I take 500g in the morning and 500g at night. Recently I have been having a tingling sensation starting with my tongue then my right hand an it goes up my arm and the right side of my face and then i start to fell unstable and have to sit down. It usually lasts in total a couple of minutes. I wondered if i should take a higher dose of medication and also it seems to be happen late afternoon around 6pm always around the same time and only once. this has been going on now for a couple of weeks every other day or two days, Anyone had the same experience?