Based on numbers from an exhaustive 10 year, 27,000 subject study between 2006-2014, it seems that The Netherlands holds rank as possessing the highest rates of MDMA found in its ecstasy pills, coming in at some 70.5%, topping the United States, Canada, Australia, and Great Britain.

The study was part of a five country analysis, published by, which in turn was based on user generated content found on  According to the study, pills from each country were tested for their active ingredients, as well as any number of 30 pollutants.  For example, while Netherlands tops the poll, the flip side see’s that only 34.7% of American pills contain MDMA. Additionally, only 34% of British pills contain the active ingredient while topping the list, at 8.6%, for the amphetamine like “Piperazine”.

Across the five countries, the 67.1% of the total pills contained MDMA, or a substance virtually non-distinguishable to it.  Consequently, Australia found itself in the dubious position of holding the highest percentage of pills (24.2%) with unknown chemistry, closely followed by Great Britain.

In analysing thousands of user generated pill reports, we can conclude that most ecstasy pills (that have been tested by users and submitted to the database) do contain MDMA or, at least, an MDMA-like substance. But how much MDMA is in any given pill, and whether it’s mixed with amphetamines, is down to chance and geography. Canadian pills, for example, almost always contain some speed, whereas those from the Netherlands, where pill testing is much more common than any of the other four countries we looked at, are much more likely to contain just MDMA.

As MDMA purity is on a 10-year high, it is important to understand its differentiation from ecstasy and “Molly”, as well as the potential for additives, as the wrong combination could be as deadly as any single MDMA substitute.  It seems as though the Netherlands has consistently held the distinction of having the “cleanest” pills, featuring the least amount of dangerous additives or negative user experiences.

For a more in depth look at the study, as well as its results, the chart below is a good place to start.