Doraemon AP
 

Doraemon gives Nobita some gadget (makes age potions) that can make him older, so he uses it and then decides to give his girlfriend Shizuka(?) a dose.

Pic 1: Shizuka drinks AP potion Pic 2: She realizes that she has grown up

Any idea what episode this is from?

The AP episode
 

Here is where I found it:

http://www.youtube.com/watch?v=HLxTal4Nbus

Doraemon Episode 344?

Hope this helped.

Cute. Notice how some variation on the Marvelous Melmo Blue/Red stuff keeps getting into these AR/AP animes. This time it's a drink not a pill. Another non-female-AR episode of Doraemon used a red and blue magic blanket.

Nice AP/AR.