These products are not intended to diagnose, treat, cure, or prevent any disease.
The same source also indicates that injectable B12 reliably restores levels when oral absorption is impaired
it has a much better effect, which is why you will often find these two together in various food supplements
Vitamin B12: Boosts metabolism, improves mood, and combats fatigue
In a 12-week randomized clinical trial involving 300 obese adults, participants receiving 1 mg daily of AOD-9604 lost an average of 2.6 kg (approximately 5.7 pounds) compared to 0.8 kg (1.8 pounds) in the placebo group
According to the DailyMed label, it is given by intramuscular or subcutaneous injection and is not for intravenous use