Key Takeaway
Purified shilajit (250mg twice daily for 90 days) increased total testosterone by 19% and free testosterone by 20% in healthy men aged 45-55.
Summary
This double-blind, placebo-controlled trial examined the effects of purified shilajit (Primavie) on testosterone levels in healthy male volunteers aged 45-55 years.
Participants took 250mg of purified shilajit twice daily for 90 consecutive days. The study measured total testosterone, free testosterone, DHEA, and gonadotropins at baseline and after treatment.
Results showed significant increases in both total and free testosterone compared to placebo, supporting traditional claims about shilajit's effects on male reproductive health.
Methods
- Double-blind, placebo-controlled design
- 75 healthy male volunteers aged 45-55 years
- Purified shilajit (Primavie) 250mg twice daily
- 90-day treatment period
- Measured testosterone, free testosterone, DHEA, FSH, LH
Key Results
- Total testosterone: 19% increase vs placebo (p<0.05)
- Free testosterone: 20% increase vs placebo (p<0.05)
- DHEA maintained at higher levels
- FSH and LH levels within normal range
- Good tolerability with no adverse effects reported
Limitations
- Relatively small sample size (75 participants)
- Single-center study
- Industry-funded (Natreon Inc., manufacturer of Primavie)
- Only studied healthy men aged 45-55
- Did not assess clinical outcomes (libido, energy, etc.)