Best ingredients for a fat burner

[hannes joubert]

Hey guys, I normally post in the Andropause section, but this might be better placed here.

ITO a fat burner, what ingredients should I look for?

I have seen these with the following in:

1) Ephedrine, Caffiene, Aspirin
2) Clenbuterol Hydrochloride, Ephedrine, Caffiene
3) Ephedra, Caffiene, White Willow Bark, Nicotinic Acid,Pyridoxine
4) Salbutermol Sulphate 4mg, Ephadra Alkaloids 35mg, Caffeine 100mg, White Willow Bark 75mg, Garenia Cambogia 75mg, Synepherine 20mg

Any opinions and advice would be appreciated.

Thanks

Hannes