I only take it when I get my MRI's done and that's usually in the day.

But, I would recommend that you talk to your dr as there may be something else that is more appropriate for you and your situation. This may or may not include medications and/or counseling. Additionally, this may be related to the MS, possibly a new lesion or an old one becoming active, depending on the location.

I do hope you start to feel better soon.