Effects of Oral Contraceptives on Human Plasma Vitamin-A LevelsBr Med J 1971; 2 doi: https://doi.org/10.1136/bmj.2.5759.436 (Published 22 May 1971) Cite this as: Br Med J 1971;2:436
- Isabel Gal,
- Christine Parkinson,
- Ian Craft
Vitamin-A levels have been determined in healthy non-pregnant women and in women taking synthetic steroids to suppress ovulation. A significant increase has been found in those receiving oral contraceptives. Further work is necessary to determine whether this may affect the fetus in patients who become pregnant shortly after discontinuing oral contraception.