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Although methylcobalamin and vitamin B12 are terms used interchangeably, vitamin B12 is also available as hydroxocobalamin, a less commonly prescribed drug product (see Hydroxocobalamin monograph), and methylcobalamin
Self-inject into your mid-thigh quadriceps for easy access and safety, or ask someone to inject into your deltoid/shoulder, and ensure you're reaching muscle tissue, not just subcutaneous fat, for optimal results
Drugs.com says that some side effects associated with the injections include nausea, vomiting, indigestion, and mild diarrhea
Why Test First
This method is commonly used in patients who may have low energy, fatigue, vitamin deficiencies, stress, poor absorption, or increased nutrient demand