Yes, I Was Given Meclizine And Ondanestron In The Er

Yes, I was given meclizine and ondanestron in the er for my first ever vertigo attack. That was on Mar 10. I haven't had any more of these meds since Mar 13. However, I'm still experiencing intermittent headaches and some minor dizziness and blurred vision. Shouldn't these meds have been flushed out of my system by now? Is there something I can take to counteract these meds after effects?