Nurphen Plus Addiction - Need Help

I am addicted to Nurophen Plus (ibuprofen and codiene). I started taking it for toothache and it was the only thing that worked well. However, it also increased my blood temperature and my heart rate and elevated my mood to a high I have never felt before. I became motivated, inspired and ready to go but my head was still thinking straight..not like I was drugged..I was still alert and it did not affect my judgement or behaviour, it just made me more motivated. But then 2 tablets became ineffective,,then 3,,4 and now I am up to 30+ a day and even then sometimes the high doesn't come (depends on how much I took the day before and how long it has been between doses). I can't financially afford to keep buying this drug. I don't want to die either. I want to feel this happy and motivated without drugs. Another reason I keep taking it, is because I wake feeling 40 years older than I really am. My legs are heavy and sore and I lack the motivation nurphen plus gives me. Please help me.