Is the naltrexone implant FDA approved?

The FDA has not given a specific approval for the administration of naltrexone by having it implanted under the skin of an individual. Prescription uses of naltrexone can be administered in several forms – as a pill and as a monthly injection. The implant is compounded for an individual only after a prescription is written by a medical doctor who has determined that his or patient is a good candidate for the implant. Only a licensed medical doctor can insert the implant into his or her patient who consents to this treatment option.