Because kratom has to be broken down and digested before it becomes fully active, your diet can play a large roll the effects of kratom has for you. Although many users differ on when to eat before taking kratom, it can play a large role on the effects that it has.
The most common and “purist” stance is to take kratom on a fully empty stomach. The reasons for this are obvious, as the kratom is digested a lot faster and doesn’t have to wait to be absorbed the rest of the food in your stomach. However, when kratom is taken on an empty stomach, the effects tend to wear of much more quickly, this is especially noticeable if you take kratom in the morning before eating.
Another common school is to eat a light meal or snack around 45 minutes to an hour before dosing. This tends to delay the onset of kratom slightly, but improves the duration. The fat content can also help some of the other alkaloids absorb faster than they would have on a purely empty stomach. Many users say that this helps provide a more complete feeling to the kratom than simply taking it on an empty stomach, you can see many varying opinions on this topic here.
Although I have some experience with both of these, I can’t simply choose one over the other. If you want the best of both worlds, I highly suggest taking kratom on an empty stomach along with some source of fat. This could be an avocado, or simply a coffee with cream (my personal wake-up routing).
As you mature in your kratom usage, you will quickly find out what works best for you and what doesn’t. I know people who only take kratom on an empty stomach and others who will only take it when they eat. Even then, some strains may be better for you after or before eating, so trial and error is essential.
I wish you the best of luck, and I’m sure you’ll find what’s best for you.