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The current WHO recommendation for women of fertile age, whether pregnant or not, is that their vitamin A intake should not exceed 10,000 IU per day or up to 25,000 IU per week, and that giving a single dose greater than 25,000 IU is not advisable. This recommendation is based on concern about toxicity. High doses of vitamin A cause birth defects. The foetus is most vulnerable in the first two months of pregnancy but it is not certain that higher doses later in pregnancy are safe. Beta-carotene is the safest way to supplement pregnant women, because it is not teratogenic.







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