amphetamines
It means the same as sleepiness; the state where you are falling asleep.
Depending on what kind of drugs you're taking- the majority of recreational drugs have a side effect of drowsiness.
Narcosis means a state of drowsiness produced by taking narcotic drugs. Perhaps you are thinking of the narcissus, which was called such because of the youth Narcissus that was in love with himself in mythology.
Antiparkinson drugs attempt to restore the balance through one of several mechanisms, depending on drug type. The most effective drugs, called dopaminergic drugs, replace dopamine, or mimic its action in the brain.
Opiates.
Because - if they're driving, and the drugs cause drowsiness.. the person could crash the car, killing themselves - or someone else !
Antihistamines are sometimes combined with caffeine to counteract the drowsiness that those drugs cause.
It means the drug affects a person in a negative way, such as drowsiness, nausea, dizziness, etc.
Peripheral Vison
Antitussive
Yes fatigue is considered an impairmrnt it affects your driving just as well as alcohol or drugs
they produce altered state of consciousness