I'm a 39 y/o male and have been taking levoxyl for over 3 years. Dr. increases the dose about every 8-12 months. I'm on 125mcg now but I may have very mild thyroiditis compared with some of you who have posted. I don't take ANY other drugs (over the counter or narcotic) and I eat very healthy and exercise. Some of these postings are a bit unnerving, so I only post this so others don't get scared that Levoxyl is doing damage.