vitamin b12 1 ml injection Sandoz Injectable Solution Deficiency can result in anemia Vitamin B-12 Injection, 3,000 mcg/ml

Here's something the internet won't tell you when it sells you research-grade powder: with an unregulated compound, what's in the bottle matters as much as the molecule itself

Oral supplements, on the other hand, have to go through the digestive system and may not be entirely absorbed

For standard oral B12 tablets or capsules, taking them with or without food generally makes little difference to absorption in individuals with normal gastrointestinal function

What you can expect depends on how early the vitamin B12 deficiency is caught and how low your levels are

About 40-60% of the population has some variation in the MTHFR gene