Supplement Directory
Browse our directory of the primary herbs, minerals, and amino acids studied for their ability to support testosterone synthesis, muscle growth, and performance.
Hormone Support
D-Aspartic Acid (DAA)
An amino acid regulator of testosterone synthesis. It stimulates Luteinizing Hormone (LH) in the brain, signaling the Leydig cells in the testes to increase natural testosterone production. Clinical trials show substantial increases in active free hormones within 12 days.
Clinical Findings
- A landmark study published in Reproductive Biology and Endocrinology showed a 42% average increase in free testosterone after 12 days of daily 3.12g DAA supplementation.
- Research in Journal of the International Society of Sports Nutrition suggests standard clinical 2-3g doses are optimal; resistance-trained men should avoid excess doses (6g+) to prevent feedback regulation.
Safety & Tolerability
Excellent safety profile at clinical doses. Minor side effects might include mild digestive discomfort if taken on an empty stomach. No hepatic or renal strain reported in literature.
Stress & Focus
KSM-66® Ashwagandha
A premium, highly bioavailable root extract of Ashwagandha. It functions as an adaptogen to lower cortisol levels by up to 27%. Lowering cortisol directly prevents stress-induced testosterone drops.
Clinical Findings
- A double-blind, randomized, placebo-controlled study published in the Indian Journal of Psychological Medicine demonstrated a 27.9% reduction in serum cortisol levels alongside significant improvements in stress assessment scales.
- Research in the Journal of the International Society of Sports Nutrition showed that participants taking KSM-66® experienced a 16.7% increase in serum testosterone levels and significantly greater increases in muscle strength and recovery.
Safety & Tolerability
Excellent safety profile with no significant adverse events reported in clinical trials. As an adaptogen, it naturally supports somatic equilibrium. Individuals with nightshade sensitivities should use caution.
Vitamins & Minerals
Zinc (Citrate/Picolinate)
An essential trace mineral that regulates immune function and hormone production. It acts as an aromatase inhibitor, blocking the conversion of active testosterone into estrogen, preventing severe hormonal drop-offs.
Clinical Findings
- A classic study published in the journal Nutrition showed that restricting dietary zinc in healthy young men led to a 50% drop in serum testosterone after 20 weeks, while zinc supplementation in marginally zinc-deficient elderly men doubled testosterone levels.
- Research on elite athletes demonstrated that zinc supplementation prevents the exercise-induced depletion of thyroid hormones and testosterone, preserving athletic performance capacity.
Safety & Tolerability
Extremely safe at standard dietary doses. Prolonged daily dosages exceeding 40-50mg should be balanced with small amounts of copper to prevent secondary copper deficiencies.
Vitamins & Minerals
Vitamin D3
A fat-soluble vitamin that acts as an endocrine hormone precursor. Essential for maintaining healthy testosterone levels, supporting muscle protein synthesis, bone density, and overall metabolic health.
Clinical Findings
- A randomized controlled trial published in Hormone and Metabolic Research found that men receiving 3,332 IU of Vitamin D3 daily for a year experienced a significant increase in total testosterone (from 10.7 to 13.4 nmol/L) and free testosterone.
- Cohort studies demonstrate a direct linear correlation between serum 25-hydroxyvitamin D levels and circulating bioactive testosterone levels in healthy males.
Safety & Tolerability
Extremely safe up to 10,000 IU daily. Periodic blood testing is recommended for long-term high-dose supplementation to verify optimal blood range (50-80 ng/mL) and avoid hypercalcemia.
Libido & Stamina
Fenugreek Extract
A traditional herb rich in furostanolic saponins. Clinical studies demonstrate fenugreek supports high libido, metabolic energy, fat-burning pathways, and helps maintain healthy free testosterone levels by inhibiting SHBG.
Clinical Findings
- A clinical trial published in Phytotherapy Research showed that 600mg of Fenugreek extract daily for 6 weeks significantly improved sexual arousal, muscle strength, and self-reported energy levels in healthy men.
- A double-blind study observed a significant increase in both free and total testosterone levels, along with reductions in body fat percentage, over an 8-week resistance training program.
Safety & Tolerability
Very well tolerated. A common, harmless side effect is a faint maple syrup odor in sweat or urine. Individuals with severe allergies to chickpeas or peanuts should exercise caution.
Absorption
AstraGin® Extract
A proprietary plant-derived compound composed of Astragalus and Panax Notoginseng. It is clinically proven to enhance the absorption of active amino acids, vitamins, and minerals in the gut, amplifying supplement potency.
Clinical Findings
- Transporter research shows AstraGin® significantly upregulates absorption transporters like CAT1 (amino acids) and SGLT1 (glucose) by up to 50% to 200% in intestinal epithelial cells.
- Intestinal health trials demonstrate that AstraGin® helps restore damaged microvilli and reduces gut wall inflammation, improving the physical absorption area for complex compounds.
Safety & Tolerability
GRAS (Generally Recognized as Safe) affirmed. Composed of natural astragalus and ginseng extracts, it has zero reported toxicities or adverse interactions at clinical dosage thresholds.
Libido & Stamina
Korean Red Ginseng
A traditional root extract rich in ginsenosides. It supports nitric oxide levels and vascular health, improving physical circulation, reducing training fatigue, and supporting sexual drive and vitality.
Clinical Findings
- A systematic review in the British Journal of Clinical Pharmacology concluded that red ginseng is effective in clinical trials for improving erectile function and sexual performance compared to placebo.
- Studies on physical performance indicate that ginsenosides reduce muscle damage markers (like creatine kinase) and systemic oxidative stress after intense exercise.
Safety & Tolerability
Highly safe for long-term consumption. Since it possesses mild adaptogenic stimulant properties, individuals taking blood pressure or diabetic medications should consult a physician.
Hormone Support
Nettle Leaf Extract
Contains compounds that bind to Sex Hormone-Binding Globulin (SHBG) in place of testosterone. By occupying SHBG binding sites, nettle leaf releases more active free testosterone into the circulation.
Clinical Findings
- Research published in Journal of Herbal Pharmacotherapy indicates that stinging nettle lignans bind strongly to SHBG, inhibiting the binding of active testosterone to transport globulins, thereby raising free testosterone.
- Clinical observations confirm that nettle leaf compounds possess mild 5-alpha-reductase inhibitory action, helping to regulate the conversion of testosterone into DHT, supporting prostate health.
Safety & Tolerability
Excellent safety history. It has a mild diuretic effect; ensure adequate daily hydration. Minor stomach upset occurs in less than 1% of clinical trial participants.
Vitamins & Minerals
Magnesium & Boron
Magnesium promotes muscle relaxation and energy production. Boron is a trace mineral that decreases SHBG levels and raises free testosterone, making this synergistic combination essential for cellular recovery.
Clinical Findings
- A study in the Journal of Trace Elements in Medicine and Biology showed that daily supplementation of 10mg of Boron for just one week significantly increased free testosterone levels and decreased SHBG and estrogen.
- Research on athletes taking Magnesium showed that supplementation increases both free and total testosterone levels, with greater benefits observed in active subjects.
Safety & Tolerability
Extremely high safety index. Excess magnesium can cause mild laxative effects if taken in isolation at extreme dosages. The formulated clinical amounts are safe and well-tolerated.
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