Oily seed of an Indian vine, long taken as a brain tonic. Animal and cell work agrees: better learning and memory, less anxious behaviour, mood effects resembling a standard antidepressant, nerve cells surviving stress. Human evidence is all but empty. Animal harms: halted sperm production, reversible liver damage; plus user-reported stomach burning, and lead, mercury, arsenic contamination in this category. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Alanine aminotransferase | Under 25 U/L (men), under 20 U/L (women) | Detects the hepatic injury seen in rodents at high doses |
| Aspartate aminotransferase | Under 25 U/L | Confirms and contextualises any alanine aminotransferase rise |
| Blood lead | Under 1 µg/dL, ideally undetectable | Screens for the documented contamination of this product category |
| Low-density lipoprotein cholesterol | Under 100 mg/dL, and lower with existing cardiovascular risk | Tracks the rodent lipid-lowering signal and any additive effect with statins |
| High-sensitivity C-reactive protein | Under 1.0 mg/L | Tracks the anti-inflammatory claim, the plausible route to any felt benefit |
| Total motile sperm count | No established target; change from the individual's own baseline | Directly addresses the arrested spermatogenesis found in rats |
Cadence: Liver enzymes at 8 weeks, then 6 months, then every 12 months while use continues. Lipid panel and high-sensitivity C-reactive protein at 12 weeks. Semen analysis banked before starting and repeated at 6 months. Blood metals retested only where the product source changes or unexplained symptoms appear.