Please send this to MS patient you may know. Make sure they see the last slide on Neuro-herxheimer's-like reactions from medications . Patients should work with their doctors and titrate their dosing schedule by starting low dose and also taking a steroid like prednisone or dexmethasone. (Short term)
The medications of which he speaks presumably are worming agents bought over the counter, anti-parasitics etc. I have heard of people getting more help from their local vet than anywhere else. Please view the video for info about brain herxing from medication.