I had the treatment to lower my hyperthyroidism last year and have been on Levothyroxin. My question is I have become worried with the way our country is going that something could happen that I couldn't get the Levothyroxin and since I have to have something in order to live now I would like to stock up as I also stock up on food. I have found that the synthetics only have a shelf of about 2-3 years, if that. But Armour has a shelf life of 17 years. Are the Raw thyroids sold on the internet a possibility for me also and are their shelf life as long? I take 120 mcg levothyroxine. Thanks you,Susan