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well-tolerated in mice, rats, rabbits, and dogs with no serious organ toxicity.[34][35] Clinical Safety : Mild local irritation possible at injection sites, but no systemic adverse effects reported in trials.[36][37] Potential Risks : Theoretical concerns include pro-angiogenic effects potentially promoting tumor growth, though no evidence supports this in studies.[38] Long-term human data is limited, so monitoring is advised

Men with varicoceles or previous testicular trauma show particularly strong responses to TB-500 treatment, with some achieving normal sperm parameters after 16-20 weeks of therapy

The fix: Commit to consistent use for 8-12 weeks before judging effectiveness

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