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 withdrawal symptoms

What this outcome means

Withdrawal symptoms are the physical and mental effects that surface when you cut back or stop something your body has grown used to. On DoseRank it maps to a defined health outcome built from human studies on withdrawal symptom severity scales, craving intensity, and symptom duration – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Cutting backPeople reducing a regular habit and riding out the early effects.

Restless and on-edgeIrritability, unease, and cravings that follow stopping use.

Caffeine step-downThose easing off coffee facing headaches and low energy.

Stack buildersAlready taking supplements such as Passionflower and want the dose right.

Evidence level

60Limited

Evidence score is low, which means that there is not enough data to support the effectiveness of this outcome. However, we will continue to monitor the research and update our recommendations as new information becomes available.

Thin ingredient signal

Passionflower is the best available ingredient signal for this outcome, but the evidence is still thin.

Dose matchedDoseFit 91

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Passionflower 1.1 g vs 0.3-0.8 g.

Processed

434

Available

434

Ingredients

Brands

154

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 →

Not sure which is right for you?

Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.

Take 60-sec quiz

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 withdrawal symptoms

What this outcome means

Who it's for

Cutting backPeople reducing a regular habit and riding out the early effects.

Restless and on-edgeIrritability, unease, and cravings that follow stopping use.

Caffeine step-downThose easing off coffee facing headaches and low energy.

Stack buildersAlready taking supplements such as Passionflower and want the dose right.

Evidence level

60Limited

Thin ingredient signal

Passionflower is the best available ingredient signal for this outcome, but the evidence is still thin.

Dose matchedDoseFit 91

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Passionflower 1.1 g vs 0.3-0.8 g.

Processed

434

Available

434

Ingredients

Brands

154

Coverage

100%

Relevant ingredients

Which ingredient types matter for withdrawal symptomsOpen to see which ingredient types matter for withdrawal symptoms

331 products across 2 ingredient types — open to filter the ranking.

Use types to filter ranked products

Alkaloids & Stimulants

204 products

Plant-derived nitrogen compounds like caffeine that stimulate the nervous system. Effective but dose-sensitive, with real tolerance and dependence risk.

Typical:

Botanicals/Herbal Extracts

127 products

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

Typical:

Top decision cards

Best products for withdrawal symptoms

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for withdrawal symptoms

Frontier Co-op, Cut & Sifted Passion Flower Herb, 16 oz (453 g)

Frontier Co-op$0.05 / serving4.7 · 499Available now

Also helps with

Calmness or relaxation

Anxiety symptoms

Sleep quality

Why this ranks here

Evidence fitEvidence is still thin for Passionflower.
Dose fitPassionflower at 1.1 g is higher than the studied 0.3-0.8 g window.
Price / serving$0.05 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustMixed trust signals — ratings are positive but the base is limited.

The numbers

1.1 gAbove rangehigher than the studied 0.3-0.8 g window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Solaray, True Herbs, Passion Flower, 100 VegCaps (350 mg per VegCap)

SolarayClinical69Dose fit85Popularity81$0.23/ serving

Swanson Vitamins, Full Spectrum® Passion Flower, 500 mg, 60 Capsules

Swanson VitaminsClinical68Dose fit76Popularity87$0.09/ serving

NOW Foods, Passion Flower, 90 Veg Capsules (350 mg per Capsule)

NOW FoodsClinical69Dose fit85Popularity72$0.26/ serving

Nutricost, Passion Flower Extract, 1,500 mg, 120 Capsules

NutricostClinical67Dose fit70Popularity81$0.07/ serving

Nature's Answer, Passionflower Aerial Parts, Fluid Extract, Alcohol-Free, 2,000 mg, 1 fl oz (30 ml)

Nature's AnswerClinical70Dose fit94Popularity81$0.76/ serving

Oregon's Wild Harvest, Organic Passionflower, 90 Organic Vegan Capsules (400 mg per Capsule)

Oregon's Wild HarvestClinical70Dose fit90Popularity45$0.46/ serving

Nature's Answer, Passionflower, 60 Vegetarian Capsule (250 mg per Capsule)

Nature's AnswerClinical68Dose fit76Popularity45$0.40/ serving

Vitacost, Passion Flower, 300 Capsules (350 mg per Capsule)

VitacostClinical69Dose fit85Popularity30$0.10/ serving

Herb Pharm, Passionflower, 1 fl oz (30 ml)

Herb PharmClinical69Dose fit82Popularity30$0.41/ serving