One hundred twenty-four pregnant women in Canada received 12 mcg of oral vitamin B 12 once daily beginning at 13 to 22 weeks gestation and continuing through 8 weeks postpartum when blood and breastmilk were sampled for vitamin B 12 measurement
10.1074/jbc.RA120.013478 117 NishimuraS.KiokaH.DingS.HakuiH.ShinomiyaH.TanabeK.et al (2025)
The most common side effect of B12 injections is irritation at the injection site, and injections are typically administered intramuscularly or subcutaneously. Less common side effects may include headache, nausea, diarrhea, itching, or a brief feeling of lightheadedness after the injection
Huberman notes that consistent physical activity enhances cognitive function and increases overall energy levels, both of which are crucial for maintaining physical and mental well-being throughout life
Sources: Here are the recommended dosages of various supplements as discussed by Omega-3 Fatty Acids : At least 1 gram per day of the EPA form, up to 2 or 3 grams per day 1
(2007) 3(1):e5
