How many epsom salt?

Hi!

I just bought in drugstore Epsom Salt (which woman in drugstore call bitter salt - so i hope that's it) packed in a small 30 g (gram) bag.

So is 30 g Epsom Salt enough to do dr. Clark Liver Flush protocol?
I can't figure how many is 4 tablespoon (1/4 cup) in grams ..
since i'm from europe.

thnxs