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The effects of vitamin B12 injections can vary depending on the individuals health status and the severity of the deficiency
This can lead to B12 deficiency, which can cause many symptoms such as numbness, weakness, abnormal gait, memory loss, depression, and anemia among many others (No Stomach for Cancer, 2023)
dye-free or liquid versions of approved drugs)
Therefore, the aim of this study was twofold: 1) to assess vitamin B12 serum levels in ME/CFS patients before and after use of high dose vitamin B12 nasal drops and 2) to compare the changes in function before and after starting therapy, using an activity meter, the physical functioning score of the Rand 36 questionnaire, and both the fatigue and concentration scales of CIS20r questionnaire
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