I've been on thyroid meds for about 20 years but recently was switched to Levoxyl. The only side effects I am experiencing is sweating, both day and night, since before switching to Levoxyl, but it seems to be worsening instead of getting better - which is what my endocrinologist expected. Also I am having difficulty sleeping through the night when that has never really been a problem before. I have an appointment in a couple of weeks and will bring this up to her. I have never really been a sweater so this is very disturbing to me. Also, I was advised to use soy products to alleviate the sweats/hot flashes and have been drinking and using soymilk exclusively for the past 3-4 months trying to get some relief from the rapid change in my body temperature - similar to hot flashes, but not exactly the same. I went through menopause nearly 13 years ago and it seems I'm not quite through it yet - even though I have been symptom free for 13 years.