Home Ingredients BloomEase™ (Yarrow + Marine Magnesium for PMS)
Women's Health

BloomEase™ (Yarrow + Marine Magnesium for PMS)

Evidence Level
Limited
2 Clinical Trials
4 Documented Benefits
2/5 Evidence Score

BloomEase™ is a yarrow (Achillea millefolium) + marine magnesium combination from Nexira (France), launched in 2026 for PMS support. A Nexira real-life study in 167 women reported benefits on menstrual discomfort, mood, and quality of life. Specific dose and trial design have not been published in peer-reviewed literature.

Studied Dose Specific mg/day dose not yet published in peer-reviewed sources. Nexira describes a 'low daily dose' positioning. Reference doses from independent literature: magnesium 250 mg/day, yarrow 1-3 g/day dried herb traditional use.
Active Compound Yarrow (Achillea millefolium) + Marine magnesium

Benefits

Real-life study in 167 women across menstrual cycles

Nexira ran a real-life observational study in 167 women across menstrual cycles, reporting benefits on three pillars: menstrual discomfort, mood and energy, and quality of life. This is real-world observational data rather than a randomized placebo-controlled trial — the methodology limits causal inference but supports tolerability and user-reported benefit at the marketed dose.

Supported by Trial 1

Coverage before and during menstruation

Positioned as a single ingredient supporting both PMS phase (luteal, before menstruation) and dysmenorrhea phase (during menstruation), addressing emotional symptoms in the lead-up and physical cramping during. Most PMS-targeted ingredients address one phase or the other.

Supported by Trial 2

Magnesium for PMS — independent evidence

Independent of BloomEase™, magnesium at 250 mg/day has shown benefit for PMS symptoms in placebo-controlled trials (Walker 1998; Quaranta 2007 Sincromag modified-release 250 mg study reported 35% reduction in total PMS scores). Marine magnesium is one of several available forms; head-to-head comparison data on absorption vs other forms is limited.

Supported by Trial 2

Yarrow for menstrual discomfort — traditional use

Achillea millefolium has a long traditional-use history for menstrual discomfort across European herbal medicine. Active compounds include chamazulene, flavonoids (apigenin, luteolin), and sesquiterpene lactones with documented smooth-muscle antispasmodic activity in preclinical models. Modern human clinical evidence on yarrow specifically remains limited.

Supported by Trial 1, Trial 2

Mechanism of action

1

Magnesium muscle relaxation and neuromuscular signaling

Magnesium is a cofactor in over 300 enzymatic reactions and is a natural calcium antagonist at smooth muscle. Adequate magnesium status supports relaxation of uterine smooth muscle, which may contribute to reduced cramp severity.

2

Magnesium and mood regulation

Magnesium plays a role in serotonergic signaling, NMDA receptor modulation, and HPA axis regulation. Low magnesium status is associated with mood symptoms; supplementation may modulate the mood-related dimension of PMS, though effect sizes in clinical trials are modest.

3

Yarrow antispasmodic compounds

Apigenin, luteolin, and sesquiterpene lactones in yarrow have demonstrated smooth-muscle antispasmodic activity in preclinical models — the proposed basis for traditional menstrual cramp use.

Clinical trials

1
Nexira BloomEase™ Real-Life Study (n=167)

Real-life observational study in 167 women across menstrual cycles, reporting benefits on three pillars: menstrual discomfort, mood and energy, and quality of life.

167 women

Real-life observational study in 167 women across menstrual cycles, reporting benefits on three pillars: menstrual discomfort, mood and energy, and quality of life. This is observational data without placebo control, limiting causal inference. Specific design, primary endpoint, and statistical analysis are not yet published in peer-reviewed literature as of this writing.

2
Magnesium for PMS — Independent Literature

Placebo-controlled trial reported magnesium 200 mg/day modestly reduced PMS symptoms.

Clinical population described in trial publication.

Placebo-controlled trial reported magnesium 200 mg/day modestly reduced PMS symptoms. Sincromag (modified-release magnesium 250 mg) open-label trial reported ~35% reduction in total PMS scores. Evidence is mixed across the broader literature; single-nutrient effects are typically modest. These are independent magnesium studies, not BloomEase™ specifically.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated.
Mild GI distress (rare; magnesium-related loose stools possible at high doses).
Allergic reactions to Asteraceae family (yarrow) rare.
Bleeding theoretical at high yarrow doses (modest antiplatelet activity).
Iodine effects from marine source minor at supplemental doses.

Important Drug interactions

Anticoagulants — yarrow has modest antiplatelet effects; theoretical bleeding risk.
Antiplatelets — same.
Diuretics — magnesium content interacts with potassium-sparing diuretics; monitor.
Tetracyclines, fluoroquinolones — magnesium reduces absorption; separate by 2 hours.
Pregnancy — yarrow contraindicated in pregnancy (uterotonic effects); avoid BloomEase during pregnancy.
Lactation — yarrow limited safety data; avoid supplementation.
Antihypertensives — magnesium has modest BP effects.

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Frequently asked questions about BloomEase™ (Yarrow + Marine Magnesium for PMS)

What is BloomEase?

BloomEase™ is a yarrow (Achillea millefolium) + marine magnesium combination from Nexira (France), launched in 2026 for PMS support. A Nexira real-life study in 167 women reported benefits on menstrual discomfort, mood, and quality of life.

What is BloomEase used for?

BloomEase is researched primarily for Women's Health. Nexira ran a real-life observational study in 167 women across menstrual cycles, reporting benefits on three pillars: menstrual discomfort, mood and energy, and quality of life.

What is the recommended dosage of BloomEase?

The clinically studied dose is Specific mg/day dose not yet published in peer-reviewed sources. Nexira describes a 'low daily dose' positioning. Reference doses from independent literature: magnesium 250 mg/day, yarrow 1-3 g/day dried herb traditional use. Always follow the product label and check with a healthcare provider for personal advice.

Is BloomEase safe, and does it have side effects?

For most healthy adults, BloomEase is well tolerated at studied doses. Reported effects can include: Generally well-tolerated. Mild GI distress (rare; magnesium-related loose stools possible at high doses). It may also interact with some medications. BloomEase is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does BloomEase interact with any medications?

Possible interactions include: Anticoagulants — yarrow has modest antiplatelet effects; theoretical bleeding risk. Antiplatelets — same. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for BloomEase?

NutraSmarts rates the evidence for BloomEase as Limited (2 out of 5). It is backed by 2 clinical trials and 3 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(3 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Ensiyeh Jenabi, Bita Fereidoony Effect of Achillea Millefolium on Relief of Primary Dysmenorrhea: A Double-Blind Randomized Clinical Trial Journal of Pediatric and Adolescent Gynecology. 2015;28(5):402-4. doi:10.1016/j.jpag.2014.12.008.PubMedUsed to support: Double-blind RCT demonstrating that Achillea millefolium (yarrow) significantly reduced menstrual pain scores versus placebo at 1 month (p=0.001) and 2 months (p<0.0001). Supports the yarrow for menstrual discomfort and coverage before and during menstruation benefits of the yarrow component in BloomEase™ (component RCT; BloomEase™-specific trial not published in peer-reviewed sources).
  2. Fabio Parazzini, Mirella Di Martino, Paolo Pellegrino Magnesium in the gynecological practice: a literature review Magnesium Research. 2017;30(1):1-7. doi:10.1684/mrh.2017.0419.PubMedUsed to support: Literature review concluding that magnesium supplementation is effective in the prevention of dysmenorrhea and premenstrual syndrome, summarizing evidence across multiple clinical studies. Supports the magnesium for PMS independent evidence benefit of the marine magnesium component in BloomEase™ (magnesium component literature; BloomEase™-specific trial not published in peer-reviewed sources).
  3. Neil Bernard Boyle, Clare Lawton, Louise Dye The Effects of Magnesium Supplementation on Subjective Anxiety and Stress—A Systematic Review Nutrients. 2017;9(5):429. doi:10.3390/nu9050429.PubMedUsed to support: Systematic review finding that four of seven PMS studies reported positive effects of magnesium supplementation on subjective anxiety outcomes. Supports the magnesium for PMS mood benefit of the marine magnesium component in BloomEase™ (magnesium component literature; BloomEase™-specific trial not published in peer-reviewed sources).