How does the excretory system remove drugs?

Answer:
Drugs are metabolised by the liver and are broken down into water soluble products - these can sometimes be highly harmful, which are later removed by kidneys. This process of converting fat-soluble drugs into water soluble metabolites that can be excreted by the kidney is carried out in the liver. The kidney is the most important organ involved in the elimination of drugs and their metabolites. Removal by kidneys is just like removal of other wastes through nephron and glomerular filteration.
Possible ways of excretion include:
•Breath for gaseous wastes
•Urine for most metabolites
•Saliva
•Perspiration
•Faeces
•Milk
•Bile
•Hair
First answer by ID1156473354. Last edit by Muhammadafzal. Contributor trust: 344 [recommend contributor recommended]. Question popularity: 154 [recommend question].