I have been on Savella for about 8 months now and aside from the increased sweating, it's worked wonderful. However, about 2 months ago I told my doctor that I was getting some of the symptoms back, so he told me to add a pill at bedtime, so now I take 2 at bedtime and 1 in the morning. Recently, like within the last week or so, I've had increased back pain and I'm just wondering if your body can get used to Savella and stop managing the pain?