If you need daily or weekly injections, it will add up quickly
Vasireddi, N., Hahamyan, H., Salata, M
However, not everyone notices immediate changes
These conditions include cardiovascular disease (such as coronary artery disease, stroke, life-threatening arrhythmias, congestive heart failure, or untreated hypertension), advanced arteriosclerosis, hyperthyroidism, glaucoma, psychiatric agitation or psychosis, recent or concurrent MAOI therapy (within 14 days), history of drug abuse, pregnancy, breastfeeding, pediatric patients under 16, and concurrent use of other weight-loss medications
Verhaeverbeke, 1997) One trial of predominantly vegetarian families from India (Deshmukh, 2010) One trial of half vegetarians and half vegans whose responses were mixed together (Del Bo, 2019) One trial of B12 supplementation in vegans who werent previously supplementing (Crane, 1998) The dotted lines represent the trial of only vegans (500 g per day by Crane et al.) and the trial of half vegetarians and half vegans (50 g and 2,000/wk by Del Bo, 2019)