Should I take Creatine?

I am a teenager (19) working out about 5 times a week. I got a hold of some creatine and unsure about taking it. I heard bad and good things about it but I need more opinions about creatine. Here is a link to the product:... show more I am a teenager (19) working out about 5 times a week. I got a hold of some creatine and unsure about taking it. I heard bad and good things about it but I need more opinions about creatine. Here is a link to the product:

http://www.gnc.com/product/index.jsp?productId=2523106&cp&sr=1&origkw=celltech&kw=celltech&parentPage=search

OR:
Should I just take Whey Protein and not creatine? or both?
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