what is this drug?

[talbert06]

I found this pill in my sons room and I'm not exactly sure what it is.
It is white and it can be broken into 4 pieces, it has an "a" on it, and it has "594" on it also. Can someone tell me what kind of pill this is and what it does?

[talbert06]

And its round

[idqueen]

The pill you have found is ZANAFLEX (Tizanidine HCl) Tab 4 MG
Mfg / Labeler ELAN PHARMACEUTICALS
Imprint Code A 594
Color white
Shape round
Score double-scored

You will find an image of this pill at the very bottom of the PDR page for Zanaflex at Drugs.com
http://www.drugs.com/cdi/zanaflex.html

Zanaflex (tizanidine) is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain.
Tizanidine is used to treat increased muscle tone associated with spasticity.
You will find more info at
http://zanaflex.drugs.com