depression
"This medication is one of modern medicine's true miracles. I started taking it 7 months ago after a devastating benzo/opiate relapse and I have suffered from MDD and insomnia for 19 years. During that time I have literally tried everything - legal AND illegal. Thank God for this medicine. I did gain a ton of weight at first but consider it a small price to pay for high quality/quantity of sleep, energy, a positive mood, and an all around "good" feeling. 
Everyone reacts to medicine differently, don't give up. I am so thankful to have my sanity and my life back - all thanks to this medicine."