In clinical studies involving infertile men, PRP treatment has been associated with improved semen parameters, including increased sperm concentration, enhanced motility, and reduced DNA fragmentation [58, 59]
Injections of Hydroxocobalamin 1mg/ampoule, which is a prescription-only medicine, are used to treat people with symptoms associated with vitamin B 12 deficiency after they have been diagnosed via a blood test
Its not FDA-approved, and selling it as a drug or supplement in the US isnt legal (source)
This extremely limited study provided preliminary safety data but offers virtually no information about efficacy or optimal dosing
pycnogenol, On the other hand, has been a major source for both flavonols and polyphenols which is very potent against several diseases
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