The Simpsons (1989– )
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Brother's Little Helper 

Bart is put on medication to control his behavior, but the pills cause him to become paranoid and insane.



(created by), (developed by) | 3 more credits »

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Episode credited cast:
Marge Simpson (voice)
Lisa Simpson (voice)
Edna Krabappel (voice)
Pharmacist #2 (voice)
Milhouse Van Houten / Rod Flanders / Jimbo Jones (voice)
Maude Flanders #1 / Showgirl (voice)
Martin Prince / Sherri (voice)
Karl Wiedergott ...
Stage Manager (voice)
Marcia Mitzman Gaven ...
Maude Flanders #2 (voice)
Rest of cast listed alphabetically:
Mark McGwire ...
Himself (voice)


After yet another prank from Bart, involving flooding the gym, principal Skinner talks to Homer and Marge and advices them to make Bart take a new behavior drug, called Focusyn. At first Bart doesn't want to take the drug, but pretty soon he doesn't mind and it actually seems to work: Bart stops playing pranks, actually pays attention in class and reads in his spare time. Good times don't last and Bart starts behaving very strange and paranoid. Written by Marco van Hoof <>

Plot Summary | Add Synopsis


Animation | Comedy


TV-PG | See all certifications »

Parents Guide:





Release Date:

3 October 1999 (USA)  »

Filming Locations:

Company Credits

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Technical Specs


Sound Mix:

| (seasons 3-19)


Aspect Ratio:

1.33 : 1
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Did You Know?


At the very end Bart sings about his drugs using the Popeye theme tune. Nancy Cartwright who voices Bart, was also the voice of Woody on Popeye and Son. See more »


Bart asks the family to close the door to his room. You hear the door slam shut, but in the following shot, the door is wide open. See more »


Principal Skinner: I'm afraid I'll have to expel your son
Marge Simpson: [gasps]
Principal Skinner: Unless you're willing to try a radical, untested, potentially dangerous...
Homer Simpson: Candy bar?
Principal Skinner: No. It's a new drug called Focusyn.
Marge Simpson: A drug? I know Bart can be rambunctious, but he's not some hyperactive monster.
[Bart appears outside the window, dressed as a cheerleader]
Bart Simpson: Gimme an F! Gimme an art!
Principal Skinner: Good Lord! He's gotten into the pep closet!
Homer Simpson: I'd say he's coming out of the pep closet.
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Featured in Bigger Stronger Faster* (2008) See more »


Don't stop
Written by Christine McVie
Sung by Nancy Cartwright
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User Reviews

The simpsons episode I laugh the most at
17 September 2017 | by See all my reviews

Is this The Simpsons most creative episode? No. Is it the shows most well written episode? Certainly not. The plots not really complex. It's an episode pretty much where Bart takes medication drugs, gets super smart, then becomes out of control. Sounds rather simple, doesn't it?

However where this episode does display off its radiant charm is through it being absolutely hilarious. In fact, it may be my opinion alone, but to me it's one of the show funniest.

It has so many memorable humorous lines such as:

-"Bart: Thanks for coming out here mom.

Marge: No, thank you for stopping the tank!

Bart: It ran out of gas!"

-"Homer: My god is she brave. Standing up to that freaked out.


Lisa: Dad, that junkie is your son!

Homer: Why don't you just tell everybody!"

Along with so many others. So even though I know there are many better made Simpsons episodes, I still just genuinely love this one.

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