Fadogia Agrestis is a plant that grows in Nigeria. The stem and root has been used by native traditional doctors for centuries for erectile dysfunction, low testosterone, and decreased sex drive.
It can be taken in the powder format (after it has been dried) or as a tea.
Traditional Doctor harvesting
Fadogia for Test Boosting
When administered in clinical studies Fadogia Agrestis significantly boosted sexual behavioral traits including libido, sexual interest, and dominant behavior.
Researchers predicted that the reason for the dramatic improvement in sexual function and interest was the spike in testosterone. Blood tests showed that there was a direct increase in serum testosterone levels regardless of the dosage.
Fadogia even help increase time to ejaculation 250%, making this just about the only herbal supplement that can aid premature ejaculation..
Andrew Huberman Talks About Testosterone Optimization on Joe Rogan Podcast
How Does it work?
Fadogia Agrestis mimics Luteinizing hormone which is the horomone that comes from the hypothalamus which stimulates the testes to produce more testosterone.
Fadogia Agrestis can significantly increase Testosterone when taken at 600mg or more.
Clinical studies (in animals) have shown increases to testosterone at any dosage.
One study published in the Asian Journal of Andrology found that Fadogia Agrestis supplementation significantly boosted libido, sexual interest, and dominant behavior in rats. 
Increase in Testosterone
The researchers predicted that the reason for the dramatic improvement in sexual function was a spike in testosterone. Blood tests showed that there was in fact a direct increase in serum testosterone levels in the group that took the Fadogia Agrestis supplement. 
Simple and Effective
Zafrine contains 1,000mg per serving of 100% Fadogia Agrestis. No fillers. Ever