Posted 5/18/2013 10:18 PM (GMT -7)
The only side effect I noticed from starting Synthroid about 3 weeks ago was my heart rate ... my heart rate was up a lot and I was getting these crazy palpatations. Otherwise I felt ok.
However, I'm not entirely sure if it was from the Synthroid or not...from doing some reading online, I might have been causing it myself. I think I may have been eating too soon after taking my medication in the morning and also I was not avoiding caffeine completely.
Since eliminating coffee completely and waiting a bit longer in the morning to eat, I have not had this problem at all now.
So, I'm actually not sure if it was a side effect of switching from levoxyl to synthriod or the changes I made or a combination of both... lol. But, I would definately call your doctor if you keep feeling this way.