The frequency of B12 injections depends on your individual needs and the recommendation of a healthcare professional
The foods highest in vitamin B12 are: Organ meats, such as beef and chicken liver Wild-caught fish, including salmon, herring, mackerel, tuna, trout and sardines (also great sources of other vital nutrients, like omega-3 fatty acids) Organic dairy products, including probiotic-rich yogurt or raw milk Pasture-raised poultry, including turkey or chicken Grass-fed beef and lamb When its not possible to get enough vitamin B12 from your diet, perhaps due to genetic conditions or taking necessary medications, someone might choose to boost intake of vitamin B12 in several ways other than receiving injections
if you are targeting one, it is important to supplement with all of them
But if you have enough of it, there is no clear indication that the vitamin helps in weight loss
Some feel a change the same day