The use of these supplements should be seen as an acute therapeutic phase to get patients back into a range that can be maintained with diet and lifestyle
A lack of vitamin B12 doesnt directly lead to weight gain, however, so getting a B12 injection alone wont cause you to lose weight no matter how many times your doctor calls the injection a skinny shot
But this will ultimately depend on your doctors assessment
"Effect of peptides derived from food proteins on blood pressure: a meta-analysis of randomized controlled trials"
Hirose S, Mitsudome A, Yasumoto S, et al
Rather, they may serve as an additional tool for patients who have reached a weight loss plateau despite adherence to dietary guidelines and physical activity recommendations, or for those experiencing clinically significant weight regain that threatens their metabolic health improvements