I've been seeing more transdermal creams being used. I know of someone who started using it, prescribed by his doc, for blood disorders. I haven't followed up with them to see how well it's working. Dr. Kendall Stewart has quite a few videos on using topical creams as part of restoring the neuro-immune system. He has also formulated them. You can look at his products and videos at http://www.neurobiologix.com/

They're pretty expensive.