It’s a flavorless powder you mix into a drink. It unfortunately doesn’t really dissolve, so it can be a little grainy if taken with water but it’s mostly flavorless so outside of that you wouldn’t notice it.

5g/day is the general recommendation and most packaging will come with an appropriately sized scoop, notably this is one of the rare ones where dose doesn’t seem to be adjusted by age or bodyweight. I presume because it’s cheap, well-studied, and there don’t appear to be downsides for overdoing it. They’re testing it at up to and possibly above 25g/day for Alzheimer’s.

Some people recommend a higher “loading” dose for the first two weeks to build up reserves in your body more quickly, but if the goal is to start taking it daily, this is really unnecessary.

> there don’t appear to be downsides for overdoing it

There may or may not be a downside depending on what one considers a downside.

In one of my other comments I just made in this thread, I mentioned my experience taking relatively large doses of 20g a day. While I found it has cognitive benefits, it did interfere with my sleep, though not catastrophically. If a person happens to enjoy sleep, then it's probably best they stick to 5 or 10 grams. On the other hand, if you need to pull an all-nighter, the sleep interference (as well as the better recovery the following day) may not be seen as a downside but beneficial.

But yeah, from a toxicological perspective, creatine does seem very safe even at those doses.

search the micronised version, it is so fine it looks like it disolves completely.