Seeking the name of a movie adapted from a science fiction novel

A novel written by a foreigner. The general content of the novel was:
The scientists developed a drug that could develop intelligence. They tested it on a person with a low IQ (the protagonist). The protagonist gained a high IQ in a short period of time. In a few months, he went from primary school to a doctor. He also made a lot of research results, gave speeches everywhere, and was respected by people.
After a period of time, the effects of the medicine would wane, and the protagonist's intelligence would drop, returning to the state of being laughed at by others.
The whole story reflected the protagonist's rise from decline to prosperity, and then from prosperity to decline, and the changes in human emotions. It was shocking. At that time, the novel was introduced and adapted into a movie, but I can't even remember the name of the novel now. Who has read this novel? Please enlighten me!

Answer 1

A movie adapted from a science fiction novel could be called " Blade Runner 2049."