Oral testosterone is FDA-approved for adult men with hypogonadism—low testosterone caused by certain medical conditions affecting the testes, pituitary gland, or hypothalamus. It's particularly well-suited for men who have needle anxiety or prefer to avoid injections, those concerned about gel transfer to family members, frequent travelers who want convenient medication, and anyone who prefers the simplicity of oral dosing. Note that oral testosterone is not FDA-approved for age-related low testosterone or for use in women.

The most common side effects include headache, increased blood pressure, nausea, changes in hematocrit (red blood cell levels), and changes in HDL cholesterol. Blood pressure elevation is the most notable concern with oral testosterone and requires regular monitoring. Serious but rare risks include blood clots (venous thromboembolism), sleep apnea, and reduced sperm production. Your provider will monitor your blood pressure and lab values regularly to ensure safe use.

Both oral and injectable testosterone effectively restore testosterone levels to normal. Injectable testosterone may produce slightly more stable levels between doses, while oral testosterone has twice-daily peaks and troughs. Oral testosterone is more convenient for men who prefer not to inject, while injectable testosterone is more cost-effective for some patients. The choice depends on your preferences, lifestyle, and individual response. Some men try both before deciding which works best for them.

Yes, like all forms of testosterone replacement therapy, oral testosterone can suppress sperm production and impact fertility. External testosterone signals your body to reduce its own production, which includes sperm. If you're planning to have children, discuss fertility-preserving options with your provider before starting oral testosterone.

Yes. Unlike older oral testosterone products (like methyltestosterone) that caused liver damage, testosterone undecanoate is absorbed through the lymphatic system and bypasses the liver entirely. Clinical studies lasting up to two years show no evidence of liver toxicity with oral testosterone undecanoate. This is a major advancement that makes oral testosterone a safe, viable option for long-term TRT.