Wow, I am so glad to find this site. I have been taking Levothyroxine for probably 3-4 months. At first, I felt great. Now, I have numbness and tinging in my left arm and what I believe to be carpal tunnel (developed in just the past week). I feel depressed, can't stop crying, and I ache like I'm 90 years old - I'm just 25! I have been so scared. I have a Dr. appt. later this week, now I am thinking I need to go off this med. I only have slight hypo, so it's not worth it to be on this stuff! I'm so glad it's not just me.