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It's also important to remember that if you have Leber's disease, a specific type of B12 called cyanocobalamin could be harmful to your optic nerve
Here's what you need to know about vitamin B12 injections, from where and how to get them to potential benefits and side effects
Annu Rev Biophys Biomol Struct (1997) 26:37399
Steady absorption: While absorption may be slower than an injection, the nasal route may offer a gentler uptake which can be preferable when youre simply aiming for improved sleep quality rather than a strong acute effect
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