Andreas Moritz
Dear Simona,
Although not ideal, you may use cold pressed sunflower oil instead. It would be best, though if you used Epsom salts if you can. Otherwise, Colosan, oxy-powder or other magnesium sulfate may be used. They have major disadvantages over Epsom salts, so I usually don't recommend to replace them with something else.
To do the liver cleanse as effectively as possible, while avoiding complications, I suggest you use all the directions provided in The Amazing Liver Cleanse, www.1stbooks.com (it's electronic version can be downloaded). If you don't have it already.
There is a lot else you can do to deal with the other causes of leaky gut. For this I recommend The Key to Health and Rejuvenation, also www.1stbooks.com.
With my best wishes for you and your beautiful country (I spent a lot of time there).
Ciaou,
Andreas