Adderall and loss of appetite

I am 21 years old and my doctor prescribed me 20mg of Adderall to take twice a day. I've been taking it for about a week (only in the morning, I'm still too wound up to take it 4 hours later!) and I have already lost 10lbs. Also I've been having trouble breathing deeply, chest pain, tingling in my arms and legs, and no appetite whatsoever. Are these symptoms normal?

I start taking Adderall, xr about 9 months ago. At first I had the expected side effects, dry month, restlesness, loss of appetite. I felt extremely alert, and much more focused at work. My husband even noticed my attitude was much more calm and relaxed, which made him much more calm and relaxed. So it seemed like it was a miracle drug. Well, here lately I have been feeling more tired and unmotivated than I ever have in my entire life. I have been taking 10 mg since I began, and usually only once a day for only the days I work. I never take it on my days off. So I am not sure if that is the problem. And I am not sure if it is because I need up my mg, but honestly, I feel that it is not worth it in the long run. I am beginning to think my body is reacting because I need more, and I refuse to do that. So my results are worse than when I started 9 months ago. I have decided to stop cold turkey and very concerned about withdrawl effects. But I would rather go through that than the rest of my life be dependant on a medication that is obviously messing with my body.

Just diagnosed with ADD (without hyperactivity) and I am a 42 yr old male, married (8 yrs) with a 2 yr old daughter. Past problems and behavior fell under the "classic" AAD category and have been struggling to be functional my entire life. Just started taking Adderal 15 Mmg (twice daily) and the have experienced the following: DAY 1- fast HR, dry mouth, heighten hearing, sensitivity to touch (sexual), slight euphoric feelings and was not able to sleep that night. Day 2 - much better except for cotton mouth taste (Smoothies!) and loss of appetite - slept fine, not as intense. Day 3 - feeling pretty normal except much more focused and clear. Mind does not flit from thought to thought. It seems to place you "in the moment". I am not too interested in taking this long-term, but something was needed as I was in a downward spiral and headed for doom. I am 5'11'' and 190 lbs. I train as a triathlete and am quite able to workout and function with this medication so far. I have never taken a been addicted to anything or have taken Med's before so this is all new. If it's for your, child take precautions that this is the right path. If it were my daughter, I would certainly try all the alternatives I could before medicating, but speaking from experience - I know that this is something that has to be managed and confronted as ADD is a very real thing and not something that they will "grow out of". Most of all, give them your love and patience.