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5 Side Effects of Pre-Workout Supplements. The five most common side effects of pre-workout include: Feeling jittery. Increased water retention. Digestion issues
Ephedrine (usually as Ephedra extract) was a common ingredient in many pre-workout supplements in the 1990s and early 2000s, sometimes in combination with caffeine and aspirin (the so-called ECA stack), however, following many reports of serious side effects and some deaths, it was banned for use in supplements by the FDA in 2004 throughout the ...
Doctors and sports dietitians explain the benefits and side effects. Pre-workout can help boost energy before exercising, but is pre-workout bad for you? Doctors and sports dietitians explain the ...
Pre-workout may contain vitamins, creatine and caffeine. Is it worth trying?
Combined drug intoxication use often carries with it more risk than use of a single drug, due to an increase in side effects, and drug synergy. The potentiating effect of one drug on another is sometimes considerable and here the licit drugs and medicines – such as alcohol , nicotine and antidepressants – have to be considered in ...
Drugs with similar structures and biological activity are also banned because new designer drugs of this sort are always being developed in order to beat the drug tests. Caffeine, a stimulant known to improve performance, is currently not on the banned list. It was listed until 2004, with a maximum allowed level of 12 micrograms per millilitre ...
Other products by supplement designer and CEO of Driven Sports, Matt Cahill, have contained dangerous substances causing blindness or liver damage, and his pre-workout supplement Craze was found to contain illegal stimulants [44] that resulted in several athletes failing drug tests. [45]
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