Is it normal practice using fillers that are not FDA approved on patients?

I would recommend that you don't have any non FDA approved fillers injected into your face. Off label use of FDA approved fillers is done regularly though.

Once the FDA approves of a filler (or any drug for that matter), a physician may use it for a patient in any way he or she feels is appropriate.  If it is used in an area or in a way that was not specifically FDA approved, it is being used "Off Label".  40% of all prescriptions are Off Label.  Off Label use of a filler is not illegal, unethical, or immoral.

Use of a filler that is not FDA approved is illegal, unethical, and just plain wrong.  While in the United States, do not allow anyone to use a product that is not FDA approved on you.  There is no need to do this except for the fact that the non FDA filler may be cheaper.  Once the complications begin, the pain, the deformity, and the medical bills will make that acceptance of initial lower cost seem foolish.

while doctors often Inject fillers that are FDA approved "off label", meaning injecting them in places other than their original approved "on-label" site, (such as cheecks instead of around the mouth), there should never be an non FDA approved filler injected In the United states.Stay away from questionable places or deeply discounted injectables that could potentially be harmful! Best of luck!