Mebroqualone (MBQ) is another attempt to capture the popularity of methaqualone with an unscheduled analogue. It seems very rare, with no available reports but some mention of prior appearances on the grey market. As with its relatives, it is likely that MBQ is a GABA agonist and appears to be fairly potent, similar to methylmethaqualone (MMQ). This is strange given the “normal” potency of mecloqualone in the 100mg range.

Mebroqualone structure


The effects seem similar to those that methaqualone is reputed for, a pleasant disorientation and depressant effect, going a little further than the simple anxiolytic and sedative effects of benzodiazepines. This makes it a little more fun, and coupled with the short duration this could make it quite suitable for a party setting if it is similarly active orally.

Dose: 15-20mg sublingually

Duration: 60 minutes

Description: A potent yet short-lived quaalude. The depressant effects are quite pleasant, making the short duration a shame.

My Experiences

Being initially quite unsure of the dosage, I worked up very slowly with this. It emerged that it was active in the same range as MMQ, but perhaps with a slightly shorter duration. Given that MMQ doesn’t last very long as is, this is far from ideal but it seems to be quite pleasant anyway.

It is a fine white powder which is highly insoluble in water and 50:50 isopropanol water. Like MMQ it is not bitter at all, and seems to be less sour too. By comparison, etaqualone is slightly bitter, but still nothing compared to phenethylamines, for example.

When vaporised I found there was a faint taste of chlorine. I’m not exactly sure what caused this but it is not something I noticed before, but it put me off instantly.

The threshold effects are very minor at about 5mg, but are noticeable. Sublingual should not be ideal with this, as the solubility is low, but it does seem to work. Holding 10mg for as long as possible, I noticed effects within a few minutes, a pleasant disorientation. After 15 minutes effects did not seem to be intensifying, remaining at a subtle but pleasant level. After 45 minutes the effects were clearly waning and I went for another 15mg sublingually. Again, the effects came on again quickly and began to fade after 25 minutes.

At this point I climbed into bed and quickly fell into a pleasant sleep.

Overall a lovely compound, but realistically too short-lived to gain much popularity.


Posted on July 1, 2012, in Depressants, Quaaludes and tagged , , , , , , , , . Bookmark the permalink. 2 Comments.

  1. What was the vaping temperature you used?

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