Many men, and indeed women too, are looking for a quality testosterone supplement.

Testosterone is known as the "He-Hormone," the essence of what makes a man a man, but women also naturally product some testosterone and it plays a very important role for them.

As women get older, they experience a drop in female hormone, estrogen, but can also experience a drop in testosterone...and gain fat and experience a diminished libido.

This is why both men and women are looking for testosterone supplements.

Although it's been denied for years, there is a condition now referred to as andropause...which is also sometimes called "male menopause."

Andropause usually happens for men when they hit middle aged -- between 40 and 50. This condition is associated with a drop in testosterone levels, and, as a result of this, a whole host of natural consequences: lower libido, fatigue, loss of muscle mass, increase in flab, irritability, and more.

Men who hit middle aged, therefore, often begin looking for ways to boost their testosterone with a testosterone supplement rather than lose their zest for life.

Even though not every man will experience andropause to the same degree, it's a fact that as men age, their testosterone production naturally diminishes. Indeed, after the age of 30, testosterone production decreases at the rate of 2% per year!

Another group of men who research testosterone supplements are athletes who are looking for that edge, whether they be bodybuilders, weekend warriors, runners, bikers, martial artists, and more.

We all know steroids are illegal and can damage the body. But there are natural herbs that have, in studies, been shown to help boost our body's own production of testosterone naturally.

One of the most promising of these herbs that is used in quality testosterone supplements is called tribulus terrestris. It contains an active ingredient called protodioscin.

Multiple clinical studies have confirmed that tribulus terrestris increases male libido.

Clinical studies have also revealed that those who use tribulus experience increased energy and vitality. It also helps to enhance muscularity and strength.

Tribulus acts as both a libido enhancer and muscle-building supplement due to its ability to boost testosterone.

It's important to note that tribulus is not a hormone itself. Tribulus terrestris helps by increasing levels of luteinizing horomone....which is a hormone that is responsible for commanding our bodies to produce testosterone but which slows down as we age.

By increasing levels of luteinizing hormone, tribulus can indirectly lead to to a more abundant production of testosterone in our bodies.

Tribulus terrestris works by naturally increasing levels of luteninizing hormone, which then leads to a more abundant production of testosterone.

A quality all natural testosterone supplement should contain tribulus terrestris as one of its key ingredients.