I recently purchased a tub of C4 Extreme fruit punch flavor (like I always have), opened the container and it looked like the powder had almost crystalized. Have never had that happen before. Is this normal, or is it still safe to take? Should I take it back to the store? Had to beat the tub on the counter a few times to break the powder up. Could it be due to less or more ingredients or maybe moisture got to it? If it is safe and I will get the same effects and benefits from it, I will keep it, otherwise I'm skeptical of it.