The best replacement for magnesium sulphate is magnesium chloride.

The best alternatives to magnesium sulphate are rated as following:
★★★★★  magnesium chloride
★  epsom salt
★  ichthammol

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Speaking about magnesium sulphate, one probably shouldn't forget about glycerin.

Other search terms related to magnesium sulphate and their ratings are:
★★★★★ glycerin
★★★ eclampsia
You have in mind a companion for magnesium sulphate and it is not yet here? Propose!



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magnesium sulphate
magnesium chloride
epsom salt