Hi,

Just started taking dicloxacillin sodium 500 mg four times a day. I'm taking it for folliculitus. Today is the second day and I'm getting pretty severe lower back pain.

Is this a side effect of this medication? I have back pain from a previous injury so at first I thought it was from that but this pain feels different. It feels like cramping or a muscle spasm. Just wondering if it could be from this medication or probably not?

Thanks!
Jessica