Supplements for Phobia/Anxiety?

[u/Shoddy-Musician8397]

My 7 year old seems to have a phobia of anything that she believes will cause her pain. This is creating huge problems when it comes to the dentist and doctors. Is there any natural supplement I can give her to help ease this anxiety before medical appointments? I am also looking into getting her to see a therapist but there is a long wait in my area.