Abs with eye-catching six-pack is a man’s pride and to have this type of eye-catching body shape, men tend to do muscle building and with the help of a few of the known muscle-building supplements like the creatine powder. For those who are not yet familiar with creatine, it is an athletic aid that helps increase an athlete’s performance. However, despite of the benefits it can bring, creatine also has numerous side effects like the possibility to gain excess weight because taking creatine will let the users experience fluid retention. Other side effects include abdominal cramping, discomfort and nausea. However, despite of it all, many still consider creatine as one of the best muscle-building supplements available.