Is a higher dose always better?

No. Dose-fit rewards landing inside the range studied for the outcome — over-dosing (common with melatonin) or under-dosing both lower the score. The goal is the effective dose, not the biggest number.

What does the Value score mean?

The Value score compares a product's price per serving with clinically relevant products ranked for the same outcome. A score of 50 is the typical price; above 50 means better value than typical, while below 50 means the product costs more than typical. It is a 0–100 value signal, not a percentile.

Why is the cheapest product not #1?

Cost is only one input. The cheapest pick here is a citrate form with weaker absorption and a stock-risk flag, so it leads on Value-for-cost but trails on the composite that also weighs evidence, dose fit and availability.

Are these affiliate links?

Retailer links may be affiliate links and DoseRank may earn a commission. Rankings and placement are determined by the scoring model only — never by payment from a brand.

Is this medical advice?

No. DoseRank summarizes evidence to help you choose; it is not a substitute for a clinician, especially if you are pregnant, breastfeeding, on medication, or managing a health condition.

Reduce PMS symptoms

What this outcome means

Premenstrual symptom severity is how heavily mood and physical symptoms weigh on you in the days before your period. On DoseRank it maps to a defined health outcome built from human studies on symptom severity scores, cycle-linked mood ratings, and physical symptom diaries – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Mood swingsIrritability, low mood, or tearfulness in the luteal phase.

Physical discomfortBloating, breast tenderness, and cramping ahead of your period.

Cycle-disrupted weeksSymptoms heavy enough to derail work or daily plans.

Stack buildersAlready taking supplements such as Chasteberry (Vitex) and want the dose right.

Evidence level

95Strong

Chasteberry (Vitex) – has strong public evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 76 means this product's ingredient forms and doses are close to what was used in the studies behind this ranking - DoseRank weights each product ingredient.

Best ingredients

Chasteberry (Vitex) is the best supported ingredient signal for this outcome.

Dose matchedDoseFit 76

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Chasteberry (Vitex) 400 mg vs 20-1000 mg.

Processed

4.4k

Available

4.4k

Ingredients

Brands

394

Coverage

100%

How to read the scores

What every metric means

Each score is 0–100. Higher is better for every metric below.

CompositeThe overall DoseRank score — a weighted blend of clinical strength, evidence, dose fit, trust and value.Higher is better

ClinicalHow strongly the formula's ingredients and doses match what clinical studies used for this outcome.Higher is better

EvidenceHow much published human research backs the formula's key ingredients for this outcome — both how many studies exist and how strong they are.Higher is better

ValueHow the price per serving compares with similar products for this outcome — 50 is the typical price, higher means better value for your money.Higher is better

TrustHow well customers rate this product, with extra weight given to ratings backed by a large number of reviews.Higher is better

PopularityHow strongly this product sells compared with the other ranked products for this outcome.Higher is better

This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →

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Get a personal report

A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.

Questions

Frequently asked

Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.

Reduce PMS symptoms

What this outcome means

Who it's for

Mood swingsIrritability, low mood, or tearfulness in the luteal phase.

Physical discomfortBloating, breast tenderness, and cramping ahead of your period.

Cycle-disrupted weeksSymptoms heavy enough to derail work or daily plans.

Stack buildersAlready taking supplements such as Chasteberry (Vitex) and want the dose right.

Evidence level

95Strong

Best ingredients

Chasteberry (Vitex) is the best supported ingredient signal for this outcome.

Dose matchedDoseFit 76

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Chasteberry (Vitex) 400 mg vs 20-1000 mg.

Processed

4.4k

Available

4.4k

Ingredients

Brands

394

Coverage

100%

Relevant ingredients

Which ingredient types matter for premenstrual symptom severityOpen to see which ingredient types matter for premenstrual symptom severity

4.1k products across 4 ingredient types — open to filter the ranking.

Use types to filter ranked products

Botanicals/Herbal Extracts

187 products

Concentrated plant and herbal extracts standardized to actives. Potency depends on the extract ratio and marker content, not raw weight.

Typical:

Minerals & Trace Elements

327 products

Inorganic nutrients from calcium to zinc. The chemical form drives absorption – chelates and citrates usually beat cheap oxides.

Typical:

Vitamins

3.4k products

Essential micronutrients the body can't make in sufficient amounts. Fat-soluble ones (A, D, E, K) store up; water-soluble ones need regular topping-up.

Typical: , ,

Fatty Acids & Lipids

196 products

Dietary fats including omega-3s and structural lipids. Look at the active EPA/DHA amounts and freshness, since oils oxidize and turn rancid.

Top decision cards

Best products for premenstrual symptom severity

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for premenstrual symptom severity

Nature's Way, Vitex Fruit, 400 mg, 100 Vegan Capsules

Nature's Way$0.06 / serving4.6 · 28,086Available now

Also helps with

Menstrual regularity

Irritability

Female fertility

Why this ranks here

Evidence fitChasteberry (Vitex) is the strongest evidence signal for this outcome.
Dose fitChasteberry (Vitex) at 400 mg lands inside the studied 20-1000 mg window.
Price / serving$0.06 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustStrong trust signals — consistently high marks from verified buyer ratings.

The numbers

400 mgIn rangeinside the studied 20-1000 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Solaray, True Herbs, Vitex, 400 mg, 100 VegCaps

SolarayClinical89Dose fit76Popularity89$0.09/ serving

Swanson Vitamins, Full Spectrum® Chasteberry Fruit, 400 mg, 120 Vegan Capsules

Swanson VitaminsClinical89Dose fit76Popularity91$0.08/ serving

NOW Foods, Chaste Berry Vitex Extract, 300 mg, 90 Veg Capsules

NOW FoodsClinical89Dose fit73Popularity84$0.15/ serving

Nature's Answer, Vitex, 40 mg, 90 Vegetarian Capsules

Nature's AnswerClinical88Dose fit67Popularity68$0.10/ serving

EVLution Nutrition, Women's Multivitamin, 120 Tablets

EVLution NutritionClinical89Dose fit65Popularity68$0.23/ serving

Swanson Vitamins, Menopause Essentials, Women's Health, 120 Veggie Capsules

Swanson VitaminsClinical88Dose fit67Popularity80$0.12/ serving

Irwin Naturals, Magnesium PM™ + Relaxing Flower Complex, 60 Liquid Soft-Gels

Irwin NaturalsClinical95Dose fit93Popularity30$0.30/ serving

Nutricost, Women, Chasteberry with Dong Quai & Ginger Root, 120 Capsules

NutricostClinical89Dose fit78Popularity50$0.13/ serving

Micro Ingredients, Saffron+ Advanced, 60 Vegetarian Capsules

Micro IngredientsClinical94Dose fit79Popularity68$0.69/ serving