Many oral products also vary in quality and absorption
However, the effectiveness of B12 injections may vary from person to person
Please consult your physician before starting any exercise or nutritional supplement program before using this or any products if you are pregnant or have a serious medical condition
Persistent fatigue, brain fog, low mood, weight gain, tingling in the hands or feet, frequent illness, post-COVID fatigue, or feeling generally "off" despite eating well and sleeping enough, especially if you're vegetarian, vegan, over 50, on metformin or a long-term acid reflux medication, or have a history of low B12 or pernicious anemia
The medication should be stored in its original packaging or container, which is typically designed to provide adequate light protection
Adams, A