If you are pregnant or considering becoming pregnant, do not take Vitamin A supplements without consulting your doctor or pharmacist. WARNING: When taken in excess of 3000 micrograms retinol equivalents, vitamin A can cause birth defects. The recommended daily amount of vitamin A from all sources is 700 micrograms retinol equivalents for women and 900 micrograms retinol equivalents for men. Vitamin supplements should not replace a balanced diet.