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A 2021 review (Fink 2021) frames HCG as a viable option for secondary hypogonadism because it raises testosterone while supporting, rather than suppressing, sperm production
It is uncommon to experience vitamin B12 injection side effects, but some people may have an allergic skin reaction
Add b12 supplementation separately based on testing and risk factors
The honest answer is that the two forms are not interchangeable, and the oral route has a specific rationale that is worth understanding before you choose it
We also go beyond the research, interviewing top experts in their fields to bring you the most informed insights
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