Honest information about drugs
Avoid bad ecstasy pills.
Inform yourself about pill testing results and drug interactions and learn how to practice safer use.
Avoid bad ecstasy pills
KnowDrugs informs you about pill testing / drug testing results and helps you to avoid particularly dangerous batches.
Understand how drugs work
Find information about common drugs as well as new psychoactive substances (NPS). Learn about their harm potential, dosage, duration, effects and drug interactions.
Learn how to practice safer use
Taking drugs always involves risks. However, if you do decide to take drugs, KnowDrugs shows you how you can minimize risks and consume drugs more responsibly.
Know how you can help others
Know how to spot a drug-related emergency and how to react when someone might need your help.
Find confidential advice
Find support nearby with a counselling organisation. Their mission is not to make you quit taking drugs, but empowering you to take informed decisions and helping you to reduce the risks of taking drugs.
Knowledge is power
KnowDrugs is independent of governments.
We believe that objective and unbiased information on drugs is a fundamental right.
Frequently Asked Questions
What is drug checking?
Drug checking or pill testing is a way to reduce the harm from drug consumption by allowing users to find out the content and purity of substances that they intend to consume.
This empowers users to make safer choices: to avoid more dangerous substances, to use smaller quantities, and to avoid dangerous combinations.
How does drug checking work?
People intending to take drugs provide a small sample to the testing service (often less than a single dose). Test results are
Drug checking services use this time to discuss health risks and safe behaviour with
Where do the drug checking results come from?
The KnowDrugs app lists drug checking results from various harm-reduction organisations who conduct drug checking – e.g.
Some of the organisations publish the test results later on their websites which the KnowDrugs app aggregates in a reverse-chronological
Who is running KnowDrugs?
KnowDrugs is a self-started project by Philipp Kreicarek, a former Social Worker.
The goal of this project is to reduce the harms associated with the consumption of drugs by enabling people that decide to take drugs – despite the risks – to make informed decisions and to practice safer use.
This project is a 100% non-profit project and relies on donations in order to maintain and develop the app.
Is it safe to rely on drug checking results published on the internet/in the app?
No. There is no such thing as risk-free consumption of drugs.
Similar looking ecstasy pills can contain different ingredients and or strengths. Using drug checking services like
However, we believe that drug checking results should be accessible and available to those who do decide to take drugs. Drug checking results raise awareness about the fact that a high amount of ecstasy pills nowadays contain up to 4x the regular dose.
KnowDrugs is a donation-financed, independent project. Our goal is to reduce the harms of illicit drugs by making drug
The development and maintenance of the app would not be possible without supporters like you – so if you like the app please support us with your donation 🙏🏻