Does the supplement creatine affect the brain? ive saw a few post online that says it may increase depression. ive been taking it for a few weeks and i have noticed an increase in depression. im just wondering of a doctors opinion on this?

Data is mixed: Although some swear that this helps physical stamina, the data there is not fully conclusive, and there are reports of emotional changes in susceptible individuals. Likely schizophrenics and bipolar folks should avoid creatine. Since you are experiencing "an increase in depression", would recommend discontinuing. Definitely, confer with your local doctor about supplements prior to using these.