Wow Neutral to slightly acidic, you are desperate ,but only a neophyte would refer to Epsom Salts an acid. I also prefer my reliable sources which clearly states that mag sulfate is neutral in solution compared to your questionable and usually incorrect sources .
Tell me this HV does the pharmaceutical industry have a patent on Epsom Salts , this without a doubt is the main qualifier to being defined as a pharmaceutical drug.
Claiming Epsom Salts are a pharmaceutical drug proves to everyone how far out in left field your opinions can be.
I personally would hesitate to take advice from anyone who makes such an uninformed and bizarre claim.