I feel for you. I am not qualified to tell you what you should take to replace the adderall, but you need to immediately consult your doctor about this. 80 mg a day is quite a high dose for a 16 year old, and is extremely dangerous to your health, particularly your heart and nervous system. I was addicted to adderall for a year and I went from taking 10 mg a day to 100mg to satisfy my need for the drug. I also became depressed, anorexic, and developed serious anxiety. I know it feels amazing, but trust me, that wears off eventually and you just feel wired. I actually noticed that after 6 months of taking the drug I became counter-productive and my obsessive behavior increased. Like, I said I am not a professional but someone who really does have add or adhd has a chemical imbalance that adderall is supposed to even out. Therefore, you should not be feeling "high" as you said if you are taking your dosage, you should just feel normal and calm and focused. Please see your doctor and try another med, perhapd strattera. Good luck!