Creatine has been a tried-and-true supplement in the weight-room for decades! And with decade of studies on creatine, there are very few reported negative effects - and those case are due to a gross over-use of the supplement. You should never take more than the recommended dose of any supplement!
 
What makes it safe? Well, your body naturally produces it! Its your body's first source of fuel for activity. But, when it runs out (which happens in about 30 secs of intense activity), supplementation can give you a longer boost.
 
Creatine also helps you gain muscle in the following ways:
Boosted workload:
Improved cell signaling (which aids muscle repair and new muscle growth)
Raised anabolic hormones
Increased cell hydration
Reduced protein breakdown
Lower myostatin levels (increasing growth potential)
 
Creatine is most effective for shorter, higher-intensity workouts and strength training. There are no significant results for improvements in cardio/endurance training.
 
NOTE: All LPT pre-workouts contain 1000-2000mg of creatine. Factor that into your creatine use! Recommended dosage is 5000mg.
 
*Unflavored