Creatine is one of your primary energy sources. To say it doesn't work, would be foolish.
You hold more water in the muscle, when taking it, making you more full and stronger.
Drawbacks, minor creabloat. Once you stop, the water leaves the muscle cells (smaller/weaker).
Doesn't affect natural test levels.
Even krealkalyn causes bloat. Don't buy into the ph balance giving less bloat, it's inaccurate.
For a long time, I never would workout without it, but now...I'd rather have a leaner appearance, so don't bother and sacrifice strength.