Women taking oral contraceptives need vitamin supplements
This is probably false. The transport of some vitamins in blood and the metabolism of some
vitamins can be changed by the oral contraceptive pill. Lower dose pills have a lesser effect. This
does not necessarily mean that one needs to alter one's vitamin intake. Studies of vitamin
supplementation in this situation have been conflicting. The vast numbers of women who take the
oral contraceptive pill do so without any convincing evidence of functional abnormality arising
from vitamin deficiency.