Well this is if being pregnant, can a women take vitamin B2 BUT 300mg in the am and 300mg in the pm and magnesium 250mg in the am and 250mg in the pm? to avoid migraine headaches.. I take that right now as a natural way to help preven migraines, but the first time I got preg. my dr. told me that since it wasn't FDA approved.. bla, bla.. so I came off it, and I was miserable! By taking this right now, I am able to come off the topamax 300mg I'm taking a day!
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My first question is are you vegan?
Vitamin B2 (Riboflavin) is needed to process amino acids and fats, activate vitamin B6 and folic acid, and help convert carbohydrates into energy. B2 does not have any well document contraindications that I could find. Although you referenced dosage was on the high side. Many Vitamins considered "safe" have not been reviewed for use in pregnancy.
The best sources of riboflavin include brewer's yeast, nutritional yeast, almonds, organ meats, whole grains, wheat germ, wild rice, mushrooms, soybeans, milk, and spinach.
Vitamin B2 is classified as a Category A in pharmacology, meaning that studies indicate no risk to the fetus.
Riboflavin toxicity is generally rare. Possible reactions to high doses include itching, numbness, burning or prickling sensations, and sensitivity to light. High doses of riboflavin can affect urinalysis test results.
Dosage Recommendations are as follows
Pediatric
* Infants birth to 6 months: 0.3 mg (adequate intake)
* Infants 7 to 12 months: 0.4 mg (adequate intake)
* Children 1 to 3 years: 0.5 mg (RDA)
* Children 4 to 8 years: 0.6 mg (RDA)
* Children 9 to 13 years: 0.9 mg (RDA)
* Males 14 to 18 years: 1.3 mg (RDA)
* Females 14 to 18 years: 1 mg (RDA)
Adult
* Males 19 years and older: 1.3 mg (RDA)
* Females 19 years and older: 1.1 mg (RDA)
* Pregnant females: 1.4 mg (RDA)
* Breastfeeding females: 1.6 mg (RDA)
Magnesium
Magnesium is generally considered safe in pregnancy and some women are given magnesium supplements.
Quote form a study called
Magnesium and Calcium Supplementation During Pregnancy
Two new studies to be published in BJOG: An International Journal of Obstetrics and Gynaecology in August 2007 look at mineral supplementation and the prevention of specific conditions during pregnancy.
In the first study, researchers examined the effect of magnesium supplementation and the development of hypoxic-ischaemic encephalopathy (HIE) in babies. HIE is the reduction of oxygen supply to tissues and the brain due to inadequate blood flow. The indications of HIE or perinatal hypoxia are: decelerated fetal heart rate, low Apgar Scores, meconium aspiration pneumonia (meconium stained full-term infants with signs of respiratory distress from birth) and stillbirths at term. These outcomes are often linked to poorly nourished mothers who lack magnesium in their diet during pregnancy.
4494 women attending antenatal clinics at a midwife obstetric unit and two hospitals in Cape Town, South Africa were recruited for the study. They received either a magnesium supplement (128 mg elemental magnesium) or a placebo daily over a period of four weeks.
Findings show that magnesium supplementation had no effect on the course of the pregnancy or fetal development but some benefits were detected on the fetus during labour. Perinatal hypoxia during birth was less in the women who took the magnesium supplements when pregnant. This suggests improved perinatal outcomes were the result of regular, controlled magnesium intake for pregnant women who were deficient in magnesium.
Study can be found at
http://www.medicalnewstoday.com/articles/78353.php
Normal daily recommended intakes in milligrams (mg) for magnesium can be found here
http://www.mayoclinic.com/health/dru...ation/DR202644
Of course one needs to do research for one's self and maybe reask your doctor about what exactly his/her issue is.
Good luck,
Demetria
Disclaimer
Not a Doctor, Don't want to be one. Information is not intended to diagnose, or be used as treatment, education materials. Just options and suggestions. You are the ruler of your body, it's your responsibility not mine.