Ask your healthcare provider the correct gauge of needle you will use
This improves patient results
While unadjusted analyses showed no significant differences among groups stratified by vitamin B12 levels, multivariate regression indicated that women with moderate B12 levels (293.31422.44 pg/mL) had significantly higher odds of clinical pregnancy compared to those with low levels (OR = 1.83, P = 0.041)
When combined with caloric restriction: the same study's diet-plus-injection arm showed 3.2 kg (7 pounds) additional loss versus diet-plus-placebo at 12 weeks, which was statistically significant (p=0.03)
B12 injections bypass some of the potential barriers to absorption so can be very helpful especially in patients with digestive concerns or pill fatigue
H2 blockers, antacids, Metformin, and related diabetes drugs, or other medications, or infections such as h-pylori that can interfere with B12 absorption