Which form of B12 is best for shots/injections and why? 1. Cyannocobalamin 2. Methylcobalamin 3. Hydroxicobalamin

Usually Methyl but.. One thing is clear- Cyano is worst- it has small amounts of cyanide the body must detox & convert it to an active form; little is converted. Methyl is the active form, esp. good for those with MTHFR mutations & neurological symptoms & best for most. Some do better with Hydroxo. Experts agree Hydroxo better than Cyano but haven't seen many comparisons of Met vs. Hydr.See http://tinyurl.com/pp5a8zb.