Is glauber salt the same as epsom salt?

No, Glauber's salt and Epsom salt are not the same. Glauber's salt, also known as sodium sulfate, is a compound with the chemical formula Na2SO4. Epsom salt, on the other hand, is magnesium sulfate heptahydrate with the chemical formula MgSO4·7H2O. While both are salts, they have different chemical compositions and properties.