If it is a true medical emergency, call 911 immediately. A person experiencing drug-induced psychosis may be a danger to themselves or others. They may believe they need to hurt themselves or others, or they may be hearing voices telling them to engage in dangerous behavior.
You must prioritize your safety at all times. If you suspect someone is having a drug-induced psychotic episode, go to a safe location and call 911. Do not try to speak to them, touch them, or calm them down. Allow the emergency medical professionals to intervene. Once the person experiencing drug-induced psychosis is stable, they can then be referred to a treatment center.