Home Ingredients TestFACTOR® (Sphaeranthus indicus + Mangifera indica Blend)
Athletic PerformanceMen's Health

TestFACTOR® (Sphaeranthus indicus + Mangifera indica Blend)

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

TestFACTOR® (PLT Health Solutions) is a Sphaeranthus indicus and Mangifera indica botanical blend, the same formulation as RipFACTOR®, marketed for men's testosterone support. Two published randomized, double-blind, placebo-controlled trials in young men measured muscle strength and endurance as their primary outcomes; both also recorded a rise in serum free and total testosterone as a secondary marker. No published trial has measured libido, sexual function, or fatigue for this blend.

Studied Dose 650 mg/day for 56 days in the Rokkam 2023 muscle-strength trial; 425 or 850 mg/day for 56 days in the Salter 2024 resistance-training trial.
Active Compound Standardized 2:1 blend of Sphaeranthus indicus flower head extract and Mangifera indica bark extract — TestFACTOR® (PLT Health Solutions). Cited trials used 650 mg/day (Rokkam 2023) and 425 or 850 mg/day (Salter 2024).

Benefits

Serum testosterone rose as a secondary marker in two muscle-strength trials

Two published randomized, double-blind, placebo-controlled trials in young men (ages 18 to 40) measured muscle strength as the primary outcome and serum testosterone as a secondary marker. In both, free and total testosterone rose versus placebo. These are secondary hormone readings in young, healthy men, not a measured sexual or clinical testosterone-deficiency outcome, and the specific figures sometimes quoted (a 19 percent total and 30 to 40 percent free testosterone rise in men aged 40 to 65 at 325 mg/day) do not appear in either published trial.

Supported by Trial 1, Trial 2

Muscle endurance and time to exhaustion

The two cited trials measured endurance: the Rokkam 2023 trial found greater treadmill time to exhaustion and more repetitions versus placebo, and the Salter 2024 trial found added repetitions to failure over resistance training alone. No published trial has measured sexual desire, frequency of activity, or sexual pleasure for this blend, so no sexual-function claim can be supported.

Supported by Trial 2, Trial 1

Fatigue and energy were not measured

Neither published trial of this blend measured mental or physical fatigue, so a fatigue or energy benefit cannot be supported. The measured human outcomes are muscle strength and endurance in young men.

Supported by Trial 1, Trial 2

Grip strength improvement

Handgrip strength improved versus placebo in the Rokkam 2023 trial (p < 0.001) in young men taking 650 mg/day for 56 days. This is an objective strength measure alongside the trial's other muscle outcomes (bench press, leg press, endurance).

Supported by Trial 1, Trial 2

Mechanism of action

1

Proposed testosterone-biosynthesis pathway (preclinical)

A proposed mechanism, established only in preclinical work and not confirmed in humans, is that Sphaeranthus indicus sesquiterpene lactones influence luteinizing hormone signaling while Mangifera indica polyphenols such as mangiferin affect steroidogenic enzyme activity in Leydig cells. The human trials of this blend recorded serum testosterone only as a secondary marker and did not test this pathway, so the LH and CYP11A1 steps remain unproven for the ingredient as sold.

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 both cited clinical trials, with no serious adverse events reported

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
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…
Athletic Performance
Beta Alanine
Beta-alanine is a non-essential amino acid used by athletes to support muscular endurance…

Explore Other Ingredients

Muscle & Recovery
L-Glutamine
L-glutamine is the most abundant amino acid in the body and the primary metabolic fuel for…
Bone Health
Boron
Boron is a trace mineral that influences how the body uses calcium, magnesium, and vitamin…
Metabolic Health
Fenugreek
Fenugreek is an aromatic seed used both as a culinary spice and a supplement. The best stu…

Frequently asked questions about TestFACTOR® (Sphaeranthus indicus + Mangifera indica Blend)

What is TestFACTOR?

TestFACTOR® (PLT Health Solutions) is a Sphaeranthus indicus and Mangifera indica botanical blend, the same formulation as RipFACTOR®, marketed for men's testosterone support.

What is TestFACTOR used for?

TestFACTOR is researched primarily for Athletic Performance and Men's Health. Two published randomized, double-blind, placebo-controlled trials in young men (ages 18 to 40) measured muscle strength as the primary outcome and serum testosterone as a secondary marker.

What is the recommended dosage of TestFACTOR?

The clinically studied dose is 650 mg/day for 56 days in the Rokkam 2023 muscle-strength trial; 425 or 850 mg/day for 56 days in the Salter 2024 resistance-training trial. 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 Limited (2 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: In men aged 18 to 40 taking 650 mg/day of the Sphaeranthus indicus + Mangifera indica blend for 56 days alongside resistance exercise, bench press, leg press, handgrip strength and endurance improved versus placebo; serum free testosterone, a secondary marker, also rose. Funded by the ingredient maker (Laila Nutraceuticals).
  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: In young men (age 22 plus or minus 3), adding this blend to resistance training improved bench and leg-press strength and repetitions to failure beyond exercise alone; serum total and free testosterone, measured as secondary markers, also rose (p < 0.05). An author was employed by PLT Health Solutions, which sells the ingredient.