Muscle Tightness In Jaw And Knees While Taking Flecainide

I started taking flecainide in Aug after being diagnosed with a-fib. In September I noticed my jaw getting tight and popping while chewing. I had TMJ when I was younger, so I pulled out the mouth piece and wore it for a couple of weeks at night. This seems to help, but I've also noticed pain in my knee as if the muscles seem to not want to straighten out. Sometimes the pain radiates into my feet and toes. Icing helps some but it is very frustrating since I'm on my feet all the time.

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I was taking flecainide along with elequis and ached all over. I stopped the flecainide. However my jaws still ached and the top of my legs still ached including the knee pain. I have gone off the elequis (blood thinner) for short periods and problem goes away. I am looking for another blood thinner. By the way my doctor has not recommended this. He did not seem keen on asprin

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Hello, Janet! How are you?

The FDA does list muscle cramping, aching and stiffness as being among it's reported side effects, which could also explain the flare up of your TMJ.

Have you discussed these issues with your medical provider? There are alternative medications that you can try.

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