The rate your body produces choline may not be adequate to meet daily metabolic needs, particularly during weight loss when a lot of body fat must be broken down
However, there are some differences between the two forms of supplementation: Absorption : B complex injections are typically more effective at increasing blood levels of the B vitamins than oral supplements because they bypass the digestive system and are absorbed directly into the bloodstream
Now heres the funny bit The MHRA in responding to our petition stated: Vitamin B12 could not legally be classified as a medicine that can be made available for sale without prescription in pharmacies because it is an injection and because the condition it is licensed to treat, pernicious anaemia, needs a clinician to diagnose it, and monitor its treatment (see point IV above)
Rather, each product fits a different packaging logic
The mechanism is plausible, as B12 plays a role in neurological function that could influence nausea pathways, but it remains unproven
AMPK is a stress-response pathway