Powdered magnesium / calmg?

Is magnesium sulphate and Epsom salt same?

Epsom Salt: Benefits, Uses, and Side Effects

Epsom salt is also known as magnesium sulfate. It’s a chemical compound made up of magnesium, sulfur, and oxygen. Despite its name, Epsom salt is a completely different compound than table salt. It was most likely termed “salt” because of its chemical structure.

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Yea, same thing.