This is the only exercise (muscle building) supplement I use and trust. Like with any nutritional supplement YMMV (your mileage may vary), as your genetics, dedication to your workout routine, your diet and others factors will all contribute to your results. First and foremost, it's a safe and natural product. You can do your own research if you're curious and you'll easily find years upon years of scientific supportive data. My personal experience in terms of benefits when using creatine are noticeable. An increase in strength, stamina, and energy while working out. But most importantly, yes I can see (and feel) a noticeable increase in my muscle growth. I'm small boned and smaller than most “average” sized males so my goals and results may differ from others but focus on the word results. After using this product regular for the past three weeks coupled with a consistent exercise regimen in terms of frequency and effort (yes effort!), eating a sensible diet suited for my goals (low fat, moderate calories and high protein), the benefits I am experiencing are noticeable and honestly have already exceeded my expectations. I love how easy it is to take this product, and the fact that a 2 month supply is super affordable is the icing on the cake. All I can say with certainty is this product works for me and it gets my highest Recommendation! 👍