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Annual Review of Biomedical Engineering , 16 , 321346
171 Trials in aging men with erectile dysfunction have found treatment with tribulus extract, at a dose of 250 mg three times daily for three months, can increase testosterone levels and improve erectile function without worsening lower urinary tract symptoms
Furthermore, the 0.9% benzyl alcohol preservative inhibits microbial growth, allowing multi-dose use of reconstituted peptide solutions without compromising sterility
The rise in bioavailable testosterone suggests an improvement in the fraction of the hormone that is biologically active and capable of exerting physiological effects
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