Doraemon (1979)

Season 1: Episode 104

Nobita is slow so Doraemon produces fast and slow pills, so he can speed up. Nobita does not want to try them so Doraemon has a few speed pills and rushes everywhere fast, then ready to slow back to normal, he takes what he thinks are slow pills but are more speed pills and rushes everywhere like a speed demon. Then Nobita accidentally takes slow pills and becomes even slower and his parents try some fast pills, thinking they are sweets.