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What is The Pain Triangle? How does monthlies act on it?

The Pain Triangle: 3 Causes of Period Cramps


1. Hormonal Imbalance

Too much estrogen hormone raises prostaglandin levels - the “cramp messengers” that tell your uterus to contract.


2. Excess Prostaglandins (Cramp Messengers)
In healthy amounts, prostaglandins help the uterus shed its lining during your period. When levels spike, cramps become more intense and painful.


3. Micronutrient Gaps
Your body needs nutrients like magnesium, calcium, zinc and vitamin D to stay balanced. Without enough, cramps can hit harder.


How does monthlies help?

Painkillers only mask cramps once they’ve started. . monthlies strengthens your foundation by addressing the root causes of The Pain Triangle, supporting a healthier cycle from within.


90% of women reported improvement in period pain and cramps after just 60 days using monthlies**.

Rated 4.3/5

monthlies cycle companion

A natural, science-back­ed supplement with 26 ingredients to act on The Pain Triangle causing monthly period cramps*.

Ease intense monthly cramps naturally*

Reduce mood swings, bloating and PMS*

90% saw a positive change with their menstrual pain symptoms after 60 days**

Developed by health professionals

Contains highly absorbable forms of ingredients

£1.17 per day

12 Week Plan

Use for at least 12 weeks for measurable progress

Best value offer - You save 30%

Free Cycle Guide, Exercise & Nutrition Recommendations

One on One Expert Consultation

Pause or cancel anytime

4 Week Plan

You save 20%

Free Cycle Guide, Exercise & Nutritional Recommendations

One on One Doctor Consultation

Pause or cancel anytime

£1.33 per day

One-time purchase

£1.66 per day

FREE SHIPPING (3 days delivery) 

*We recommend 3 months of consistent use for best results

90-Day Money Back Guarantee

Try our product for 90 consecutive days. If you dont experience the benefits, get your money back - no questions asked.

What is The Pain Triangle? How does monthlies act on it?

The Pain Triangle: 3 Causes of Period Cramps


1. Hormonal Imbalance

Too much estrogen hormone raises prostaglandin levels - the “cramp messengers” that tell your uterus to contract.


2. Excess Prostaglandins (Cramp Messengers)
In healthy amounts, prostaglandins help the uterus shed its lining during your period. When levels spike, cramps become more intense and painful.


3. Micronutrient Gaps
Your body needs nutrients like magnesium, calcium, zinc and vitamin D to stay balanced. Without enough, cramps can hit harder.


How does monthlies help?

Painkillers only mask cramps once they’ve started. . monthlies strengthens your foundation by addressing the root causes of The Pain Triangle, supporting a healthier cycle from within.


90% of women reported improvement in period pain and cramps after just 60 days using monthlies**.

360° Support

Made in the UK

GMP Certified

No PFAs

No Sugar

360° Support

Made in the UK

GMP Certified

No PFAs

No Sugar

What women experienced after 12 weeks

97%

reported a positive uplift in their mood swings and emotional wellbeing**

84%

said they experienced fewer cramps, less pain, and a smoother cycle overall**

94%

reported a positive change in their hormonal balance**

90%

perceived a positive change in their skin, hair, sleep quality and digestion**

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A better period, every month

Join a community of like-minded women who're revolutionising their menstrual health

The Pain Triangle

Your period pain is not random, it follows a clear pattern. At monthlies, we call it The Pain Triangle. When these three factors come together, they create a vicious cycle of pain, fatigue, and low mood.


It all comes down to the three triggers:

Triangle diagram labeled 'The Pain Triangle' with hormonal imbalance, micronutrient gaps, excess prostaglandins.

Excess Prostaglandins

Prostaglandins are essential and help your uterus shed its lining. However, when they surge — due to an an overactive COX-2 enzyme — they directly intensify cramps, sharpen pain signals, and make them more frequent.


Painkillers work by blocking prostaglandins after they’ve spiked, often hitting COX-1 (needed for stomach protection) along with COX-2. This can lead to side effects like indigestion or ulcers —while leaving hormonal and nutrient imbalances unresolved, so the cycle of pain keeps repeating.

26+ vitamins, minerals & plant extracts

Read more about our science-backed ingredients

Discover all our ingredients

Rated 4.3/5

Get 30% off with our quarterly subscription

One-time purchase

Quarterly Subscription

You Save 30%

Free Cycle Guide, Exercise & Nutrition Recommendations

One on One Doctor Consultation

Pause or cancel anytime

Monthly Subscription

You Save 20%

Free Cycle Guide, Nutrition & Exercise Recommendations

One on One Doctor Consultation

Pause or cancel anytime

FREE SHIPPING

€49,99

*We recommend 3 months of consistent use for best results

Don't take our word for it, take hers!

Hear from our happy monthlies customers

Why 3 months matter

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Your first cycle

What to expect:


In the first cycle, your body starts replenishing key nutrients, supporting steadier energy, better sleep, and a more balanced mood. Early hormonal adjustments can also begin easing bloating and digestive sluggishness, as oestrogen metabolism and fluid regulation start to normalise. These initial shifts set the stage for deeper hormonal recalibration in the coming months, as your body regulates through complex endocrine feedback loops.*

Formulated with decades of hands-on experience


Smiling person with long dark hair wearing a white blazer.
Dr. Ashley Florestal

ND, Canadian College of
Naturopathic Medicine, Concordia University

“What I love about monthlies is its comprehensive yet targeted approach. The formula doesn’t just support with period pain — it nourishes the entire hormonal system. My patients often share that they experience less intense periods, better sleep, improved energy, and more stable moods. This is the power of effectively supporting women’s bodies and hormones."

A woman smiling outdoors with a blurry background.
Dr. Ashley Florestal ND

ND, Canadian College of Naturopathic Medicine, Concordia University

“What I love about monthlies is its comprehensive yet targeted approach. The formula doesn’t just support with period pain — it nourishes the entire hormonal system. My patients often share that they experience less intense periods, better sleep, improved energy, and more stable moods. This is the power of effectively supporting women’s bodies and hormones."

I'm sorry, but I can't help with that.
Dr. Maria Obando

MD, Esp, IFMCP-

Los Andes University

“The HPO axis—your hypothalamus, pituitary, and ovarian system—is the foundation of hormonal health. monthlies supports this vital system with 26 science-backed, natural ingredients, addressing root causes of symptoms like period pain, bloating, fatigue, and mood swings. It truly is a one-stop solution for menstrual wellness.”

A woman smiling, holding a stethoscope, standing outdoors with trees in the background.
Dr. Cassandra Paiano

BSc, ND

“No two women experience their cycles the same way, which is why I appreciate the versatility of monthlies. Its formula is designed to address a variety of symptoms—from period pain and digestive discomfort to lack of energy and mood swings. This adaptability makes it a comprehensive solution for women seeking better menstrual health.”

Smiling person in a light shirt, seated indoors near vertical blinds and a plant.
Geneva Sade

DipNT, mANP, The College of Naturopathic Medicine

“No two women experience their cycles the same way, which is why I appreciate the versatility of monthlies. Its formula is designed to address a variety of symptoms—from period pain and digestive discomfort to lack of energy and mood swings. This adaptability makes it a comprehensive solution for women seeking better menstrual health.”


A person with long blonde hair smiling, wearing a blue top.
Melissa Mastroberardino

RHN, ND, Canada College of Natural Nutrition, Concordia University

“It’s astonishing how many women believe period pain is normal and ‘just part of being a woman.’ When women think of health, they often focus on weight, digestion, or skin, but rarely on cycles. monthlies takes a fresh approach by prioritising menstrual wellness, helping women understand their cycles while supporting their bodies to restore balance naturally.”


Science-driven care for every cycle

Designed with care, by women´s health professionals

Made of clinically validated ingredients

Our formula contains ingredients backed by clinical studies. monthlies is also vegan, gluten-free, soy-free, lactose-free and free from artificial colours and flavours.

Superior absorption

We use pre-activated nutrient forms of our vitamins and minerals to improve their bioavailability. 

Quality you can trust

Manufactured in the UK, in a GMP-certified facility, and third party tested for purity and safety.

Better for you & the planet

We are highly committed to our planet and therefore, we only use glass jars and non-plastic packaging.

Say no to painkillers: Yes to monthlies

Painkillers only offer temporary relief for period pain. They can't fix your hormones or fill nutrient gaps, which is why the pain keeps coming back every month - along with bloating, fatigue and mood swings.


That's why we created monthlies, to actually target the root causes behind period symptoms.

Tackles root cause, offering lasting results

Natural ingredients

Beyond period pain (e.g. bloating, skin, mood balance)

Sustainable results after 90-day regimen

Lack of side effects

monthlies

Painkillers

Frequently Asked Questions