Stimerex is prolly the most popular ephedra fat burner out there. I personally use it and can say it's the best. It also has a host of other things in it but lets face it ephedra is the main ingrediant. I should also note that it uses sida cordifolia for it's ource of ephedra. The ephedra that comes from this plant has less side effects in terms of jitters and heart racing...not to mention better fat burning. The cheapest place to get it is SNDnutrition.com