After testing hundreds of herbs and supplements over the last 10 years, I've discovered 5 that are the most effective at boosting testosterone levels. Described as the "Asian Viagra" in a May 1999 report in the New Times, this herb works by stimulating the leydig cells of the testicles to produce more testosterone.

Tongkat Ali, also know as Eurycoma longifolia Caryl is probably the most powerful and effective natural testosterone booster available. The bark of these trees has been used for centuries by indigenous people to increase libido and sexual stamina. Both come from small to medium sized trees found in the amazon rain forest. A well controlled clinical trial confirmed that this herb. Take these herbs and you'll notice stronger erections, elevated mood, and increased sexual thoughts and motivation. If you were to only buy one supplement to boost testosterone levels naturally, this would have to be it. Top 5 Herbs That Boost Testosterone Levels Naturally. Use all 5, and cycle them regularly so you don't build up a tolerance, and you'll be well on your way to boosting your testosterone levels for good.

This herb is usually taken along with Muira Puama.