The upshot is that it is basically the high caffeine

[umejan3]

The upshot is that it is basically the high caffeine content of guarana that allows its use as a stimulant  Alpha ZXT that can boost not only energy, but also reduce appetite and act as an effective weight loss supplement. However, used excessively it can lead to nervousness and while it is included as an ingredient in many foods and drinks, you should be careful when using it as an energizing supplement if you have any heart problems at all.Otherwise, guarana is used to energize the body naturally, and is not only very commonly used for this purpose in South America, but also increasingly so in the USA and elsewhere with some very good results.  http://www.supplements4help.com/is-alpha-zxt-scam-or-fake/