If you are a patient or a potential patient, I would encourage you to read our brain-friendly products page for more information and to make your final decision on what product to buy. The bottom line is that you should try everything at least once. There may be some benefits you can't achieve from a single product, so be patient. But if a product is not for you, you can always switch to another one or look for a different product. Brainpower products that have been tried in our lab or elsewhere in the brainpower community will be labeled with an asterisk (*). The asterisk indicates a different product, although we've found some brainpower products that are quite useful for many people. As a result of the above, some companies have developed products that don't have an asterisk. For example, a product called the Brainwave Generator (also known as the Brainwave Retraining Machine) works for people who have low-power, high-frequency brain waves and don't have electrodes implanted into their brains. You can find the Brainwave Generator on Amazon. Brainpower, for example, makes a product called Brainwave Booster. There are also products that target only low-frequency brain waves, such as the BrainWave Amplifier and the Brainwave Trainer.