In a recent discussion I mentioned that I'd previously been using 2500mcg of sublingual methylcobalamin garden of life spray per day albeit in divided doses.
It was suggested that this was too much by a commentator which now has me somewhat confused as others mention taking far higher doses.
I did that for around 8 weeks after a serum reading of 153pg/ml and just took a break of one week and then tested at 902pg/ml.
I know the last test is fairly irrelevant due to only having one week off but it was part of a suite of tests done privately.
So my question is (and I know there isn't technically an upper limit), how much is too much for dose/frequency.