I smoked weed about four days ago and i only took one big hit but i am still high today how can i get rid of this?

Marijuana naive?: If you've never tried marijuana before, you might still be noticing some effects. It's not common, but you might still have enough in your system to affect you. An alternative consideration is that it wasn't just marijuana you smoked. Some have been known to add PCP or formaldehyde. If this doesn't clear pretty quickly (like tomorrow), go speak with your doctor. In the meantime, fluids and Vit C.