy with Cycle Bestie

0%

noticed better energy, mood or skin

0%

say Cycle Bestie is better than other cycle supplements they tried

The longer they take it, the better it gets

Everyone surveyed vs. women on Cycle Bestie for 3+ months.

Would recommend to a friend 0% → 0%
Gave a perfect 10 0% → 0%
Are happy with the product 0% → 0%
Felt improvement 0% → 0%
More energy 0% → 0%
Saw improvement in skin 0% → 0%

*3+ months reflects the 28 customers who had taken Cycle Bestie for 3 months or more, out of 48 surveyed September–October 2026. Individual results vary.

Survey results reflect the participants studied. Individual results vary.

WHAT TO EXPECT

Every body is different, and results can vary — but here's what most of our besties experience:

First Cycle
Subtle but meaningful shifts like less bloating, improved energy, or better mood during challenging phases.
After 2–3 Cycles
Reduced PMS symptoms, clearer skin, steadier energy, and improved cycle predictability.
After 3-6+ Cycles
Long-term support for hormone balance, stress resilience, and a healthier relationship with your cycle.

How To Use

Take 1 capsule daily, following the cycle-specific blister packs to align with each phase of your menstrual cycle. Results are most noticeable with consistent daily use.

If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use.

How to Start

When do you start Cycle Bestie?

Find your cycle day in seconds with the calculator. Day 1 is the best, the easiest place to begin Cycle Bestie but you can start any day.

How it works

01

Step 1

Find your cycle day. Day 1 is the first day of your period. Count forward, or use the calculator above.

02

Step 2

Take one capsule a day. Pair it with something you already do daily, like breakfast. Through Day 28.

03

Step 3

Let your period reset you. When your next period starts, that's Day 1 again.

Questions, answered

Do I have to wait for my period to start? +

Nope. Find today's cycle day and start there. Your next period puts you perfectly in sync.

What if my period comes before Day 28? +

That's your new Day 1. Keep taking one capsule a day and start counting from 1 again.

What if I reach Day 28 and my period hasn't come? +

Take a little break. When your period starts, that's Day 1, and you're back on. A few days off is completely normal.

I don't remember when my last period started. +

Start today on your best guess, or wait for your next period and start on Day 1. Either way, you'll be in sync by your second cycle.

My cycle changes every month. Does that matter? +

Not at all. You never have to predict anything, because your period is your reset button.

I missed a capsule. What now? +

Just take today's capsule as usual. No need to double up.

My period is really late. +

If it's 7 or more days late, take a pregnancy test before you restart.

Can I take it on birth control, postpartum, during perimenopause or after menopause, or if I don't get a period? +

Talk to your healthcare provider about whether Cycle Bestie is right for you.

I'm pregnant, breastfeeding, trying to conceive, or on medication. +

Check with your healthcare provider before starting.

My periods are really painful or irregular. +

Your period is your fifth vital sign, and painful periods are not normal. They're worth a conversation with your doctor.

What are the four phases? +

Think of them as inner seasons. Inner Winter (Days 1–7) is your period: rest and reflect. Inner Spring (Days 8–11) brings rising energy, so start the thing. Inner Summer (Days 12–15) is ovulation and peak magnetism. Inner Fall (Days 16–28) turns you inward: finish, nest, protect your peace. These ranges assume a 28-day cycle, so yours may shift a little.

Do I need to track my cycle? +

You don't have to, but you'll love it. Track your cycle, symptoms, and seasons in the Bestie app, which is included in your subscription.

This calculator is for fun and general wellness info only, not medical advice. Talk to your provider about your cycle.

Customer Reviews

Based on 142 reviews
72%
(102)
15%
(22)
6%
(9)
3%
(4)
4%
(5)
J
Jenn (United States)
Menstrual Migraines Lessened

I struggled with debilitating menstrual migraines for years. After taking cycle bestie my once 5-7 day migraine turned into one day of a manageable headache. This is a miracle worker! Prior to this I had tried everything including many many supplements, changing my diet, HRT, and more and nothing helped my migraines like this. I have recommended to many friends!

S
SF
Regular BBT and Earlier Ovulation

I started Cycle Bestie hoping it would help with other symptoms. After 2 cycles, the difference started to show. Next to where I was before, those symptoms are much better now. My skin is about the same, and my energy throughout my cycle is about the same. This is the first supplement I've tried for cycle or hormone health. Which phase pack helped the most, I'm not sure.

More regular BBT and earlier ovulation

A
AB
More in Tune With My Body

My reason for trying Cycle Bestie were breakouts, low energy, an irregular cycle and headaches or migraines around my period. It was after 3 or more cycles that things started to shift for me. Next to where I was before, those symptoms are somewhat better now. Energy wise I am much higher throughout my cycle, and my skin is somewhat better. Compared to other supplements I've tried for cycle or hormone health, Cycle Bestie is somewhat better. If I had to pick one, the Ovulatory pack helped me the most.

The biggest change has been becoming more in tune with my body. I’ve learned to recognize patterns in my energy, cravings, mood, and overall well-being throughout my cycle.

A
Agata
Finally Understanding My Cycle

Cramps, bloating and poor sleep were what brought me to Cycle Bestie. I first noticed a difference after 3 or more cycles. Those symptoms are somewhat better than they were before Cycle Bestie. Across my cycle my energy is somewhat higher, and my skin is somewhat better. Against the other cycle and hormone supplements I've used, Cycle Bestie is much better. Luteal was the pack that did the most for me.

I feel like I finally understand why I feel different at different times of the month. Cycle Bestie has helped me listen to my body instead of fighting against it.

B
Barbara
I Understand My Patterns Now

What I was hoping Cycle Bestie would help with were bloating, poor sleep and other symptoms. The difference showed up during my first cycle. Next to where I was before, those symptoms are somewhat better now. My energy levels throughout my cycle are somewhat higher, and my skin is somewhat better. Compared to other supplements I've tried for cycle or hormone health, Cycle Bestie is somewhat better. If I had to pick one, the Follicular pack helped me the most.

I’m more aware of my patterns now, especially with cravings, energy, and mood. Instead of feeling like those changes are random, I understand that they can be connected to my cycle.

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