<human>: Condense the text into a few key points

Sorry if this is formatted badly. I'm on mobile and this is my first post.

So I suffer from severe asthma and have been on medication my entire life for it. A number of months ago my doctor prescribed a medication called zyflo. After taking this medication regularly I noted that my joints were very painful and decided to inform my doctor the next time I saw her. She then informs me she has never heard of anyone having those side effects and asked if i wasn't sure that it couldn't be anything else. I agreed that maybe it was something else unrelated and decided to continue taking the medication. After awhile the pain was unbearable. I work in a retail setting and am on my feet 90% of my day. My knees would swell and be painful to the touch. On a hunch I ceased taking the medication. It improved the joint pain slightly but not a significant extent but anything helped at this point. Once going in for another check up my doctor is upset to find that I had stopped taking the medication and asked that I start again immediately. I complain again about the joint pain and she disregards it as an unrelated matter and that if I thought the pills helped at all I should begin using them again immediately. Trusting my doctor I did exactly that. Only to be in so much pain that I cannot sleep. So now sure that the pills play some part I went to the drugs website to make sure this was not one of its side effects and sure enough, it is. Furthermore the website states that should these side effects persist to stop taking the medication and consult a medical professional immediately. My knees have not been the same since beginning this medication. Do I have reasonable grounds for malpractice or should I just start looking for a new specialist?
<bot>: doctor prescribes new med, I suffer complications, get ignored, complications get worse, find out is a known side effect that may have now caused permanent danage to my joints. Malpractice or shitty doc?