Actually, I love creatine. But I take it a very specific way. In my coffee. That being said, it has been a while since I've taken it regularly. But it is one of those supplements that, when I have kept it up regularly, really made a noticeable difference for not only my energy levels, but my overall alertness too. Anecdotally, I believe creatine has helped me when playing chess, for example.
I theorized that the diuretic nature of coffee and the osmotic effect of creatine would balance nicely when taken together, and the most significant trial period of this hypothesis for me was during the time just before my Covid layoff and subsequent dive into knife making as a living. I was riding about 3 miles each way on the bike to work, with hills both ways, and also doing significant kettlebell work at home at least a few times a week. I also sometimes brought my small kettlebell to work, where each break I would do some kind of movements with them outside. Anything from kettlebell juggling, to weighted pistols.
The kicker, at this time, I was consuming two coffees per 3 pm to 11 pm shift, both to be finished before 6 pm, after which I would drink the same volume of water until the end of the shift. Both coffees contained creatine and L-glutamine, as well as coconut oil. I felt great. In the two years or so I was following this format, I cannot remember a single day of illness, and I never felt physically tired. Would have been my mid to late thirties.
But
PĂ druig
if you didn't like how it made you feel, my guess is you took it with cold beverages? I tried it initially with cold or not hot liquids, but hated the "brick in the stomach" feeling it gave me. Once I tried it with hot liquids, I never looked back. In fact to this day I very much dislike drinking anything that is cold, with the occasional exception of a beer if I'm visiting my brother.