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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
Pre-workout can help boost energy before exercising, but is pre-workout bad for you? Doctors and sports dietitians explain the benefits and side effects.
Pre-workout may contain vitamins, creatine and caffeine. Is it worth trying?
Pre-workout supplements contain a variety of ingredients such as caffeine and creatine, differing by capsule or powder products. [2] [3] The first pre-workout product entered the market in 1982, and since then the category has grown in use. [4] Some pre-workout products contain ingredients linked to adverse effects. [2]
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]
Methylhexanamine (also known as methylhexamine, 1,3-dimethylamylamine, 1,3-DMAA, dimethylamylamine, and DMAA; trade names Forthane and Geranamine) is an indirect sympathomimetic drug invented and developed by Eli Lilly and Company and marketed as an inhaled nasal decongestant from 1948 until it was voluntarily withdrawn from the market in the 1980s.