There have been no reports of weight gain registered as related to Botox - meaning not even 1 person has had that reported as an adverse effect thus far
Addressing the Core Question This is where things get interesting, and the short answer is: yes, you can take B12 tablets as well as injections, but crucially, this should always be under the guidance of a healthcare professional
Within a couple days after receiving B12 injections, patients often report an increase in their energy and stamina levels
Blood cell production typically begins improving within 35 days, haemoglobin rises over 12 months, whilst neurological recovery may take several months
The SELECT trial [3] (N=17,604, NEJM 2023) demonstrated that these effects extend beyond weight loss to 20% cardiovascular risk reduction over 4 years