There is no reason to separate the biotin from other vitamins.

Considering that it is made in abundance in the intestines usually, I assume it does just as much for the body in the intestines as it does in the plasma level.

Please at least try taking high levels for a day. Egg whites hinder biotin absorption.

As long as you aren't eating raw egg whites you should be able to take the biotin any time you like.

Splitting up the biotin may not help either, but experience suggests it might. The symptoms that I saw you mention (hair, nails, skin) would lead me to split the doses.

Thanks again.

Hi D.L.  I read through your list of supplements you take and didn't see calcium d-glucarate. Dr. D recommends 200 to 500 mg. a day for explorers and their chemical sensitivities. It sure has helped me. It might help with the pesticides you said you were exposed to in the past. Hope your health improves soon!

Karen - I'll check into that. The reason I have been taking calcium citrate is that it's easier for me to dissolve and doesn't sit in my upper stomach and hurt. Thanks.