Real women with PMS & PMDD tested Foundational supplement for 2 months
100%
reported improved digestive symptoms, including bloating
90.5%
reported improved mood, in their luteal phase
"I noticed my digestion improved, but what surprised me most was how much more steady my mood felt."
Foundational Cycle + Microbiome Support
A daily gut microbiome supplement for PMS support formulated with clinically studied
- PostbioticÂ
- Prebiotic
- Multivitamin
- Omega-3Â
A 4-in-1 supplement that supports the communication between the gut, hormones, and brain, a connection we call the Premenstrual Pathway.Â
Benefits:Â
-
Supports mood, sleep quality, a healthy stress response and healthy skin appearance (including in the luteal phase)
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Supports normal estrogen metabolism
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Supports nutrient pathways for normal hormone signaling & neurotransmitter function
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Supports digestive comfort, GI regularity, and reduction of occasional gas and bloating
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Supports microbiome diversity and gut barrier integrity*
*This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Produced in small batches—subscribe to reserve your next few months' supply before we sell out.
Don't just "deal with it"
PMS is not normal
How Foundational supports your cycle
#1
Emotional Regulation
Supports gut-brain signaling related to mood and stress response. The gut produces about 90% of the body's serotonin, the neurotransmitter closely associated with mood stability. During the luteal phase, disruptions in gut microbiome composition can affect serotonin availability and amplify the brain's sensitivity to normal hormonal shifts. Foundational supports the gut environment that healthy neurotransmitter production depends on.*
#2
Gut health
Supports digestion, microbiome diversity, and GI comfort. Bloating, cramping, and digestive disruption are among the most commonly reported premenstrual symptoms, and among the first to improve in our beta study, where 100% of participants reported better digestive comfort. Foundational combines a targeted postbiotic, a prebiotic that feeds beneficial bacteria, and an omega-3 to reduce gut inflammation, supporting a microbiome that functions well across the entire cycle.*
#3
Hormonal pathways
Supports normal estrogen metabolism via the gut-estrogen axis. A healthy gut microbiome plays a direct role in how the body processes and clears estrogen. The estrobolome, the collection of gut bacteria responsible for estrogen metabolism, helps regulate circulating estrogen levels throughout the cycle. Foundational supports a balanced estrobolome, contributing to the healthy hormonal environment your body works to maintain each month.*
Meet our Medical Advisors
Leaders in Gynaecology, Endocrinology and Psychiatry
Dr. Roohi Jeelani, MD, FACOG
Dr. Roohi Jeelani is a double board-certified Reproductive Endocrinology and Infertility (REI) specialist, nationally recognized for her leadership in fertility care and women’s health innovation. As both a physician and former fertility patient living with PCOS, Dr. Jeelani brings a rare combination of clinical expertise, scientific insight and personal understanding to every aspect of patient care.Â
As a founder of Onto Health, Dr. Jeelani takes a proactive, patient-centered approach that integrates personalized care with evidence-based medicine.Â
Dr. Niyati Dhand, MD
Dr. Niyati Dhand is a double fellowship-trained, double board-certified reproductive psychiatrist specialising in the treatment of mental health through the reproductive lifespan: pre-conception, infertility and loss, pregnancy, postpartum and perimenopause.Â
As the founder of Alaire Psychiatry, Dr. Dhand's mission is to improve the quality of life for women navigating mental health during pivotal hormonal transitions, from pre-menses and preconception through perimenopause. After struggling personally with infertility and perinatal loss, she is both personally and professionally positioned to offer authentic empathy and a deeper understanding to her patients.Â
If your luteal phase is getting in the way of life
This is where you start.
Need help?
FAQ
Most people notice subtle changes in digestion, mood within 1–2 cycles.
We recommend evaluating over 2–3 cycles for full results. The gut-brain-hormone pathways take time to adapt, consistency is everything.
Foundational is designed for anyone who experiences premenstrual symptoms — from mild PMS to more intense patterns like PMDD. It supports the underlying systems involved.
Pinkmatter's Foundational Cycle + Microbiome Support doesn't just mask symptoms, it supports the systems behind them. We focus on the Premenstrual Pathway: how your gut microbiome communicates with your hormones and brain.
Our evidence-informed formula supports both the gut-brain and gut-estrogen axes, so you're working with your biology, not against it.
Your gut microbiome helps regulate mood, sleep, digestion, and even estrogen metabolism. When your gut is inflamed or imbalanced, that communication breaks down, amplifying PMS symptoms. Supporting gut health helps your hormones and brain "talk" more clearly, so you feel more like yourself.
A blend of clinically validated postbiotic + prebiotic, plus micronutrients and omega-3s that support:
- Mood, sleep quality, a healthy stress response and healthy skin appearance (including in the luteal phase)
- Normal estrogen metabolism
- Nutrient pathways for normal hormone signaling & neurotransmitter function
- Digestive comfort, GI regularity, and reduction of occasional gas and bloating
- Microbiome diversity and gut barrier integrity
Take two capsules daily, with a meal and water.
Because the microbiome thrives on consistency, we recommend taking it at roughly the same time each day (morning or evening). If you're sensitive to supplements, start with one capsule for the first week, then increase to two. Hydration, fiber, and regular meals all support the formula's effectiveness.
Yes. Pinkmatter supports your gut, brain and hormonal communication whether you're on or off hormonal birth control. It doesn't alter hormone levels, it helps balance the systems that influence how you feel.
Pinkmatter is evidence-informed, built from peer-reviewed research on the microbiome's role in hormonal and mood regulation. The Foundational Cycle + Microbiome Support has ingredients like the postbiotic that is clinically validated for safety and efficacy for reproductive health. We're committed to scientific transparency and are building toward clinical validation as we grow.
Founded by a female scientist with lived experience of severe PMS, Pinkmatter was born from frustration with how women's health has been dismissed and lacking innovation.
Our mission: to replace normalization of suffering with real, biology-based care.
No dietary supplements are FDA-approved. However, Pinkmatter is produced in a cGMP-certified facility in the USA, ensuring rigorous quality, purity, and safety standards.
The Foundational Cycle + Microbiome Support isn't a magic bullet, it's a partner. It helps your gut do its job better, but your daily choices still matter. Nourishing meals, movement, and rest all give your microbiome the raw materials it needs to support your hormones and mood.
Together, that's how you build true cycle comfort.
We're more than a supplement brand, we're a movement. Expect education, community, and tools that make evidence-based cycle care accessible, respectful, and real.