Police in County Tyrone have seized 1.7kg of mephedrone with an estimated street value of £51,000.
Two men were arrested following the discovery during a house search near Coalisland.
Inspector Gerry McGrath said the "significant" seizure had "taken dangerous drugs off the streets of Cookstown and Dungannon".
In April 2010, mephedrone was banned and reclassified as an illegal Group B drug under the Misuse of Drugs Act.
Prior to that mephedrone was sold in shops as plant food and was seen as a way to get a legal high.
16 November 2010
Dear Drugs-Forum readers: We are a small non-profit that runs one of the most read drug information & addiction help websites in the world. We serve over 4 million readers per month, and have costs like all popular websites: servers, hosting, licenses and software. To protect our independence we do not run ads. We take no government funds. We run on donations which average $25. If everyone reading this would donate $5 then this fund raiser would be done in an hour. If Drugs-Forum is useful to you, take one minute to keep it online another year by donating whatever you can today. Donations are currently not sufficient to pay our bills and keep the site up. Your help is most welcome. Thank you.