Low dose naltrexone has the the fewest or no fuse effects . I asked my rheum for It . The rheum DX me with fibro .

Truly I go and have been to so many different doctors trying to find out what is going on with my body.so if you go to your doctor and other doctors and your test and your blood work keep coming back negative you may have fibermyalgia something to look into and if you do your doctor will recommend the best medication for you, good luck and I pray you find out what it is that you have.