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Although not common, cyanocobalamin injections can also cause side effects such as diarrhea or a sensation that your entire body is swollen
While these can be appealing for users looking to avoid injections, research on their effectiveness remains limited
They help maintain semen viscosity and timing of liquefaction, which matters for sperm release and motility
A meta-analysis of 16 biologics found that while injection site reaction rates ranged from 0.8-15.5%, treatment discontinuation was extremely rare
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