does a b12 injection work straight away Injections: Who Should Get Them and How Long Do They Last? How to self-inject intramuscular vitamin

4) [3748], as treatment decision depends on the patients condition and the physicians opinion

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Among women whose dietary intake of vitamin B-12 was less than the Indian RDA during pregnancy (1.2 g/d) in the first trimester, the frequency of IUGR was 17 of 61 (28%) in the vitamin B-12 group and 17 of 50 (34%) in the placebo group ( P = 0.14 by 2 test)

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They will also set an upper limit on the total weekly dose (for example, some experts recommend not exceeding approximately 300 mg per week in subcutaneous dosing without further evaluation) to minimize any risk of adverse effects