1 gram won't do much. It will have some effect, but your body weight has a lot to do with it. My first time I ate half an 1/8, which was great for a first timer, second time I did it, I only ate a gram, didn't do much though, a few visual effects was all I got, now I eat 5 grams when I do them. But oh well, if a gram is all you got, then thats all you got, good luck with it.