The reason is that injections are more easily absorbed by the body, particularly if you have underlying conditions that may lead to an inability to efficiently absorb the vitamin, such as Irritable Bowel Syndrome or Celiac Disease
Human oral bioavailability has not been established
Because B12 injection Treatment delivers the vitamin directly into your body rather than through your digestive tract, it skips the slow absorption route that oral pills depend on, so you tend to feel the difference sooner and hold onto it longer than you'd expect
However, youll also want to make sure that any of these types of supplements do not contain artificial ingredients, and are all natural
If you have absorption problems whether from digestive conditions, medications, or pernicious anemia oral supplements won't work effectively no matter how high the dose
Patch Testing Before applying any new product to your scalp, perform a patch test