Call 999, if you or someone you are with becomes a danger to themselves or others. Remember mental health should be taken as seriously as physical health. 
​
The NHS has information here on what to do if you find yourself, or someone you are with, in a mental health crisis.
​
If someone has had a negative reaction or an overdose to a substance they have taken: it is important to let the ambulance team know as much information about what they have taken as you can as this could help save their lives. 
​
FRANK has guidance here if you find yourself in this situation.