I put in a repeat prescription for my T3 with my doctor and when I went to collect it from the Pharmacy they did not have any because they said the manufacturer was not producing it at the moment. As we know this is a common problem with Mercury. However she said they had ordered it from another manufacturer and I should have queried it at the time because I thought Mercury was the only manufacturer in this country. However, my partner collected my tablets today and they are Thybon 20 Henning by Sanofi, from Germany. I have never had these before and up until now have never been offered them as an alternative when my usual Liothyronine has not been available. Does anyone know what the story is, why am I now being offered this alternative? And does anyone know if they are exactly the same?