First, there has never been any evidence in any scientific journal that creatine is harmful (when used properly). Most claims of creatine being harmful is usually from a combination of people taking way too much and not drinking enough water. Most claims of creatine being harmful come from people who either took too much or already had a pre-existing kidney condition. There has been alot of research on this topic, and none of it has ever shown creatine to be harmful. Also, I would not rely soley on MuscleMilk as a primary source. MuscleMilk is a great product, but it is just one product; and depending on what you are trying to do, may not be the right product for you. If you workout at a really high intensity then, yes, maybe this would be a great thing for you to take as a pre-workout or recovery supplement. But if all you are doing is running and pushups, I wouldn't use MuscleMilk. Not because it doesn't help you, because it does. Maybe not to the degree that it would help you with resistance training, but it will help somewhat. Anyways, I wouldn't use MuscleMilk in your case because you won't need creatine ALL the time. The literature is pretty unanimous in that if you jsut take creatine for about 6 weeks as directed, you can then go off it for about 10-12 weeks because creatine tends to build up in your system--to a point. And after that point the rest is jsut going to waste.
If you are looking for a good recovery or pre-workout drink just go buy a whey-protein powder and then if you feel that you need other supplements such as creatine and/or glutamine, etc. then you can buy them separately (as needed) and still get results as well as probably saving a little money in the long run.