Unfortunately there's no such thing as "quad stacked" or the like. It's just bullshit dealers made up.
If you feel you're having a medical emergency contact emergency medical services.
We don't know what was in the pills you took man, sorry. My advice is to invest in a test kit and find out for yourself if a pill is good or not instead of relying on what a dealer told you.
Since we don't do substance IDs here I'm going to close this thread.