This maybe just me, but have you ever noticed that the more advanced your MS is, when you question him, or ask about other types of treatments such as LDN, BEE VENOM, the less your doctor seems to care. He/She will say things like that don't work or it's a hoax. It's even more noticable when you are having bad side effects from the CRAB drugs and complaining about it or you told them you stopped taking them. There line is "give them more time and take Tylenol".
The clincher is when he/she walks out of the room or says I have another patient.