Still, that doesnt mean children and younger adults, including those who are pregnant and nursing, cant develop B12 deficiency ( B12 deficiency is often misdiagnosed, often due to inadequate laboratory testing or because the symptoms are not specific ( Read on about nine of the most commonly reported symptoms related to B12 deficiency and how this deficiency is diagnosed and treated
Why its hard to say how often serious side effects happen One frustrating reality is that precise incidence rates for many B12 injection complications are not well defined
Sanz-Cuesta T, Escortell-Mayor E, Cura-Gonzalez I et al (2020) Oral versus intramuscular administration of vitamin B12 for vitamin B12 deficiency in primary care: a pragmatic, randomized, non-inferiority clinical trial (OB12)
Participants were randomly assigned, 1:1:1, to once-weekly combination cagrilintide and semaglutide 2.4 mg, once-weekly semaglutide 2.4 mg plus placebo or once-weekly cagrilintide 2.4 mg plus placebo