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Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline
Vitamin B12 also has several contraindications: It is important to know that there is no universal dosage for vitamin B12
Similarly, a 2014 feeding study conducted in Ithaca, NY (USA) in which all participants (pregnant [N=26], lactating [N=28], and nonpregnant/nonlactating [N=21] women, ages 21-40 years), consumed a mixed diet with a known amount of biotin (average daily intake, 57 g biotin/day), reported that urinary 3-HIA excretion was higher in pregnant compared to nonpregnant women, while urinary biotin and bisnorbiotin (BNB) excretion did not differ between the groups (21)
Subcutaneous sites include the abdomen and outer upper arms
Follow-ups are free
Although it's uncommon, vitamin B12 or folate deficiency (with or without anaemia) can lead to complications, mainly if you have been deficient in vitamin B12 or folate for some time
