with 99 on one side and 33 on the other.
Could the imprint possibly read 93 33?
Yes thats what it is.
This pill is Teva's generic version of OxyContin 80
Each pill contains Oxycodone HCl Extended-Release 80 mg
Imprint Code: 93/33
Description: Oval, Green tablet
You will find an image at tevapharmusa.com
Info at http://oxycodone.drugs.com and https://www.drugs.com/cons/Oxycodone.html