Seed cycling capsules with chasteberry reduce PMS symptom severity and frequency over two menstrual cycles
In a single-arm trial, 40 women using Two Moons Seed Cycling Capsules (ZEST and ZEN) showed significant improvements in Menstrual Symptom Questionnaire (MSQ) scores, Numerical Pain Rating Scale (NPRS) scores for cramping, and a 73.86% decrease in sick days due to menstrual issues by the end of Cycle 2. All nine PMS-related symptom parameters improved, including digestive upset, breast tenderness, and productivity interference. Participant satisfaction was high, with 71.79% reporting improved premenstrual/menstrual pain.
This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.
Seed cycling capsules with chasteberry reduce PMS symptom severity and frequency over two menstrual cycles The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
Seed cycling capsules with chasteberry reduce PMS symptom severity and frequency over two menstrual cycles
This conclusion is most relevant to: 40 women aged 21-46 years with PMS symptoms.
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Symptoms of Premenstrual Syndrome in Women Receiving Seed Cycling Capsules With Chasteberry: A Single-Arm Clinical Trial Over Two Cycles. (Cureus, 2026) —
How It Works
The proposed biological pathway:
- ▸Chasteberry (Vitex agnus-castus) may modulate prolactin and dopamine, influencing hormonal balance
- ▸Flaxseed and pumpkin seed provide phytoestrogens and omega-3 fatty acids that may affect prostaglandin levels
- ▸Sesame and sunflower seeds contain lignans and vitamin E, potentially reducing inflammation and oxidative stress
- ▸Result: Reduced PMS symptom severity and frequency over two cycles
Who Might Benefit
Evidence fit by population:
- ▸40 women aged 21-46 years with PMS symptoms
Recommended Dose
ZEST: days 1-14; ZEN: days 15-28 (capsule form, exact dose not specified)
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Open-label, single-arm design without a control group, limiting causal inference
- ▸Small sample size (n=40) and lack of randomization may introduce bias
- ▸Virtual trial with self-reported outcomes, potentially subject to recall bias
- ▸Short duration (two cycles) may not capture long-term effects
Frequently Asked Questions
What is seed cycling?▼
Seed cycling involves consuming specific seeds during different phases of the menstrual cycle to support hormonal balance. In this study, ZEST (flaxseed and pumpkin seed) was taken during days 1-14, and ZEN (sesame, sunflower, psyllium, and chasteberry) during days 15-28.
How effective was the seed cycling product for PMS?▼
Participants showed significant improvements in PMS symptoms by the end of Cycle 2, including a 73.86% reduction in sick days and improvements in pain, cramping, bloating, mood, sleep, and skin clarity, with 71.79% reporting improved premenstrual/menstrual pain.
What are the main ingredients in the capsules?▼
ZEST contains organic flaxseed and pumpkin seed. ZEN contains organic sesame seed, sunflower seed, psyllium, and chasteberry (Vitex agnus-castus).
Are these results reliable?▼
The study is a single-arm, open-label trial without a control group, so results are preliminary. Larger randomized controlled trials are needed to confirm efficacy.
References
- 1.O'Gorman E, Kaunzner UW, Mitschke S. “Symptoms of Premenstrual Syndrome in Women Receiving Seed Cycling Capsules With Chasteberry: A Single-Arm Clinical Trial Over Two Cycles..” Cureus, 2026. PMID: 42639569 DOI: 10.7759/cureus.115036