At Zenitra Labs, we believe in transparency and evidence-based wellness. Women's Vitality Formula combines 11 botanicals traditionally used to support women's hormonal health, each independently verified at full label-claim potency on our Certificate of Analysis. Below is a summary of key scientific studies and clinical findings on these ingredients.

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1. Vasomotor Comfort (Hot Flashes & Night Sweats)

Red Clover and Soy Isoflavones are phytoestrogens studied specifically for their role in supporting comfort during the hormonal shifts of perimenopause and menopause.

Study: Evaluation of Clinical Meaningfulness of Red Clover (Trifolium pratense L.) Extract to Relieve Hot Flushes and Menopausal Symptoms: A Systematic Review and Meta-Analysis.
Key Finding: A meta-analysis of 8 randomized controlled trials found red clover isoflavone supplementation was associated with a statistically significant reduction in daily hot flash frequency compared to placebo, with the strongest effects seen at isoflavone doses of 80mg/day or higher over 12 weeks.
Source: National Library of Medicine (PMC)

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2. Hormonal & Cycle Balance

Chasteberry (Vitex agnus-castus) has one of the stronger clinical research bases among women's hormonal-health botanicals, with a long history of use for supporting cycle-related comfort.

Study: Vitex agnus-castus Extracts for Female Reproductive Disorders: A Systematic Review of Clinical Trials.
Key Finding: A systematic review of 12 randomized controlled trials found that 7 of 8 studies on premenstrual symptoms reported chasteberry extract performed significantly better than placebo, with adverse events reported as mild and infrequent.
Source: PubMed

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3. Traditional Herbal Support

Black Cohosh, Dong Quai, and Sage Leaf are longstanding botanicals in traditional women's wellness practices, with an evolving and mixed clinical research picture.

Study: First Time Proof of Sage's Tolerability and Efficacy in Menopausal Women with Hot Flushes.
Key Finding: In a clinical trial of 69 menopausal women, 8 weeks of daily sage leaf supplementation was associated with a significant reduction in hot flash frequency and intensity.
Source: Advances in Therapy (Springer)

A note on Black Cohosh: Research on Black Cohosh is genuinely mixed. Several smaller trials report symptom improvement, while a large NIH-funded randomized trial of 351 women found no significant difference versus placebo. We include it for its long traditional use, and encourage transparency about this mixed evidence rather than overstating its effects.

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4. Antioxidant & Overall Wellness Support

Blessed Thistle, Red Raspberry Leaf, Wild Yam, Licorice Root, and trans-Resveratrol round out the formula, contributing antioxidant compounds and a long history of traditional use in women's wellness practices.

Verified on our Certificate of Analysis: All 11 botanicals in Women's Vitality Formula are independently lab-tested and confirmed at or above label-claim potency for every batch, including trans-Resveratrol at 100% of label claim.
Source: Zenitra Labs internal Certificate of Analysis, Lot 243347

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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. The research cited above refers to the benefits of these ingredients generally and does not constitute a direct claim about Zenitra Labs Women's Vitality Formula. Individual results may vary.