Caffeine and alcohol are the two most popular psychoactive substances in the world.
The doctor warned me that these pain medications have psychoactive effects.
Starbucks and McDonalds are ubiquitous in America.
While Coca-Cola is a relatively new invention, it is now ubiquitous around the world.
I was overcome by the jitters before I gave my presentation to the class.
The public jittered after war was declared.