Headaches, nausea, diarrhea, fatigue, and tingling in extremities are very rare
However, the largest Phase IIb trial involving 536 participants failed to demonstrate statistically significant weight loss compared to placebo at the primary 12-week endpoint, leading to development termination in 2007
If your test results show higher than normal levels, your doctor will probably order more tests to check your liver health
They are, however, prepared by licensed 503A pharmacies using FDA-registered ingredients and strict quality standards
It may take several weks of treatment to notice improvement of condition
Longer term though the damage will mean that the person is unable to use stores to regulate their B12 which can result in susceptibility to B12 deficiency