Caffeine,cocaine and amphetamine are

In people addicted to alcohol,the liver gets damaged because it

Which of the following drugs is used to suppress cough?

Identify the plant shown in the figure and its characteristic property.

What are caffeine,amphetamine,and cocaine?

Nayan's friend is consuming drugs. What should Nayan do?
$(i)$ Discuss with the friend's parents. $(ii)$ Bring the matter to the attention of the friend's teacher. $(iii)$ Advise him to stay away from alcohol and drugs. $(iv)$ Try to understand why he is consuming drugs and show empathy. $(v)$ Inform him about the physical harm caused by addiction. $(vi)$ Provide proper guidance and help him stay away from addiction.