Can you become addicted to a controlled substance the first time you use it?

Possibly yes, but I don't think you are addicted.

Addiction is the point at which you no longer have control over your will to use a drug. If it's around,you will take it. You will find a reason to take it. Whether it's a legitimate reason or an excuse is not as important as the fact that you like how it feels. That's alone predisposes you to addiction, but if you can have a bottle in the house without thinking about it, and deciding whether to take it is not a matter of excitement or disappointment, then you are not addicted.

However It is truly a slippery slope, and you have already taken the first step simply by enjoying the experience. I would recommend never taking opiates again unless given to you by a doctor in a hospital. If you ever need a prescription, be honest with yourself about how you feel about taking opiates. If you think you will really like taking it every day and will become dependent then you would be better off finding an alternative.

you can easily get addicting to the feeling of euphoria, especially if there's a family history involved. Think about it as if addiction level is measured in a glass, and everyone's is different. For example, a guy tries alcohol for the first time and immediately gets addicted to it, that is because turns out he has a family history on alcoholism so the glass only needed a little more to get full. On the other hand, another guy drinks and drinks and drinks and doesn't get addicted to it, this is because the glass (idk much about the biology of addictions, but i think it has something to do with brain receptors) was empty to begin with and takes a long time to fill it up. However, this guy is filling the glass halfway full for his future children because he is increasing the tolerance of it for them

This happens the same way with other drugs and substances, my abnormal psychology teacher used this as an example and I thought it was interesting and clear.

I hope I helped you understand

Well its not that the 'addiction' sets in after the first time. Its more of a gateway...because it does make you feel better and now you know it. If you continue to take it and take it, you will find yourself building a tolerance to it and needing more to relieve pain and then eventually always being in pain without it and thats when you become addicted. I only take meds like that when my pain is absolutly unbearable so that way I know I'm not finding an excuse to take it and get myself addicted because it happens. I use the meds as a last resort kind of thing...I try 800mg of IBprophen first with heating pads. Most of the time I dont need the strong stuff.

You're hooked for life.