1.   Although MDMA is definitely a stimulant, its somewhat hallucinogenic effects set it apart from other drugs in that family.

2.   Here, dulcet hooks are set against audaciously giddy arrangements to hallucinogenic effect.

3.   The combination of the two drugs suppresses the hallucinogenic effects of ketamine.

4.   The latest U.S.-bound item to appear is khat, a plant popular for its hallucinogenic effects.