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Alcohol is a depressant. That's why it causes drowsiness.
Melatonin
Amphetamine. Causes an increase in wakefulness and focus.
No, quite the opposite. Pseudoephedrine is a stimulant.
causes drowsiness and impairs concentration and alertness.
tse tse fly which is usually found in Africa in the Sharan region
Opiates caused drowsiness as well as relieves pain.
No, it causes accurate results for amphetamines.
Nuvigil or Armodafinil is used to treat excessive sleepiness. It's a controlled substance with possible abuse potential, but it causes wakefulness, not sleepiness as narcotics do.
No contest, alcohol
It is a muscle relaxant that causes drowsiness in 100% of users. So, if you're trying to get stoned, this is NOT the drug to use.
It is a muscle relaxant that causes drowsiness in 100% of users. So, if you're trying to get stoned, this is NOT the drug to use.