Applying testosterone to treat impotence on the same day is inaccurate, the exact time of onset of action is affected by individual factors, and may not necessarily be effective on the same day. According to the instructions of the testosterone tablets, the effective concentration can be reached in 2 hours after taking the medicine, theoretically, it can be effective on the same day. However, the specific time of effect is also affected by individual factors, such as weight patients, the time to reach the effective concentration will be delayed, and even some impotence patients are not sensitive to testosterone treatment, there is no obvious effect, so that the application of testosterone treatment for impotence on the same day effect is not accurate. Testosterone can be used to treat impotence caused by androgen deficiency, but it is forbidden to be used in patients with prostate cancer or suspected prostate cancer. Adverse reactions such as liver function impairment, jaundice and testicular atrophy may occur during the use of the drug, and liver function should be monitored during the use of the drug. If you need to use the drug, you need to use it under the guidance of a professional physician, and avoid choosing to apply it on your own to avoid affecting your condition.