Originally Posted by veggie

Thanks so much for your help. Yes it is confusing. If anything, maybe I better not let the b12 drop lower since I just read:
"lower limit in Japan and some European countries is 500-550 pg/mL and is based on the level which causes mental manifestations such as dementia and memory loss."

Also I am not sure about potassium. Some information says 3.7 is ok and some say that is too low. I am interested in knowing especially when I saw the symptoms:
* Weakness, tiredness, or cramping in arm or leg muscles,
* Tingling or numbness
* Nausea or vomiting
* Abdominal cramping, bloating
* Constipation
* Palpitations (feeling your heart beat irregularly)
* Passing large amounts of urine or feeling very thirsty most of the time
* Fainting due to low blood pressure
* Abnormal psychological behavior: depression, psychosis, delirium, confusion, or hallucinations.

I have had all the symptoms that are bold. It doesn't explain the nightmares though unless that is psychological in nature.