In general, Kratom intensified by MAO inhibitors, other opioids, or inhibitors of the cytochrome P450 isoenzyme.
However, there are also other plants, which serve as a booster in the mixed use with Kratom, the synergy of which is not exactly scientifically explained. There are hardly any studies on the mixing of strong MAO inhibitors (such as harmalin) with Kratom.
This combination can sometimes be fatal. It is also advisable to use Kratom for norepinephrine and serotonin in the body. In some cases, it may lead to a slight serotonin syndrome or the like. When serotonergic substances are combined with Kratom. You can buy Kratom varieties from online Kratom vendors on your location. Also you can find Kratom variants on http://discoverkratom.org/
Here are the 3 ingredients to Kratom high and keep Kratom tolerance low!