Thanks for your post, Rich. I had been taking 2mg of hydroxy B12 plus 2mg of mb12 daily without any apparent problem, except for occasional panic attacks/ hypoglycemic episodes so I have now decided to slow things down and will stick to the basic protocol. Snowathlete, are you sure it wasn't hypoglycemia? Since doing the protocol I have never experienced low potassium symptoms as described elsewhere. At times, however, I have felt over-energised and restless which I think may have pressurised my adrenals causing hypoglycemic / panic attacks kind of reactions, particularly at night. It usually got better after eating something sweet.