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.

Improve sperm motility

What this outcome means

Sperm motility is how well sperm swim — the share that move and how strongly they push forward toward an egg. On DoseRank it maps to a defined health outcome built from human studies on the percentage of motile sperm, progressive motility, and swim-speed measures – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Trying to conceiveCouples actively working toward a pregnancy over many months.

Borderline semen resultsMen whose analysis flagged low movement in their sample.

Preconception planningAnyone tracking reproductive markers before starting a family.

Stack buildersAlready taking supplements such as Acetyl-L-Carnitine or CoQ10 and want the dose right.

Evidence level

78Moderate-strong

Acetyl-L-Carnitine and CoQ10 – have moderate public evidence for this outcome. This usually means there are smaller or mechanistic studies, but not randomized human trials. A DoseFit Score of 75 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 available ingredients

Acetyl-L-Carnitine and CoQ10 are the best supported ingredient signals for this outcome.

Dose matchedDoseFit 75

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Acetyl-L-Carnitine 1500 mg vs 1000-3000 mg, CoQ10 300 mg vs 200-400 mg.

Processed

3.3k

Available

3.3k

Ingredients

Brands

301

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?

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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.

Improve sperm motility

What this outcome means

Who it's for

Trying to conceiveCouples actively working toward a pregnancy over many months.

Borderline semen resultsMen whose analysis flagged low movement in their sample.

Preconception planningAnyone tracking reproductive markers before starting a family.

Stack buildersAlready taking supplements such as Acetyl-L-Carnitine or CoQ10 and want the dose right.

Evidence level

78Moderate-strong

Best available ingredients

Acetyl-L-Carnitine and CoQ10 are the best supported ingredient signals for this outcome.

Dose matchedDoseFit 75

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Acetyl-L-Carnitine 1500 mg vs 1000-3000 mg, CoQ10 300 mg vs 200-400 mg.

Processed

3.3k

Available

3.3k

Ingredients

Brands

301

Coverage

100%

Relevant ingredients

Which ingredient types matter for sperm motilityOpen to see which ingredient types matter for sperm motility

3.1k products across 3 ingredient types — open to filter the ranking.

Use types to filter ranked products

Amino Acids & Derivatives

283 products

The building blocks of protein, taken singly for targeted effects – leucine for muscle, theanine for calm. Free-form versions absorb fast on an empty stomach.

Typical: , , , ...

Antioxidants & Bioactive Compounds

1.1k products

Molecules that neutralize free radicals and tune cell signaling. Helpful in balance; mega-doses can blunt the body's own adaptive defenses.

Typical: , ,

Minerals & Trace Elements

1.7k products

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

Typical: ,

Top decision cards

Best products for sperm motility

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for sperm motility

Natural Factors, Regener Life™, 2.86 oz (81 g)

Natural Factors$1.26 / serving4.8 · 416Available now

Also helps with

Oxidative stress biomarkers

Cardiovascular adverse event

Neuropathy symptoms

Why this ranks here

Evidence fitAcetyl-L-Carnitine and CoQ10 have moderate human evidence for this outcome.
Dose fit2 of 2 dosed ingredients land in the studied range. Acetyl-L-Carnitine at 1500 mg lands inside the studied 1000-3000 mg window.
Price / serving$1.26 per serving — high 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

1500 mgIn rangeinside the studied 1000-3000 mg window

300 mgIn rangeinside the studied 200-400 mg window

100 mg

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Fairhaven Health, FH Pro® Fertility Multivitamin for Men, 180 Capsules

Fairhaven HealthClinical98Dose fit69Popularity89$2.91/ serving

NOW Foods, Acetyl-L-Carnitine, 500 mg, 100 Veg Capsules

NOW FoodsClinical87Dose fit67Popularity98$0.35/ serving

Doctor's Best, Acetyl-L-Carnitine, 120 Veggie Caps (500 mg per Cap)

Doctor's BestClinical87Dose fit67Popularity89$0.34/ serving

Vitacost, Synergy®, Mitochondrial Energy Booster, 120 Capsules

VitacostClinical93Dose fit79Popularity68$0.55/ serving

NOW Foods, Acetyl-L- Carnitine, 50 Veg Capsules (500 mg per Capsule)

NOW FoodsClinical87Dose fit67Popularity84$0.40/ serving

Nutrex Research, L-Carnitine 3000, Berry Blast, 15.72 fl oz (465 ml)

Nutrex ResearchClinical89Dose fit90Popularity89$0.73/ serving

NOW Foods, Sports, L-Carnitine, Triple Strength, Citrus, 16 fl oz (473 ml)

NOW FoodsClinical89Dose fit90Popularity84$0.73/ serving

Doctor's Best, Acetyl-L-Carnitine, 60 Veggie Caps (500 mg Per capsule)

Doctor's BestClinical87Dose fit67Popularity80$0.45/ serving

Nutrex Research, L-Carnitine 3000, Orange Mango, 15.72 fl oz (465 ml)

Nutrex ResearchClinical89Dose fit90Popularity76$0.73/ serving