I believe that now they say 200 is max? and 150 is better? I think we've been recommending 150 here for awhile now, though I did 200 and would have been way too lazy to split a pill!
Let me look and see.....
OK-- "And when taking [B6] supplements, even long-term daily doses up to 100 mg are safe. However, in rare cases, taking 200 to 300 mg daily over time has resulted in nerve damage and associated numbness, weakness, and loss of function in the extremities. This serious consequence is more likely to occur when doses of more than 2,000 mg are consumed daily for lengthy periods (two months or more)." This is the research current dosage is based on, and it appears pretty safe to do 200 or 250 or even 300 during pregnancy. Can you imagine 2,000 mg/day? Yikes! That's a lot of bitter little pills!