How about trying Tirosint? It's a new T4 med (out about a year ago) that's a gelcap; has no fillers, dye, etc. Contains only levothyroxine, glycerine, gelatin, water. It's basically hypoallergenic, more readily absorbed, etc...... Tirosint comes in a variety of strengths, including 112, I think........
I've been on it since Aug of last year and doing great with it........
If you can manage to split the 50 into quarters, and take one quarter plus two 50 mcg tablets, that would be close enough. If the tablet doesn't split exactly, don't worry. With a T4 med, it does not have to be exactly the same dose every day.