Chemsex support

Looking for information, advice or help about chemsex?
Mail to

Or call the chemsex team (also Whatsapp):
Leon: 06 - 11 16 33 41
Sjef: 06 - 15 96 87 76 

Online meeting for ex-users
For men who quit or want to quit chems.
Online meeting every Wednesday evening from 8:00 PM to 9:30 PM.
Due to corona restrictions, the meeting is not on location until further notice (check page for update)
Would you like to participate? Mail to

Chat about chems
Looking for info, support or help, anonymously?
Chat with the chemsex team.
Available every Monday to Friday between 11 a.m. and 5 p.m.
Start a conversation here

Sex and Tina
For tips and information about Tina, slamming and self-control check our site
Syringe exchange and drug test
Due to the corona restrictions, needle exchange is only possible by appointment Testing of drugs (only NPS, Tina, crack and heroin) is also only possible by appointment:
06 - 11 16 33 41 (Tue, Wed, Thu between 12 and 17)

Slam survey 2020

Mainline is looking for men who (occasionally) have sex with men, and transgender people who have experience with slamming. What is the added value? Which health complaints can arise? Which information provision works and which does not? And how can support on offer for (ex) slammers be improved? 

Share your experiences and complete the online survey!
Also for (ex) users who have stopped slamming since 2018. For more information and participation, click here.

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