I was diagnosed with adductor spasmodic dysphonia in 2004. I received my first Botox injection in 2006 from the NIH in Bethesda, Md. as part of their clinical studies. I received injections until 2009 when I was told I had developed antibodies to the Botox and it was no longer working. A few months later in 2009, my doctor in Orlando, Florida started using Myobloc and it worked beautifully. I have started having less and less results the last 4 months and after my injection yesterday, it is not working at all. What is available besides these 2 medicines to relieve the spasms? Are there any other medicines available to give me a good voice??