In the past, we knew very little about the science of plant extracts. But over the past 20 years, we have learned a great deal about how they prevent diseases and how they affect cells — and even influence special cell-signaling processes within cells.

In addition, we know a great deal about their chemistry and how they are absorbed and distributed in the body.

In fact, we now know a great deal more about these compounds than many of the drugs that are commonly used.

One of the most remarkable effects of vinpocetine is enhancement of cognitive ability (thinking), memory, and attention, as demonstrated in studies on both animals and humans.

It has the ability to increase the levels of several neurotransmitters in the brain, including noradrenaline, dopamine, and acetylcholine.

These neurotransmitters are especially vulnerable in the aging brain, as well as for people with specific neurological disorders such as Parkinson’s disease and Alzheimer’s dementia.

Another property of this extract — which is widely available at health food stores and on the Internet — is that it raises the level of a special brain chemical called adenosine, which not only protects the brain but also reduces seizures.

Yet another very important effect of vinpocetine is that it significantly increases the blood flow through the brain, especially in smaller blood vessels that are so critical to brain function.

Unlike drugs that increase brain blood flow, this extract does not cause what is known as a “steal phenomenon.”

When a stroke occurs, blood is shunted around the area that has been damaged. Opening blood vessels even further by using drugs can cause blood to be shifted away from the damaged area to other parts of the brain — that is, stealing the needed blood supply.

Vinpocetine actually increases the blood flow to the damaged area of the brain.