In contrast, a B12 injection (typically administered into a muscle, known as an intramuscular injection) bypasses the entire digestive system
1 Protease inhibitor cocktail
[DOI] [PMC free article] [PubMed] [Google Scholar] 92.Mrowicka M., Mrowicki J., Kucharska E., Majsterek I
Dietary modifications commonly occur with semaglutide treatment, both due to the medication's appetite-suppressing effects and patients' intentional efforts to maximize weight loss
A 12-week randomized controlled trial in vegans and vegetarians with marginal deficiency (Effect of two different sublingual dosages of vitamin B12 on cobalamin nutritional status, Del Bo and colleagues, Clinical Nutrition , 2018, 40 subjects) found that even a modest sublingual dose of about 50 mcg per day restored serum B12 and improved holotranscobalamin, methylmalonic acid, and homocysteine, which confirms that sublingual liquid B12 can correct a marginal deficiency in plant-based eaters