I'm awaiting electrolyte test results and suspect I may have become deficient in magnesium and/or potassium. If so, I intend to get them back to normal levels before starting up Freddd's b12 protocol again (and at lower doses!). When I started the protocol back in June, I introduced ab12 first and immediately had more energy, for the whole week before I started mb12 (when I got start-up symptoms and Mg/K deficiency symptoms). Am I right in thinking that it's only mb12 that increases the need for potassium (and indirectly, for magnesium)? I'm wondering whether to supplement with ab12 only, until my electrolytes are normal again (if that's the problem).