I take Panzyga for my IVIG. I have gotten by balance back. I can finally sign my name again and my tremors are not as bad from the motor neuropathy (which is one of my many neuropathies that I have). Mine is autoimmune caused by my lupus, Sojourns, and mixed connective tissue disease. It has really helped me a lot. Initially the first infusion is for five days it is called the loading dose. Mine takes7-8 hours. I get it every three weeks for three days. It took about six months to start working. IVIG does not worth for idiopathic neuropathy only autoimmune neuropathy. If you read up on what the neurologist recommended most are for CIDP and motor neuropathy. I recommend you get a port. It is a lot easier than constantly getting stuck for an IV. This causes my body to hurt all over. Read up on octogam