First off Roxi, Roxycontin, Roxicodone does not even exist. That's right!
Ask any legit pharmacy if they carry Roxie's. LOL!!! This is simply a street name for generic oxycodone. Never, ever, ever, ever will you see any prescription bottle say "Roxi".
Second of all, Numerous companies make a generic extended or delayed release oxycodone(including some of the manufacturer's listed above). However after the creator of Oxycontin (Purdue pharmacies) refined there makeup of the original Oxycontin (from OC to OP) to be "abuse resistant" the most desirable form of the drug became generic oxycodone (or Roxy's).
The only reason the 30mg dose is so popular is that it is the largest quantity of available oxy available in the instant release format. This is not to say that the same companies that make "Roxies" don't make 60mg or 80mg oxycodone, it is just in an extended release form.
This being said....if you have to question the consistency or integrity of the pill you purchased I would consider another provider.
TAKE AS NEEDED FOR PAIN...