To get the maximum benefit from Testosterone Undecanoate 40mg Capsule it should be taken with food at the same time as advised by your doctor The dosage and frequency of taking the medication depend on the reason for its use Your doctor will determine the appropriate amount needed to improve your symptoms Remember to swallow the tablets whole with a glass of water It is important to take this medication for the duration prescribed by your doctor Common side effects of this medication may include leg pain and dizziness If these side effects are bothersome or become severe it is advisable to inform your doctor There may be methods to reduce or prevent these side effects Certain side effects such as shortness of breath frequent or persistent erections and low sperm count may require you to discontinue the medication Before taking this medication inform your doctor if you have a history of high blood pressure heart attack or stroke It is also important to disclose all other medications you are currently taking as some may interact and reduce the effectiveness or alter the way this medication works Your doctor may conduct regular blood tests to monitor testosterone and prostatespecific antigen PSA levels