Why did I feel extremely unwell after getting derma lip fillers?

It sounds like a classic vasovagal reaction.  The foregoing information provided is not intended nor implied to be a substitute for professional medical advice, it is provided for educational purposes only.You assume full responsibility for how you choose to use this information.Always seek the advice of your physician or other qualified healthcare provider before starting any new treatment or discontinuing an existing treatment. Talk with your healthcare provider about any questions you may have regarding a medical condition.

Hello Toshio,What you experienced is called a vasovagal reaction.  It does not happen commonly with these procedures, but it can happen.  It is more common on an empty stomach.  What takes place is a reflex where you feel some discomfort, it sends a signal through a particular nerve, and that signal makes you feel nauseated, developed cold sweats, slows your heart rate, makes you go pale, and in some cases can make you pass out.  The best way to avoid this in the future is to make sure you ate, and with the use of topical anesthetic agents to make the treatment more tolerable for you.I hope this helps and good luck. 

It sounds like you might have been anxious during the injections and that's why you reacted the way you did.  Often patients who get injected and don't eat before or are anxious can have this effect.  I would definitely get the symptoms checked out by an internist to make sure there is nothing else wrong.  Best, Dr. Green