Effects last up to 4-6 hours but it really depends on the person and the comedown takes 2 hours to come back from you rush. You will feel messed up for a few days afterwards, don't do it.
Individual patients vary. It also depends on the length of time or the patients pain threshold as to how much Novocaine the dentist gives them and what procedure the dentist is doing. Therefore, the...
If you have pure MDMA and you take approx. 2mg per kilogram of bodyweight, you should be able to sleep after 6 hours. there is an 'afterglow' period of one to two days as well, though it's all...