MBDB:s I was recently able to try this material for the first time. It chemically closely related to MDMA. Its designer, David Nichols, calls it an "enactogen" a term he coined for psychedelic stimulants like MDMA, but this is based on chemistry rather than effects. He says that its lacks the euphoria of MDMA and can even be dysphoric. If you are looking for an "ecstasy alternative", don't waste your money on this. I took 200mg initially orally (on an empty stomach). After about 10 or 15 minutes, I was coming up. After half an hour I felt waves of well-being washing over me, but no real euphoria. There were no visual enhancements. At the one hour point I decided on a booster of 150 mg. Ten minutes later a friend came round unexpected and started telling about a suicide case¡XI had to asked him to leave, eventually. He also said that I looked like I had had five shots of whisky. By the time my friend left, my mood had turned and I think the booster was too much. I started getting pronounced nystagmus, which was wearing. My mood became dysphoric¡XI can only describe my feelings as being like the negative mental after effects of speed or Ecstasy. After an hour or so (by which time I wished that I had spent my time and money on something else), I had a brief spell of feeling good, with MDMA type enthusiasms, but mixed with a rather drunken-type feeling. After three hours, most of the effects were gone (which pleased me). After four hours I was baseline and able to sleep. The next day I had an irritating hangover. In may respects, this material is more like alcohol than Ecstasy. Erowid has plenty of positive (if not very enthusiastic) reports about MBDB. Perhaps think the key to an enjoyable experience is too keep the dose low and to avoid a booster.