Levoxyl Side Effects: I have been taking Levoxyl for approx. 5 years following having a http://www.medications.com/effect/view/40528 I have been taking Levoxyl for approx. 5 years following having a total ablation of my thyroid due to follicular thyroid cancer. I am constantly tired, have joint pain, trouble sleeping and continue to experience weight gain. The doctor continues to tell m You did not say whether your doctor was monitoring your thyroid h Tue, 28 Jul 2009 10:40:55 -0400 http://www.medications.com/effect/view/40528?item=21859 You did not say whether your doctor was monitoring your thyroid hormone levels. Your doctor should be checking your T-4 and TSH levels to insure they are where they should be. It sounds like you may still be hypothyroid. Those symptoms were the similar http://www.medications.com/effect/view/40528?item=21859