Which treatment would you recommend in multiple sclerosis (suggestions by our neurologist: gylenia, tysabri (natalizumab) or fumaric acid - first treatment!)?

None of those: The drugs that i would recommend as a first treatment would either be Rebif or copaxone (glatiramer). These are shots, but they have many years over these meds you mentioned, the are safer than the meds you mentioned and they are likely just as affective. I have been on Rebif for 10 years.

New paradigm: We now have multiple treatment choices, and this flexibility allows us to achieve far better outcomes. We are obtaining baseline anti-jcv antibodies. If positive, we will likely start with gilenya, if negative, tysabri (natalizumab). When bg-12 comes, may use as a first line item. Drugs such as avonex, rebith, copaxone, likely will be employed later, after the first 5 yrs. I agree with your physician.