Mephedrone can come in the form of capsules, tablets or white powder that users may swallow, snort, inject, smoke or use rectally. When taken orally, users reported they could feel the effects within 15–45 minutes; when snorted, the effects were felt within minutes and peaked within half an hour. The effects last for between two and three hours when taken orally or nasally, but only half an hour if taken intravenously. It is sometimes sold mixed with methylone in a product called bubbles in the UK and also mixed with other cathinones, including ethcathinone, butylone, fluoromethcathinone and methedrone.
