Roxicodone is a pill that is a combination of oxycodone hydrochloride, which makes it a an opiate and highly addictive for many who use it. If abused, it's as dangerous for you as heroin, regardless of how you use it. All opiates have the same effects if they are abused:
Immediately seek medical attention if you experience any of these serious side effects of Roxicodone including mental/mood changes (such as agitation, confusion, hallucinations), severe stomach/abdominal pain, or difficulty urinating.
More taken over time: Usually a major sign of addiction is that you begin to use more and more of the drug over time. First, you only use when you're at a party with your friends. Then it's a couple times a month, and soon it's most weekends. Finally, it's a couple times a week and it will ultimately become everyday. That is almost always a clear sign of addiction.
Craving: When you don't use, you begin to crave the substance. Cravings become like a hunger, you can wait until your next hit. You begin to change your behavior, often in subtle ways so that you can use sooner. Cutting class so you can get home to “relax”. Having a pill right when you get home from work so that you can “calm down”. Taking a Roxi to “get through a tough day”. You're craving the drug, which is certainly a key sign of addiction.
Tolerance: You need more and more of the drug to get the same effect. An obvious example of this is drinking alcohol. You used to have two drinks and feel tipsy, but now you can drink five drinks and not feel anything. Your brain chemistry adapts to your usage and using becomes “normal” so your brain takes longer to feel “high”.
Withdrawal: When you do use, you begin to feel sick or start to get the shakes. Pain can also be a symptom of opiate withdrawal. “I'm in so much pain, I NEED some Roxi to get out of pain”. Withdrawal avoidance is a very common reason that people stay addicted to drugs.
Use regardless of negative consequences: You're on probation for using heroin and you'll be drug tested by your PO tomorrow, but you use anyway. Even though you know the very negative consequences you can't stop yourself from using. That's addiction!