Les effets euphoriques et autres de la méthamphétamine varient selon la méthode d'ingestion, mais ils sont presque instantanés et peuvent durer 12 heures, voire davantage.
The appearance and euphoric effects vary with the method of administration but they are nearly immediate and can last for 12 hours or even more. Novice users can obtain a high by ingesting only an eighth of a gram of methamphetamine, while a regular user ingests more to get this effect, up to 250 milligrams.