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This is due to a low level of toxicity
3 Progress in Neurobiology
According to the randomization procedure, Group 1 was assigned to the novel methylcobalamin nasal spray (NASO B12) and Group 2 was assigned to methylcobalamin oral tablet for the treatment of vitamin B12 deficiency during the study period of 15 days [Figure 1]
I feel like I need to keep yawning and my arms feel tingly as well as brain fog
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