For vitamin B12 to be absorbed from the gut, it must bind to a protein called intrinsic factor, which limits how much B12 the gut can take in at one time
Together, you can decide whether taking a vitamin is right for you while you're nursing
Here are some general guidelines to consider: Initial Treatment: For those with a significant deficiency, weekly injections may be recommended initially to rapidly build up Vitamin B12 levels
Intramuscular is sometimes preferred for patients who want faster absorption or who have specific protocols for athletic recovery applications
See the red line in the graph below: As BAC slowly rises and is under .055: The drinker experiences mild stimulating effects such as increased heart rate, increased energy, self-confidence, sociability, and a feeling of wellbeing or "euphoria." This is the Buzz Zone