Levoxyl and fillers

I have been on levothyroxine 75 for two months so far. I started off at 25 then up to 50 and now currently on 75. I have horrible lower back pain along with my knees aching too. It's all the time and Advil or aleve do nothing to relieve the pain. I am miserable and hate living like this. Doing some reading here and other sites I've read that this can be due to the med and some thing about the fillers in it. When I first started the the 75 that my doctor game me from samples at his office that were the name brand all was good. Now that I have been on the generic from my pharmacy I'm in pain. Am I off base here and does any one have similar issue's? I'm calling my endo when the office opens today to see him. Thanks for any info.

I was prescribed 25 MCG tabs of levothyroxine (generic for Levoxyl) by my MD for my hypothyroid. (I was tested at a 4.5 reading -- just below a normal 5 reading). After 60 days of taking levothyroxine EXACTLY as prescribed (i.e.; on an empty stomach, 1st thing in the morning with a glass of water; no vitamins for at least 4 hrs afterward), I started to have symptoms that I've never experienced before: my hands began hurting so bad with joint pain; my lips felt numb; and I was sweating more than I ever had in my life. I decided to stop taking the medication due to these symptoms, and in about 7-10 days from stopping, ALL these symptoms had disappeared and have not returned to date. I relayed this information to my MD who told me that my symptoms had nothing to do with Levothyroxine and that I needed to continue taking the drug. It's more than strange to me how some MDs will not listen to his/her patient -- even more so now that I've read other info on the internet where many other people have had these same side effects taking levothyroxine!! On my own, I am now looking into taking an all natural alternative that I found on wellness resources called "Thyroid helper". I will not take Levothyroxine again if I can avoid it by taking an alternative. Has anyone else out there had success taking "Thyroid Helper"?