From which of the following is Lysergic Acid Diethylamide $(LSD)$ derived?

What is meant by unpleasant withdrawal syndrome?

In which activities other than studies should the energy of boys be utilized?

Match List $I$ with List $II$ :

List $I$	List $II$
$A.$ Cocaine	$I.$ Effective sedative in surgery
$B.$ Heroin	$II.$ Cannabis sativa
$C.$ Morphine	$III.$ Erythroxylum
$D.$ Marijuana	$IV.$ Papaver somniferum

Choose the correct answer from the options given below:

Which of the following drugs increases blood flow to the brain?

Drugs like $LSD$, barbiturates, amphetamines, etc., are used as medicines to help patients with mental illness. However, excessive doses and abusive usage are harmful. Enumerate the major adverse effects of such drugs in humans.