Botox and immediately became lightheaded. Is that normal?

Botox doesn't affect your brain. Some people can experience "light headedness" after an injection, especially a sensitive site like the nose. It seems as though it has resolved. If you experience it again, call your Dr. Best, Dr. Emer

Thank you for sharing your concerns. You have nothing to be worried about. Although it has not occurred before with injection of fillers, feeling faint when seeing a needle can occur at anytime. It is certainly not related to any effect Botox had on your brain and commonly occurs. I hope this helps.  Good luck,

Hey Kryssy, 

Your experience is quite common, especially under the nose which is a very tender area. The response you had is likely a "vasovagal" episode. There is no long term consequences or sequelae associated with it. Just recall it for next time as it could happen again during or after your next injection. 

As far as brain or kidney damage, very little if any botox is absorbed systemically. I have never heard of any systemic damage from such minuscule amounts used in facial wrinkle treatment. You likely had between 2-6 units injected in your face under the nose. very small. no worries. 

Hope this helps you rest better tonight!

Dr. Robb