- Why did everyone start to hate the Russians if the U.S. did the same thing in Afghanistan, Iraq?
- What needs to be corrected in the management of Russia first?
- Why did Blaise Pascal become a religious man at the end of his life?
- How do I know if a guy likes you?
- When they say "one generation", how many do they mean?
In the manufacture of fertilizers, there are much lower requirements for the degree of purity than in the manufacture of medicines. In your fertilizer package, magnesium sulfate will be 98-99% at best, and the remaining 1-2% is completely unpredictable, and can even be toxic.
But even if you are lucky and the fertilizer is safe, not only the composition is important for the medicine, but also the dosage and absorption rate. Getting into the right parameters using fertilizer is almost impossible.
Hypothetically, there may be something there, but this is unlikely, since magnesium sulfate for fertilizers and medicines is obtained from seawater in the same way of sequential crystallization, so the impurities will include components of seawater: sodium salt, calcium sulfate, potassium and other salts, all of which are harmless, as well as seawater in small quantities. If you really need it, and the road to the pharmacy is flooded , you can take a chance.