Sme say its a combo of pig, cow and a few other animals, LOL. 3) It is too hard to fine tune the dose because it comes in grains
vs mcgs, so
synthroid is easier to prescribe. From what I read here on the message boards, I don't see any proof that synthroid, or generic levoxthyroxine is any better at regulating thyroid problems. Seems pretty touchy either way you go.....but as you know, it's just an opinion that is typically disputed according to your own experience.