Allergic reactions: While rare, it is possible to have an allergic reaction to vitamin B12 injections
Medications Medications such as acetaminophen, aspirin, or ibuprofen may relieve some of the pain, but will not actually treat the underlying meniscal tear
Since the treatment is noninvasive, there is little to no downtime, so you can resume your regular activities right away
Foods high in B12 include fish, meat, poultry, eggs, dairy produce, and foods that are fortified with B12 (like some breakfast cereals.) If you follow a restrictive diet or have a condition that impacts absorption, you could be at risk for a B12 deficiency
Daily dosing would risk supratherapeutic accumulation and is not supported by the published pharmacokinetic data