Increase free testosterone

What this outcome means

Free testosterone is the unbound, biologically active fraction of the hormone that your tissues can actually use. On DoseRank it maps to a defined health outcome built from human studies on free testosterone concentration, bioavailable hormone fraction, and sex-hormone-binding globulin levels – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Low energy and driveMen noticing flagging vitality, libido, or day-to-day motivation.

Midlife shiftsPeople tracking hormone changes that come with aging.

Bound-up hormoneThose whose total reads normal but active fraction runs low.

Stack buildersAlready taking supplements such as Tongkat Ali or Boron Citrate and want the dose right.

Evidence level

69Moderate-strong

Tongkat Ali – has moderate public evidence for this outcome. This usually means there are smaller or mechanistic studies, but not randomized human trials. A DoseFit Score of 85 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

Tongkat Ali leads this outcome, supported by Boron Citrate.

Dose matchedDoseFit 85

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Tongkat Ali 150 mg vs 100-400 mg; Above range: Boron Citrate 100 mg vs 6-10 mg.

Thin spots

Boron Citrate has low evidence for this outcome, so it is flagged as an evidence gap rather than treated as a proven driver.

Processed

1.3k

Available

1.3k

Ingredients

Brands

210

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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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.

Increase free testosterone

What this outcome means

Who it's for

Low energy and driveMen noticing flagging vitality, libido, or day-to-day motivation.

Midlife shiftsPeople tracking hormone changes that come with aging.

Bound-up hormoneThose whose total reads normal but active fraction runs low.

Stack buildersAlready taking supplements such as Tongkat Ali or Boron Citrate and want the dose right.

Evidence level

69Moderate-strong

Best available ingredients

Tongkat Ali leads this outcome, supported by Boron Citrate.

Dose matchedDoseFit 85

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Tongkat Ali 150 mg vs 100-400 mg; Above range: Boron Citrate 100 mg vs 6-10 mg.

Thin spots

Boron Citrate has low evidence for this outcome, so it is flagged as an evidence gap rather than treated as a proven driver.

Processed

1.3k

Available

1.3k

Ingredients

Brands

210

Coverage

100%

Relevant ingredients

Which ingredient types matter for free testosteroneOpen to see which ingredient types matter for free testosterone

1.4k products across 4 ingredient types — open to filter the ranking.

Use types to filter ranked products

Botanicals/Herbal Extracts

436 products

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

Typical:

Antioxidants & Bioactive Compounds

128 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

753 products

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

Typical: , , , ...

Sweeteners & Functional Sugars

87 products

Sugars and sugar-like compounds that sweeten or feed gut microbes. Ranges from table sugar to functional prebiotic sugars with little blood-sugar impact.

Typical:

Top decision cards

Best products for free testosterone

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for free testosterone

MuscleTech, AlphaTest™, 120 Capsules

MuscleTech$0.32 / serving4.7 · 1,722Available now

Why this ranks here

Evidence fitTongkat Ali has moderate human evidence for this outcome.
Dose fitTongkat Ali at 150 mg lands inside the studied 100-400 mg window.
Price / serving$0.32 per serving — mid price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustSolid trust signals from buyer ratings, with room to grow.

Trade-offs

Evidence depth trails the rest of this listDose fit is the weak spot on this list

The numbers

150 mgIn rangeinside the studied 100-400 mg window

100 mgThin evidenceevidence for this ingredient is still thin

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products