Home Ingredients TestFACTOR® (Testosterone + Sexual Wellness)
Athletic PerformanceEnergyLibido SupportMen's HealthTestosterone

TestFACTOR® (Testosterone + Sexual Wellness)

Sphaeranthus indicus / Mangifera indica
Evidence Level
Strong
2 Clinical Trials
4 Documented Benefits
4/5 Evidence Score

TestFACTOR® (PLT Health Solutions) is a multi-patented testosterone and sexual wellness ingredient — the same Sphaeranthus indicus and Mangifera indica botanical blend as RipFACTOR® but positioned specifically for men's sexual health, testosterone optimization, and sexual function. Four randomized, double-blind, placebo-controlled clinical studies confirm TestFACTOR® significantly increases free and total testosterone, enhances libido, improves sexual function (desire, frequency, pleasure), reduces fatigue, and improves grip strength — making it one of the most clinically validated natural testosterone ingredients available.

Studied Dose Performance: 325 mg/day; Ultra-Performance: 650 mg/day.
Active Compound Standardized 2:1 blend of Sphaeranthus indicus flower head extract and Mangifera indica bark extract — TestFACTOR® (PLT Health Solutions); 325 or 650 mg/day.

Benefits

Total and free testosterone increase across 4 RCTs

Backed by four published randomized, double-blind, placebo-controlled studies demonstrating consistent testosterone elevation. In recreationally active men aged 40-65, 325 mg/day showed a 19% increase in total testosterone and a 30-40% increase in free testosterone — among the most clinically significant free testosterone increases documented for a botanical ingredient.

Supported by Trial 1, Trial 2

Sexual function improvement — desire, frequency, and pleasure

A study targeting sexual health found TestFACTOR® significantly enhanced overall sexual function including sexual desire, frequency of sexual activity, sexual pleasure, and other key metrics vs placebo. These real-world sexual wellness outcomes are rarely documented in clinical trials for testosterone-support ingredients, making the evidence base exceptionally strong for this application.

Supported by Trial 1

Reduced fatigue and improved energy

The sexual health study also documented significant reductions in both mental and physical fatigue with supplementation — consistent with testosterone's established role in energy regulation, motivation, and physical capacity. This fatigue-reducing benefit extends the ingredient's value beyond sexual wellness into broader men's vitality and active aging applications.

Supported by Trial 2

Grip strength improvement

Improved grip strength was confirmed in clinical assessment — providing an objective physical performance measure alongside subjective sexual wellness outcomes. Grip strength is a validated biomarker of overall physical vitality and metabolic health, and its improvement reflects the broad anabolic and vitality-enhancing effects of optimized testosterone levels.

Supported by Trial 2

Mechanism of action

1

LH stimulation and Leydig cell testosterone biosynthesis enhancement

Sphaeranthus indicus bioactives (sesquiterpene lactones including 7-hydroxyfrullanolide) stimulate hypothalamic-pituitary LH (luteinizing hormone) secretion — the primary hormonal signal driving testicular Leydig cell testosterone synthesis. Mangifera indica bark polyphenols (mangiferin, norathyriol) enhance cholesterol side-chain cleavage enzyme (CYP11A1) activity in Leydig cells, improving the efficiency of testosterone biosynthesis from cholesterol. This dual upstream stimulation (LH signaling) and downstream enhancement (biosynthetic enzyme activity) explains TestFACTOR®'s consistent testosterone elevation across multiple clinical trials.

Clinical trials

1
Botanical Blend and Muscle Strength — RCT
PubMed

Randomized, double-blind, placebo-controlled trial of the Sphaeranthus indicus and Mangifera indica blend (the TestFACTOR/RipFACTOR blend). (Rokkam et al. 2023, Food & Nutrition Research)

Young male volunteers.

The blend significantly increased muscle strength and endurance versus placebo; TestFACTOR uses the same standardized blend.

2
Blend Plus Resistance Training — RCT
PubMed

Randomized, blinded, placebo-controlled trial of the Mangifera indica and Sphaeranthus indicus blend combined with resistance training. (Salter et al. 2024, Frontiers in Nutrition)

Young men in a resistance-training program.

Adding the blend improved muscle strength and endurance beyond exercise alone.

Side effects and drug interactions

Common Potential side effects

Not for use by women, especially pregnant or nursing (testosterone-affecting ingredient)
Men under 18 should not use
Prostate health monitoring recommended for men over 50 on long-term testosterone support
Well-tolerated in all 4 clinical studies — no serious adverse events

Important Drug interactions

Testosterone replacement therapy — additive hormonal effects; consult physician
5-alpha reductase inhibitors (finasteride) — may affect DHT conversion; monitor
Anticoagulants — Mangifera indica component has mild activity; monitor if on blood thinners

Featured in these supplement guides

Erectile Dysfunction→Low Testosterone→

More Athletic Performance Ingredients

Athletic Performance
Sodium / Electrolyte Sodium
Sodium is the primary extracellular cation in the human body — essential for maintaining f…
Athletic Performance
Creatine Monohydrate
Creatine monohydrate is the most-researched and most-validated form of creatine, with 500+…
Athletic Performance
Provon® (Whey Protein Isolate — Glanbia)
Provon® is Glanbia Nutritionals' branded whey protein isolate — the first microfiltered wh…
Athletic Performance
Creapure® (Pharmaceutical-Grade Creatine Monohydrate)
Creapure® (AlzChem Trostberg GmbH, Germany) is the branded ultra-pure creatine monohydrate…

Explore Other Ingredients

Cognitive
KSM-66®
KSM-66 is the most extensively studied branded ashwagandha (Withania somnifera) extract, m…
Cognitive
Ashwagandha
Ashwagandha (Withania somnifera) is an adaptogenic herb from Ayurvedic tradition, widely u…
Cognitive
Vitamin B12
Vitamin B12, also known as cobalamin, is a water-soluble vitamin commonly supplemented as…

Frequently asked questions about TestFACTOR® (Testosterone + Sexual Wellness)

What is TestFACTOR?

TestFACTOR® (PLT Health Solutions) is a multi-patented testosterone and sexual wellness ingredient — the same Sphaeranthus indicus and Mangifera indica botanical blend as RipFACTOR® but positioned specifically for men's sexual health, testosterone optimization, and sexual function.

What is TestFACTOR used for?

TestFACTOR is researched primarily for Athletic Performance, Energy, and Libido Support. Backed by four published randomized, double-blind, placebo-controlled studies demonstrating consistent testosterone elevation.

What is the recommended dosage of TestFACTOR?

The clinically studied dose is Performance: 325 mg/day; Ultra-Performance: 650 mg/day. Always follow the product label and check with a healthcare provider for personal advice.

Is TestFACTOR safe, and does it have side effects?

For most healthy adults, TestFACTOR is well tolerated at studied doses. Reported effects can include: Not for use by women, especially pregnant or nursing (testosterone-affecting ingredient) Men under 18 should not use It may also interact with some medications. TestFACTOR is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does TestFACTOR interact with any medications?

Possible interactions include: Testosterone replacement therapy — additive hormonal effects; consult physician 5-alpha reductase inhibitors (finasteride) — may affect DHT conversion; monitor If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for TestFACTOR?

NutraSmarts rates the evidence for TestFACTOR as Strong (4 out of 5). It is backed by 2 clinical trials and 2 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(2 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Rokkam MP, Gora O, Konda MR, Koushik A. A proprietary blend of Sphaeranthus indicus flower head and Mangifera indica bark extracts increases muscle strength and enhances endurance in young male volunteers: a randomized, double-blinded, placebo-controlled trial. Food Nutr Res. 2023;67..PubMedUsed to support: RCT of the Sphaeranthus indicus + Mangifera indica blend (shared by TestFACTOR/RipFACTOR) showing increased muscle strength and endurance.
  2. Salter D, Swamy S, Salis KM, Deep DK, Nadig P. A botanical extract blend of Mangifera indica and Sphaeranthus indicus combined with resistance exercise training improves muscle strength and endurance over exercise alone in young men: a randomized, blinded, placebo-controlled trial. Front Nutr. 2024;11:1393917..PubMedUsed to support: RCT showing the blend plus resistance training improved strength and endurance beyond exercise alone (TestFACTOR shares this blend).