25 male, 5'10" (178cm), 135 lbs(61kg), I just can't seem to gain weight. Sometimes through my own fault. For example, I'd have a strict diet but not a regular workout routine, or vice versa. All the pieces haven't fallen together at the same time. So, I'm considering taking creatine this time after seeing so many of my skinny friends bulk p super quick. My question is, is creatine safe? I'm very paranoid about these things so I didn't start taking whey until last year, and only a month ago, I decided to take weight gainer. I work 9-5 so cooking hasn't been as regular anymore.