The Research
Most testosterone supplements ask you to trust the label. Here's the research behind ours.
We're not asking you to take our word for it. Here's the published, peer-reviewed research behind the two clinically-studied ingredients in Ginger Jacked Premium Testosterone Support — at the actual doses we use, not a diluted version of them.
TESTOFEN® — 600mg
The claim: Supports total and free testosterone, lean muscle mass, and reduced body fat.
The research: An 8-week, randomized, double-blind, placebo-controlled trial of 138 men found that 600mg of Testofen daily — the same dose used in Ginger Jacked — produced a measurable increase in testosterone, a 1.2kg decrease in body mass, a 1.4% drop in body fat, and an increase in lean mass, alongside greater strength gains than placebo.
Source: Rao A, et al. "Testofen® (Fenugreek extract) increases strength and muscle mass compared to placebo in response to calisthenics." Translational Sports Medicine, 2020. Link: https://onlinelibrary.wiley.com/doi/abs/10.1002/tsm2.153
LJ100® — 200mg
The claim: Supports total testosterone levels and reduces age-related fatigue.
The research: A randomized, double-blind, placebo-controlled multicentre study found that LJ100 (Eurycoma longifolia water extract) at 100mg and 200mg doses improved total testosterone levels and reduced fatigue in aging men — improvements were measurable in as little as 2 to 4 weeks.
Source: Chinnappan SM, et al. "Effect of Eurycoma longifolia Standardised Aqueous Root Extract–LJ100® on Testosterone Levels and Quality of Life in Ageing Male Subjects." Food & Nutrition Research, 2021. Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC8254464/
Independent confirmation: A separate systematic review and meta-analysis of nine clinical trials, published independently in the peer-reviewed journal Medicina, confirmed a significant overall increase in total testosterone across studies of Eurycoma longifolia supplementation.
Source: Leisegang K, et al. "Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials." Medicina, 2022. Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC9415500/
Why this matters
Most testosterone support products list these same ingredients — but at a fraction of the dose used in the actual research. We dose Testofen and LJ100 at the levels these studies used, not the levels that look good on a label while doing less in your body. And we go one step further: every batch is third-party lab tested to confirm the active compound content matches what's on the label, not just what the supplier claims.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. The studies referenced evaluate the named ingredient or extract; they do not constitute a clinical trial of Ginger Jacked Premium Testosterone Support as a finished product.