Always aim the needle against the inside glass wall of the vial
Patients with severe hepatic or renal impairment may require special consideration, though specific dosing guidelines for these populations have not been established
This may result in sense loss, difficulty in proprioception, neuropathic pain, difficulty walking, poor balance, loss of sensation in the feet, muscle weakness, blurred vision (either due to retinopathy [27] or optic neuropathy [28] ), impaired urination, fertility problems, decreased sense of taste and smell, decreased level of consciousness, changes in reflexes, memory loss, mood swings, depression, irritability, cognitive impairment, confusion, anxiety, clumsiness, dementia, and, in more severe cases, psychosis
Few plant foods naturally contain vitamin B12