To address these concerns, the first step is a blood test to check your hormone levels. If diagnosed with clinically low testosterone, a doctor may prescribe testosterone replacement therapy (using generic testosterone gels or injections), which can improve libido and muscle mass. However, using testosterone solely for bodybuilding carries health risks and is not recommended. For premature ejaculation, treatments include daily or on-demand selective serotonin reuptake inhibitors (SSRIs) like paroxetine or dapoxetine, or topical lidocaine sprays to reduce sensitivity. Please consult a healthcare provider to safely tailor a treatment plan for your specific needs.