Safety concerns are being raised about certain weight loss medications. These medications are modified versions of well-known drugs. They were originally made to fill a need during a shortage, but that shortage has ended.

Now, advocates are warning that these modified medications are being widely produced. The FDA has cautioned that these unapproved medications may pose a greater risk to patients.

Patients are advised to be cautious of unusually low prices and false claims that these medications are equivalent to approved drugs. Further information is available from the FDA and other sources.