L-Carnitine may help reduce muscle damage during resistance training
Liver Disease: Individuals with liver disease may have impaired vitamin B12 metabolism, and injections may need to be closely monitored
If this doesn't bring improvements, I'll then try nasal drops (Gambit62 - who had similar problems - recently wrote in a post that she didn't start to improve until she started using the nose drops)
Because a large number of comparisons were performed on the relative abundance data, main effect results from these analyses also underwent a BenjaminiHochberg false discovery rate (FDR) correction for multiple comparisons, and instances where a result was significant after this correction have been duly noted
Oral supplements, on the other hand, rely on your digestive tract, where only a portion of the vitamin gets absorbed, especially if you have conditions like IBS or low stomach acid