Using Fat Dissolving Injections That Are Not FDA Approved Can Be Harmful FDA FDA is warning consumers not to use fat dissolving injections that are not FDA approved due to reports of adverse reactions such as permanent scars, serious infections, skin deformities, cysts, and deep, painful knots. FDA is warning consumers not to use fat dissolving injections that are not FDA approved due to reports of adverse reactions such as permanent scars, serious infections, skin deformities, cysts, and deep, painful knots. Lemon Bottle Elyse Beauty & Laser Clinic in Lewisham