Medications and therapies used to treat Lambert-Eaton myasthenic syndrome may include anticholinesterase agents (e. g. , Pyridostigmine), guanidine hydrochloride, plasmapheresis (where blood plasma is removed and replaced with fluid, protein, or donated plasma) or IV immunoglobulins, steroids (e. g. , prednisone), azathioprine or cyclosporine, and/or 3,4-diaminopyridine. 3,4-diaminopyridine is available in Europe and may be available in the U. S. on a compassionate use basis. While there has been some evidence that either 3,4-diaminopyridine or IV immunoglobulin can improve muscle strength and nerve to muscle cell communication, the degree of benefit (i. e. , how much symptoms are improved) still needs to be determined. 
What are the treatments for Lambert Eaton myasthenic syndrome ?