Many weight loss supplements come packed with caffeine, and a lot of atheletes use it during training to stimulate themselves. Although chronic caffeiene use will lessthen the boost in strength you receive from your creatine supplement.
Studies have shown that extended caffeine use completely destroys the physical benefits typically afforded by creatine use. By contrast, a single dose of caffeine immediately before exercise either has no effect or even enhances the improvement in strength observed with creatine. Therefore, at least as far as creatine is concerned, chronic caffeine consumption appears to be much more counterproductive than an occasional cup of coffee.
If you are serious about getting the most from your creatine supplement, try to avoid use of caffeine. Studies show that the equivalent of three cups of coffee per day for as little as three days is sufficient to completely negate the benefits of creatine in your system. Although an occasional cup of coffee doesnâ€™t seem to do much harm..