Many medications have been tried in research studies, including cortisteroids and medications such as mestinon, amantadine,
provigil (
modafinil), IVIG, and others. None of these have shown a definitive benefit though research is ongoing, and some medications such as IVIG may show promise. Researchers are also investigating nerve growth factors, to stimulate regrowh of nerves. This is at the very preliminary research stages at this point.