The bottom line is it is a drug, it can be highly addictive, and as per the instructions it is not meant to be taken for any kind of extended period of time. If you already have an addictive personality and are aware of that then I would steer completely clear of it.
It’s very easy to end up addicted and once you are and your body becomes physically reliant on it, it’s extremely difficult to get off it. I have a family member who has taken it for years, and every time they try to come off it they have intense cramps/pains and HAVE to take it, they say this pain shows that the need the codeine. No. That discomfort is withdrawal from the codeine, we know that, their GP has told them that and so will no longer prescribe it so they get it elsewhere. I know someone else who got so easily hooked on it after being prescribed it following an injury that when the doctor refused to give anymore, this person went away and GAVE themselves an injury (yes, A&E, required surgery) just to get access to the codeine prescription again. They’d deny they are addicted though🤷🏻♀️. I also have a friend who would claim they aren’t addicted to cocodamol, but they can’t buy it from ANY of our local chemists as they are known to them and so now drive further away to purchase or ask someone to get it for them. But she’s not addicted…only takes it when in pain..course!
Codeine addiction is no joke, you’re looking at symptoms like anxiety, depression, mood swings, potentially financial impact of seeking it elsewhere at the point you can’t get your fix through a doctor, drowsiness, dizziness, fainting, constipation, skin issues like rashes/itching, breathing issues, psychosis, hallucinations, it damages your liver and kidneys among other things and puts you at risk of seizures… not worth the risk.