In men, low testosterone levels in the body can be supplemented by hormone replacement with testosterone. Testosterone replacement therapy can be prescribed as an intramuscular injection usually given on a biweekly basis; as a patch or gel placed on the skin, or as putty that is applied to the gums of the mouth. Each of the treatments has its risks and benefits. The decision as to which form of testosterone to use depends upon the clinical situation. Discussions between the patient and health care professional often helps decide which medication to use.
In the United States there are currently no preparations that are FDA approved for testosterone replacement for women.
Testosterone therapy can occur in many forms, from injectable and transdermal creams and patches and even subcutaneous pellets implanted under the skin. In the end it is true, with each form of therapy you are receiving the same testosterone hormone but the efficiency and effectiveness of each form varies greatly. Without question injectable testosterone is the most efficient and effective form of testosterone therapy, as through injections the needed testosterone is placed directly into the blood. While transdermal medications will absorb into the blood many men find difficulty in achieving proper levels with this form making it the least desirable of the four. If injections are not an option for whatever reason testosterone implant pellets are a fine choice and often all the testosterone an individual will need.