Table 2 Reported Frequency of MDMA-related Harm Reduction Strategies (n = 915)

I source/buy my MDMA from a reliable and trusted person

46.0

41.1

9.0

3.4

0.5

I plan my use of MDMA in advance

37.3

42.1

14.4

3.5

2.7

I take MDMA that is offered to me by strangers

1.7

3.8

16.9

32.7

44.8

When I take MDMA, I don’t take too much so that I am always in control and aware of my surroundings

35.8

38.5

18.5

6.0

1.2

I set a limit on how much MDMA I will take in a session and do not exceed that limit

32.0

29.0

18.5

14.3

6.2

I am cautious about mixing MDMA with other stimulant drugs

38.8

26.9

20.1

9.6

4.6

I am cautious about mixing MDMA with alcohol

18.5

19.8

17.3

26.2

18.3

I space out the occasions where I use MDMA well

33.6

30.6

18.5

11.4

6.0

When I take MDMA, I wait until I am feeling the effects before taking another dose

48.6

29.4

15.6

4.0

2.3

I am confident that my MDMA is actually MDMA before I take it

32.5

41.3

16.8

7.4

2.0

Following MDMA use, I make sure to get a good amount of rest

36.3

41.2

17.3

4.2

1.1

Prior to and following MDMA use, I make sure to have a healthy amount of nutrients (food, supplements, water)

33.4

36.4

20.2

6.6

3.4

I seek out information about MDMA online when I want to know something

48.5

25.0

16.2

5.7

4.6

I seek out information about MDMA from people I know and trust when I want to know something

30.3

32.3

27.0

6.9

3.5

If a substance I thought was MDMA turns out to be another substance that I have not used, I seek out information about that substance online before deciding whether to consume it

58.6

18.3

12.7

4.7

5.8

If a substance I thought was MDMA turns out to be another substance that I have not used, I seek out information about that substance from people I know and trust before deciding whether to consume it

41.0

26.0

19.8

7.3

5.9