I dont think the amount matters, it how it affects you. i took it for bipolar and was stable for the first time ever. i took 5 when i was at my worse and when done to .5 when i was on other meds with it and doing well. i'd take more or less depending on how i was feeling. but when i took five for long periods of time when i was doing well, people noticed that i seemed drugged up and not thinking clearly, but if i was really manic, i needed this much to function right. all our bodies are different and require different dosages to be effective. i am very sensitive to meds so dont need a lot. i get pdocs that let me play based on my cycles.