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In Canada and most of the European Union, its not approved for medical or cosmetic use and is considered an unregulated compound (Health Canada advisory listing AOD9604 as unauthorized)

If it impacts the testicular microenvironment, it could enhance sperm count or motility, but data are limited and the mechanism is different than how it might act in ovaries or endometrium

For semaglutide users specifically, the methylcobalamin advantage is about bypassing a compromised absorption system

Let me give you an ultra-brief summary: There is considerable variability between the different commercially available serum B12 assays

Always follow your healthcare providers instructions and the labeling provided by your pharmacy