Magnesium bisglycinate achieves 80-90% absorption via amino acid transporters (vs. 4-40% for oxide/citrate) and avoids laxative side effects, while glycine itself supports sleep and collagen synthesis.

Magnesium bisglycinate enhances GABA signaling and NMDA antagonism, reducing sleep onset latency by 15-30 minutes, increasing deep sleep (N3) duration, and reducing cortisol by ~15-20%, with absorption 60-90% via amino acid transporters.

Zinc, L-Carnitine, CoQ10, and Selenium improve sperm concentration (+30-50%), motility (+40-60%), and reduce DNA fragmentation (−20-35%) by supporting testosterone synthesis, mitochondrial ATP production, and oxidative defense.

Ashwagandha KSM-66, Korean Red Ginseng, and Muira Puama synergistically improve testosterone (+18-23%), erectile function (+60%), and sexual desire (+70%) via HPA axis modulation, enhanced nitric oxide, and dopaminergic signaling.

DHEA declines ~2-4% annually from age 30, reaching only 5-10% of peak levels by age 80. Low DHEA predicts cardiovascular disease (2.3× higher risk), bone loss, and cognitive decline; supplementation at 25-50 mg/day restores tissue-specific androgen/estrogen signaling.

DHEA 25-50 mg daily increases bone mineral density (+1.6% lumbar spine), improves sexual desire and arousal (65% vs. 36% placebo), and reduces depressive symptoms (47% vs. 23% placebo) in postmenopausal women via tissue-specific androgen conversion.