It depends on what type of drugs you are talking about, and many cause deadly symptoms. Even ibuprofen can be deadly if you overdose or if you do not use as intended. Alcohol is also a drug, and it stimulates your body. Tobacco is a drug also and it damages your lungs. If might feel good to be taking drugs, but you will have to suffer the consequences later. Some results of drugs are permanent brain damage, organ damage, weakened immune system, and even death, to name a few.