Bewitched - Season 8 - Eps 25: Samantha's Witchcraft Blows a Fuse
Sam and Darrin have dinner at a chinese restaurant and Sam orders a drink called ""The Heavenly Himalayan"" which causes her to lose her powers and to break out with stripes on her face! Dr. Bombay tells her about an antidote and Sam gets it from an Apothecary, only to break out with more stripes on her face. Dr. Bombay then tells her that she needs a feather from a Dodo bird, but then that doesn't work either. There is another important ingredient needed: a piece of Himalayan cinnamon stick from the Chinese restaurant. After Darrin gets in trouble for getting the cinnamon, he gets it for Samantha and she is cured again.
About Bewitched

Title: Bewitched
First Air Date: 1964-09-17
Last Air Date: 1972-03-25
Status: Ended
Rating: 7.861/10 (from 695 votes)
Language: EN
Seasons: 8
Total Episodes: 254
Network: ABC
Genres: Sci-Fi & Fantasy, Comedy, Family, Drama
Production Companies: Columbia Pictures Television, Screen Gems
Synopsis
Samantha Stephens is a seemingly normal suburban housewife who also happens to be a genuine witch, with all the requisite magical powers. Her husband Darrin insists that Samantha keep her witchcraft under wraps, but situations invariably require her to indulge her powers while keeping her bothersome mother Endora at bay.
Cast

Elizabeth Montgomery
Samantha Stephens

Dick Sargent
Darrin Stephens

Agnes Moorehead
Endora

David White
Larry Tate