A vitamin… can i do botox while im on it…???

im on the isotrin A vitamin pills, and the side effects are really starting with dry skin and rash..
can i still get Botox? I normelly Only get a little between the eyes and in my chin… the rash is most Only on my chin in the face, nd really dry lips
I also had 1/2 ml filler in my lips, before I startet on the cure, but would like 1/2 more.
Have anybody any experience with getting Botox or filler (very little amount) while being on a vitamin pills?
Thank you ❤️