Below is a quick repository of info on the most common "party" drugs in Leeds, but remember that having all the info doesn't mean you're safe, just that you are less likely to encounter harm. Drugs react to different people in different ways, so make sure you're accounting for that in your research.
Websites like drugsand.me, tripsit.me and erowid.org have huge amounts of information on a wide range of drugs.
Leeds University Union has recently passed policy to enable them to provide drug testing kits for students. However, as policy from LUU lasts for 3 years we don't quite know on what time scale they have in mind to implement this.
Reagent testing kits can be purchased from https://www.eztestkits.com/en/, however, we don't endorse using drug testing kits without understanding both their uses and their limitations in full. A reagent testing kit does not guarantee your safety, but is just an indicator to help reduce harm.
Taking regular sips of water to stay hydrated is always a good way to ensure you're staying as safe as possible. If you're dancing, sweating, drinking alcohol, taking drugs or a combination of the lot, then you're likely to get dehydrated quickly!
Also, taking a small amount of the drug and seeing how it affects you is a great habit to get in to before taking any more. There's loads of reasons your body might not react how you expect so be sure to keep this in mind every time.
For more tips on how to look after yourself more generally, Forward Leeds have a great set of materials at the bottom of their campaign page here.
If you are worried about a friend's drug use, or your own, then there are a number of people you can speak to.
In an emergency, don't delay ringing 999 for an ambulance. From the Talk to Frank website:
"If you're with someone who needs medical help, call an ambulance and tell the crew everything you know about the drugs taken, it could save their life. If you have any drugs left, hand them over to the crew as it may help. They won't tell the police."
If you are a University of Leeds student, Leeds University Union's advice service is free, confidential and on campus. As they are used to supporting students through all sorts of problems, big and small, they're really clued up on University and Accommodation disciplinary procedures, how to help with mitigating circumstances and extension requests, and know what services are on offer around Uni and Leeds.
Forward Leeds are an external service that connect up alcohol and drug support in Leeds. From their contact page there is simply one number to ring if you need support, or you can self-refer using the form on the page.