GABA LP815®

for Women 

Tension and sleep support for women

for prolonged release of GABA

GABA fluctuates throughout a woman’s hormonal transition periods

A woman’s life is characterized by phases of hormonal changes, notably during the menstrual cycle and menopausal transition. These shifts in hormone levels are associated with fluctuations in GABA levels. These changing GABA levels have important implications for mood regulation, sleep, and cognition.1

Among women supplementing with LP815, results demonstrated:

67%

of women reduced stress by week six2

100%

of women reported improved sleep by week six2

proven

decrease in nighttime body heat2

GABA levels across women’s life stages

As women age, GABA levels decrease.3 When we look closer, we find that during hormonally dynamic periods, GABA levels fluctuate.

GABA levels during Menstrual Cycle

GABA levels increase around ovulation then decrease in the premenstrual phase (both the mid luteal and the late luteal phase) which may contribute to tension, irritability, and mood swings.1,4

GABA levels during Menopause Stages

Declining hormones from the perimenopause to post-menopausal transition can reduce GABA concentrations and may lead to sleep disturbances, tension, stress, and mood dysregulation.5

Lactiplantibacillus plantarum LP815: prolonged GABA effect

Lactiplantibacillus plantarum, LP815, a proprietary strain of lactic acid bacteria, was isolated for its ability to deliver prolonged GABA through oral ingestion while working with one’s existing gut microbiota to produce additional GABA.

Benefits
of LP815

for Women2,6

Tension and stress support

Helps reduce irritability

Supports deep, restorative sleep

Promotes restful, temperature-balanced sleep

LP815 for Women: Clinical Substantiation

Explore the clinical research that validates the science behind Verb Biotics’ LP815 solution for women. Our studies highlight a commitment to proven efficacy, measurable outcomes, and a new level of rigor designed to support women’s microbiome and mind-body health.

Clinical Trial Overviews
Study #1 | Stress, Mood, & Irritability | Beneficial Microbes

Overview: This study assessed the impact of Lactiplantibacillus plantarum LP815 on stress.

Study Design: Randomized, double-blind, placebo-controlled, wearable-device clinical trial in 83 healthy adults with mild to moderate anxiety, which included 33 women. The study was conducted over a 7-week period with one week of baseline data followed by 6 weeks of 5 billion CFU of LP815 or placebo use.

Outcomes: LP815 delivered meaningful benefits for women within 4 to 6 weeks, with clear dose-responsive effects. In the study, 67 percent of women significantly reduced their GAD-7 anxiety scores by week 6. Women also experienced notable reductions in feelings of irritability.

Published in Beneficial Microbes, 2025

Read the Study

Study #2 | Sleep Quality | MedRxIV

Overview: This study evaluated whether Lactiplantibacillus plantarum LP815 could improve sleep quality and impact nighttime temperature comfort.

Study Design: Randomized, double-blind, placebo-controlled, wearable-device clinical trial with 139 enrolled healthy adults, which included 71 women, with at least moderate difficulty falling asleep. Participants were assigned to either placebo or 5 billion CFU of LP815 daily for 6 weeks.

Outcomes: Women taking 5 billion CFU of LP815 saw significantly greater improvements in sleep by week 6, with 100% achieving at least a 4-point reduction in their ISI insomnia scores. In contrast, only 43% of women in the placebo group reached that same threshold. Nighttime comfort also improved, with women reporting better temperature regulation throughout the study.

Pre-print published in MedRxIV, 2025

Read the Study

From Labs to Lives: Clinical Results

Significantly Reduced Stress Scores

Women who took 5 billion CFU of LP815 showed a significant reduction in GAD-7 scores from baseline to week 6, lowering the mean GAD-7 score from 10.24 at baseline to 3.56 by week 6 (p < 0.05).

Statistically significant improvements were observed as early as week 4 and continued through week 6, with 67% of participants improving their GAD-7 scores by 5 points or more by week 6.

 

Improved Sleep Quality 

By week 6, all women taking 5 billion CFU of LP815 decreased their Insomnia Severity Index (ISI) score by 4+ points, where only 42.9% of the placebo group improved their ISI score by the same amount (p=0.07).

 

These findings highlight LP815’s ability to support better sleep quality by extending total sleep time, deepening restorative sleep, and reducing nighttime sweating across different stages of life.

Decreased Nighttime Temperature

All women, regardless of age or ethnicity, showed a significant decrease in elevated nighttime body heat over time when taking 5 billion CFU of LP815 (p<0.05).

This improvement in nighttime comfort suggests that LP815 supports a more balanced physiological response during sleep, helping women settle into deeper, more restorative rest.

How does LP815 for women work?

GABA factory

The ability of LP815 to produce GABA itself can be thought of as enabling a GABA factory in the gut.

GI performance

LP815 is derived from a natural Lactiplantibacillus plantarum strain that survives the harsh conditions of the gut to produce GABA.

Consistent and prolonged release

Unlike traditional GABA supplements which deliver a bolus dose of GABA resulting in an immediate but transient spike of GABA levels that is gone in a few hours, LP815 may offer a consistent and prolonged time release of GABA, providing extended and consistent emotional and sleep modulation throughout the day and night.

Lower dosage for greater application flexibility

LP815 at a dose of 5 billion CFU produces 50mg of GABA which is the dose associated with stress, mood, and sleep benefits.1 This low CFU dose enables flexibility when formulating.

Applications

Add in hormonal, premenstrual, and menopause support supplements focused on tension, mood, stress, and sleep. Stack with other function-specific biotics, botanicals, and hormone replacements for a robust symbiotic offering.

 

HORMONAL SUPPORT | PMS SUPPORT | MENOPAUSE SUPPORT

 GRAS  |  Allergen-free | Non-GMO | Produced in USA

Learn more about LP815’s impact on women

Download our LP815 Clinical Brochure

Frequently Asked Questions

What’s the connection between the gut and women’s hormones?

The gut microbiome plays a key role in regulating estrogen metabolism and neurotransmitter balance. A healthy gut supports smoother hormonal transitions and emotional stability. LP815 works through this gut-brain-hormone pathway to support mood, calm, and stress resilience during hormonal changes.

How does LP815 help improve mood balance during hormonal changes?

LP815 enhances natural GABA signaling in the gut, which communicates directly with the brain. This process promotes calm and emotional balance, helping women feel more centered through hormonal fluctuations, such as perimenopause and menopause.

How is LP815 different from standard probiotics for women?

Most women’s probiotics focus on vaginal or digestive health: LP815 targets the gut-brain axis. Its mechanism centers on producing GABA, a calming neurochemical that directly impacts emotional and sleep wellbeing.

Can probiotics really help with menopause symptoms?

Yes! Emerging science links the gut-brain axis to women’s hormonal balance. LP815 supports the body’s natural production of GABA, a calming neurotransmitter that can help ease mood changes, stress, and sleep disruption associated with hormonal shifts, such as menopause.

Is LP815 clinically studied?

Yes! LP815 is supported by real-world research and peer-reviewed data on stress, mood, and sleep outcomes. LP815 is GRAS, non-GMO, and allergen-free, meeting the highest standards of safety and quality. Made in the U.S., LP815 is suitable for use in a variety of dietary supplements. Read the study in full here.

Interested in learning more 
about LP815 for women?

Let's Talk
Sources
  1. Gilfarb, R. A., & Leuner, B. (2022). GABA System Modifications During Periods of Hormonal Flux Across the Female Lifespan. Frontiers in Behavioral Neuroscience, 16, 802530. https://doi.org/10.3389/fnbeh.2022.802530.
  2. Grant, A.D., Erfe, M.C.B., Delebecque, C.J., Keller, D., Zimmerman, N.P., Kazaryan, Amy., Oliver, P.L.., Moos, J., Luna, V., & Craft, N., (2025). GABA Probiotic Lactiplantibacillus plantarum Lp815 improves sleep, anxiety and increases urinary GABA: a randomized, double-blind, placebo-controlled study. https://doi.org/10.1101/2025.04.14.25325830
  3. Tran KH, Luki J, Hanstock S, Hanstock CC, Seres P, Aitchison K, Shandro T, Le Melledo JM. Decreased GABA+ Levels in the Medial Prefrontal Cortex of Perimenopausal Women: A 3T 1H-MRS Study. Int J Neuropsychopharmacol. 2023 Jan 19;26(1):32-41. doi: 10.1093/ijnp/pyac066. PMID: 36146906; PMCID: PMC9850658.
  4. Epperson CN, Haga K, Mason GF, Sellers E, Gueorguieva R, Zhang W, Weiss E, Rothman DL, Krystal JH. Cortical gamma-aminobutyric acid levels across the menstrual cycle in healthy women and those with premenstrual dysphoric disorder: a proton magnetic resonance spectroscopy study. Arch Gen Psychiatry. 2002 Sep;59(9):851-8. doi: 10.1001/archpsyc.59.9.851. PMID: 12215085.
  5. Wang, D., Wang, X., Luo, M., Wang, H., & Li, Y. (2019). Gamma-Aminobutyric Acid Levels in the Anterior Cingulate Cortex of Perimenopausal Women With Depression: A Magnetic Resonance Spectroscopy Study. Frontiers in Neuroscience, 13, 447833. https://doi.org/10.3389/fnins.2019.00785
  6. Grant, A.D., Erfe, M.C.B., Delebecque, C.J., Keller, D., Zimmerman, N.P., Oliver, P.L., Youssef, B., Moos, J., Luna, V., & Craft, N. (2025). Lactiplantibacillus plantarum Lp815 decreases anxiety in people with mild to moderate anxiety: a direct-to-consumer, randomised, double-blind, placebo-controlled study. Beneficial Microbes (published online ahead of print 2025). https://doi.org/10.1163/18762891-bja00073