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Schweiz Med Wochenschr. 1977 Dec 31;107(52):1943-7.

[Folic acid and pregnancy, a real problem?].

[Article in French]


The efficacy of prophylactic treatment with ferrous sulfate (80 mg Fe++) and the combination of ferrous sulfate with folic acid (80 mg Fe++ and 350 microgram folic acid) were studied in a double blind trial in the 20th, and again in the 30th and 36th week of pregnancy (29 patients). At the beginning of the treatment (20th week) 29% of the patients showed a pathologically reduced serum folic acid level. Combined therapy has a favorable effect on the folic acid levels in the serum and red blood cells; this was confirmed statistically. At the end of pregnancy, 69% of the patients of the control group (ferrous sulfate) showed a pathologically reduced serum level and 23% a subnormal level in erythrocytes. These results unquestionably justify the prophylactic prescription of folic acid during pregnancy.

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