Vivarin Information

What's inside Vivarin

Recent Vivarin Side Effects

Posted by anon1234 about 1 year ago
I got a free sample from my college when I bought stuff from our on-campus bookstore. I was feeling tired one night and had a...

Vivarin in the News

So It Goes: Sleeping in late is no cause for alarm - Ventura County Star
We got Red Bull, Vivarin, Buzz Bites, Regis and Kelly Then we skid away to our next appointment — no time to say goodbye, hello, I'm late, I'm late, ...
Sun Feb 10 03:03:37 -0500 2008

DCI: Men tried selling caffeine pills as ecstasy - The Casper Star Tribune
After a couple of buys, agents learned the pills were actually Vivarin. The active ingredient in Vivarin is caffeine, according to its Web site. ...
Tue Feb 12 04:17:59 -0500 2008

Keyboard Quarterback: Super Predictions - RealGM.com
In-between rapid play scribbling and shots of Vivarin, a light bulb shines above Belichick’s hoodie-covered head. He lunges for his cell phone and dials ...
Fri Feb 01 12:35:26 -0500 2008

Vivarin Chemical Information

caffeine - A naturally occurring xanthine derivative with central nervous system (CNS) stimulating activity. Due to the structural similarity to adenosine, caffeine binds to and blocks adenosine receptors, thereby preventing the inhibitory effects of adenosine on nerve cells. This leads to stimulation of medullary, vagal, vasomotor, and respiratory centers in the brain; and the release of epinephrine. Physiologic responses can include bradycardia, tachycardia, vasoconstriction, CNS excitablility, increased respiratory rate, increased blood pressure, increased blood flow to muscles, decreased blood flow to skin and inner organs, and release of glucose by the liver. Due to the interaction between adenosine A2A and dopamine D2 receptors, caffeine can also indirectly increase the levels of dopamine in the brain.