I have been taking Armour thyroid (3 pills of 15 mgs each per day) for about 4 years. It seemed to be working fine. This month I started getting a burning feeling in my throat and esophagus and upper stomach. I smelled the bottle of pills and it had a very bad chemical smell to it, so I stopped taking them. I went to another pharmacy and got a new prescription of Armour thyroid. It seemed fine for the first 2-3 days and then I again got this burning in my throat, esophagus and stomach. When I smelled this second prescription bottle, it now too had this strong chemical odor. I contacted Forest Labs, the manufacturer, and they denied knowing about any such problems. But they lied to me, saying they called the two pharmacies and couldn't get the lot numbers from the pharmacies and so couldn't check up on the lots that I got. I reported this to the FDA. They called the pharmacies and were able to get the lot numbers without any problem. I am considering a lawsuit against Forest, since I am still having this painful burning and it has been about 2-3 weeks since the problem first started and I stopped all Armour thyroid after the second prescription was bad, too. The FDA found out that, in fact, both prescriptions came from the same lot! Their impression was that maybe Forest got these pills from outside the country and they are contaminated! Especially likely since Forest has been having production problems with the 15 mg size. Please let me know if you have had a similar problem or know of any similar lawsuits against Forest. Thank you.