Hi all I've been getting bad muscle pains in my legs at night, along with a bad headache and evenbad delirium (very scary waking up after an hour with extreme anxiety and being 'out of it.') this is after starting regular B12 tablets again to treat depression and nerve pain. The headache/panicked feeling only comes a few days after starting regular B12 and always from 8pm - 11pm. My suspicion is that is when my body starts making new blood cells. It is pumping out new cells when my body is winding down for the night, because of the B12' but doesn't have enough potassium to draw from which cause hypokalaemia. After I had my first B12 injection in a long time, I felt really sick and panicked and out of my mind that night. This usually only happens in the evenings. What do you think? I also have general muscle weakness during the day since starting B12 again. I take 5mcg (yes, micrograms, a very small amount, I know) B12 in an iron/ B12 multivitamin every 2 days, along with an injection of 1000mg of hydro B12 once per month. So very low and slow because of start up symptoms. My potassium levels were 4.6 in july 2014 (2 months ago.) this was before any potassium supplementation. I can also give results to a lot of other recent tests too. I've also been craving and subconsciously choosing dinners/food high in potassium, like potatoes, bananas, greek yogurt, nuts, cheese, spinach etc I would like to buy coconut water but it's too expensive... I think this is another indicator of low potassium, the cravings. My description sounds like low potassium, yeah? So... 1. I have potassium chloride salt and it says that on the back of the container that 1/8 of a teaspoon equals 1 gram of potassium chloride. So if I take that amount, would that equal to 1000mg of the potassium I'm needing. If so, I'm thinking about spreading out 3 x 1000mg doses of the salt throughout the day with water. 2. What's the maximum dose of potassium per day you've taken yourself or heard of someone on this forum taking? I know there's no real upper limit to potassium RDA, but I'm really scared of overdosing, especially considering the start up symptoms of B12, ironically probably caused by lack of potassium anyway. 3. If my body reacts this strongly to B12, with the start up symptoms, creating new blood cells rapidly and need for potassium, does that mean I was/am very deficient of B12? Does that mean I am on the right track by taking it even if it throws my body out at first? Thank you everyone!