What is this drug and what are it's effects on the body?

Do you mean hydrocodone?

Hydrocodone Information from Drugs.com (http://www.drugs.com/hydrocodone.html)

What is this drug and what are it's effects on the body?

The indicated dosage is (generic, tab) 10 = hydrocodone 325 = acetaminophen.

While the acetaminophen is non-narcotic it can adversely effect your liver after 1) long term use, or 2) overdose, or 3) if you drink alcohol while taking the drug, or 4) have a history of alcoholism or liver disease.

In addition to Judy's link let me add:

Acetaminophen Information from Drugs.com (http://www.drugs.com/acetaminophen.html)

That should cover it.