painkillers
B
Drug tolerant
The effects of dopamine on the brain can be mimicked by the drug levodopa: levodopa therapy is the mainstay of PD treatment in its early stages.
Heroine
In order for a drug to have an effect on someone, it must first be taken into that person's body and bloodstream so that it can then interact with that persons' brain.
That when the drug goes in the body, the nervous system detected so it takes it and send some things to the brain.
John D. Michenfelder has written: 'Anesthesia and the brain' -- subject(s): Anesthetics, Brain, Drug effects, Effect of drugs on, Pharmacology, Physiological effect
the effect on drug addiction is alot of things.. first you could die from it! so dont do it!.. second it could shut down your liver hear and lungs! and third it could cause brain damage
first of all its not a illegal drug. alcohol is bad for your body and can effect your brain and cause brain loss and most off the people still drink this and It kills bacteria, used as a fuel etc
It is the time it takes a drug to have its intended effect, which may depend on the body changing the drug into something effective or just the time it takes for the body to have an effective amount of the drug. Some drugs take hours, others days or weeks to start working.
Nicotine is an extremely addictive drug. When smoking, nicotine enters the bloodstream and goes straight to the brain. The brain is the body system that nicotine effects
Tolerance builds up to a drug, even when the medication is kept at the same dosage over time.