Choose IGF-1 if your goals center on performance enhancement, muscle building, and combating age-related changes in body composition and energy
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Because B12 is primarily found in animal products (meat, fish, dairy, eggs), people following vegetarian or vegan diets may be at higher risk of deficiency
Dosages may need adjustment depending on individual needs, response to treatment, or changes in health conditions
Discuss the strength of the evidence, alternatives, potential harms, interactions, and monitoring with a qualified clinician
However, certain drugs may affect how your body uses B12, making injections particularly beneficial