I wouldn't recommend it. I had to stop taking yohimbine because it has a powerful effect for me as a stimulant. I once did what you are talking about and gave me parkinson like tremors for an hour. it didn't make me feel hyped like speed, made me feel like your overdosing or something shaking uncontrollably. Also panic attack. Real yohimbine is powerful stuff. If I tried it..maybe not over 4mg, but I threw mine out after about 3 tries at it. The amount contained in a dose of Lipo 6 didn't bother me, but any higher I would be careful, especialy with other stimulants.