The short answer · Premenstrual symptom severity

Nature's Way, Vitex Fruit, 400 mg, 100 Vegan Capsules
4.6· 28,086 ratings· $0.06/serving
Chasteberry (Vitex) 400 mg — inside the studied 20-1000 mg window
Of 4,444 products scored for Premenstrual symptom severity, Nature's Way, Vitex Fruit, 400 mg, 100 Vegan Capsules ranks #1 with a DoseRank score of 87. Chasteberry (Vitex) is the strongest evidence signal for this outcome.
Chasteberry (Vitex) is the strongest evidence signal for this outcome.
Strong evidence · 400 mg
Dried berry of Vitex agnus-castus; traditionally used for PMS and cycle irregularity via mild dopaminergic, prolactin-lowering activity.
Moderate evidence · 93 mg
The active, coenzyme form of vitamin B6; ready for immediate metabolic use without hepatic conversion, preferred for those with impaired B6 phosphorylation.
Moderate evidence · 33 mg
The most common, inexpensive form of vitamin B6; well absorbed but must convert to active P5P, the preferred form for those with conversion issues.
Questions
Nature's Way, Vitex Fruit, 400 mg, 100 Vegan Capsules ranks #1 for Premenstrual symptom severity with a DoseRank score of 87. The score blends clinical strength, evidence, dose fit, trust signals and value across 4,444 products scored for this outcome.
Chasteberry (Vitex) is the strongest evidence signal for this outcome.
Chasteberry (Vitex) at 400 mg lands inside the studied 20-1000 mg window. DoseRank scores this product's dose fit at 76 out of 100.
Nature's Way, Vitex Fruit, 400 mg, 100 Vegan Capsules works out at $0.06 per serving. $0.06 per serving — low price tier for this outcome. Nothing else in this ranking costs less per serving.
No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.
Retailer links may be affiliate links. Rankings and placement are never paid.
Chasteberry (Vitex) at 400 mg lands inside the studied 20-1000 mg window.
Chasteberry (Vitex)
Studied window 20-1000 mg · this pick 400 mg
Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.
$0.06 per serving — low price tier for this outcome. Nothing else in this ranking costs less per serving.
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The #1 pick is $0.06 a serving.Nature's Way, Vitex Fruit, 400 mg, 100 Vegan Capsules — in stock at a tracked retailer.
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