The ECA stack is probably the best-known and most popular superfat burner of all. Caffeine is often replaced by guarana extracts or kola nut. Ephedrine contains so-called ephedrine alkaloids, while white willow bark contains salicin, the very substance from which acetylsalicylic acid is obtained. Acetylsalicyl, on the other hand, is obtained from an extract of white willow bark. Caffeine is obtained from green tea, guarana and the cola nut. The ingredients at a glanceĮphedra is also called ephedrine, Sida Cordifolia or Ma Huang. ![]() However, because acetylsalicylic acid and ephedrine are available only on prescription in the doses used in the studies, the industry turned to plant extracts that supply these active ingredients. The supplement industry naturally took advantage of these findings and quickly developed ECA stacks, which are used in fitness and bodybuilding. Scientists found out that the individual ingredients do not have too much influence on fat burning, but that the combination of these active ingredients has a superpotent effect because they reinforce each other. Impressive results were obtained, especially in the 1990s. The combination of acetylsalicylic acid, ephedrine and caffeine, from which these fat burners are also named, was investigated in scientific studies from the 1980s onwards. Thanks to their effective combination of active ingredients, super fat burners from the USA make it possible to literally melt body fat. ![]() Get lean with the best ECA stacks from the USA
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