| | Conditions & Treatments | Drug Addiction What get rid of marijuana over night? There is no way to get rid of marijuana overnight. The effects of marijuana can last for several hours, and there is no known way to speed up the process of elimination. Drug Addiction - Related Articles Recognition of Alcohol & Substance Abuse About Long-Term Drug Rehabilitation Centers Common Signs of Drug Abuse How to Help an Addicted Gambler How Do You Get Alcohol Out of the Body? Long-Term Effects of Coke Alcoholism Conditions & Symptoms