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Common side effects are mild and may include temporary injection-site irritation, headache, transient flushing, and slight appetite changes
Common CNS causes include: Stroke or TIA sudden interruption of blood flow to the brain, producing one-sided weakness or numbness, facial drooping, or speech difficulty Multiple sclerosis demyelination in the brain and spinal cord causing episodic or progressive numbness, weakness, and balance problems Spinal cord compression from injury, tumor, or severe disc disease, producing weakness and numbness below the level of compression Brain tumors depending on location, can cause focal weakness, sensory changes, or coordination problems Distinguishing peripheral from central causes guides the urgency and type of workup needed
Swirl, never shake
Sensitivity or Allergies to B12 or Its Components: Some individuals may have an allergic reaction to the preservatives or additives in B12 injections, especially those with known sensitivities to certain medications or substances
Predrag Sikiric and his research team at the University of Zagreb, Croatia
Not all the nutrients will make it
