Can you make your own Epsom Salt capsules?

I just found Magnesium Citrate in capsule form on Swanson Vitamins'  website.

Is it possible to just put the epsom salt in capsules?  I would gladly fill one hundred capsules to not have to taste that nasty taste again.  I searched on Google and on this website for their availability and have found mention of them, but no real answers as to whether or not you can use them or where they are sold.