@DkJoe2 Since it is dissolved in DMSO, it will have 100% bioavailability when applied topically. Furthermore, DMSO will carry the magnesium directly into the cells, without the need for a magnesium ion transporter, increasing absorption furthermore.

If oral magnesium bicarbonate works for you, I don't think there is much difference; magnesium bicarb has an oral bioavailability of 50% whereas this product has a 100% bioavailability; 50% bioavailability is pretty good as well. I personally don't use magnesium, but I have brewed this product, and it really easily dissolved and it fully absorbed when applied topically.

Read more about Magnoil here:
https://idealabs.ecwid.com/Magnoil-p104372479