You can try 1, and after an hour and a half take another one, just to start with that, I think the effects are pretty noticeable with 2 gummies, 1 only might not be enough for some people. First day I tryed 3 and an hour after took the fourth. It was too much, but I handled it, because I can stop bad trips because I believe they are psychological. Next day tried 1, then I went to work out, and got back from the gym an hour after, and ate another one because I felt like I wasn't feeling it (as soon as you think that it usually hits), and the effect was perfect, not too high, but clearly having the effects. Another day I tryed only 1 and the effect was kind of low but noticeable. Over all, I would suggest taking one, waiting an hour and a half, and if you feel like you need more, take another one, but there's no need to take more than that in my opinion, if you wait another hour and a half, take another one if you want, it depends on the effect you want to get. They last a lot, if you want to get high for the whole day I think 4 could do the work, but it depends on the individual and how high you want to be. This is an awesome product, I might not be buying more because it makes me eat a lot, but that's again on the individual, some people stop eating. I recently discovered HHC and I can't really notice the difference between THC or HHC. To me it is just as good, but in a drug test they will search for THC, and not HHC, so that's good.