Physician Sportsmed 12(10):97106 van der Worp H, Zwerver J, Kuijer PP, Frings-Dresen MH, van den Akker-Scheek I (2011) The impact of physically demanding work of basketball and volleyball players on the risk for patellar tendinopathy and on work limitations
In lyophilized (powder) form, store in freezer for up to 2 years
While it might seem fine, the effectiveness of the benzyl alcohol preservative can degrade over time, even in a sealed vial
Oral supplements and oral vitamin B12 are also effective methods of supplementation
Vitamin B12 helps calm irritated skin, especially when the skin barrier is compromised
However, neurological symptoms and cognitive decline can occur even in the absence of anemia (14)