Where to catch, #0096
Drowzee in Crystal: 4 places, levels 12 to 14
4 encounters by area
Places
Route 11, Route 34, Route 35 and 1 more
Other games
Also found in 12 other games
Red and Green (Japan)Red and BlueYellowGold and SilverFireRed and LeafGreenDiamond and PearlPlatinumHeartGold and SoulSilverX and YSun and MoonUltra Sun and Ultra MoonLet's Go, Pikachu and Eevee