It sounds like everyone that replied takes the SourceCF. I've never tried them, but I've always had low vitamin levels. Then, when I took the Aquadeks, suddenly all my vitamin levels were at 100% except Vit D, which was at 96%. And many people who live in AK have low levels of Vit D, not just CFers. Anyway, I think the raise in vitamin levels contributed to my pregnancy and I took them through out it.