How to prevent shaking/nervousness while getting filler?

Hello thanks for asking this question. That fact that the shaking occurs when you are about to get fillers but not when you get Botox, suggests to me that it may have to do with the anesthetic rather than the filler itself. Injectors often use lidocaine with epinephrine to perform a nerve block prior to injecting the fillers. The epinephrine is intended to constrict small blood vessels to minimize bleeding and bruising. If this type of block is being used, the shaking and palpitations is a known side effect of the epinephrine. You may experience similar symptoms when getting a block from the dentist. Simply ask your injector to use lidocaine without the epinephrine or to use a topical anesthetic or just plain ice. If your shaking is, in fact, due to anxiety about the procedure, you may want to talk to your doctor about taking a beta blocker which some public speakers use to control anxiety before speaking in public. Be aware that this may lower your blood pressure so have someone drive you if this is the first time using it. Many injectors use Pro-Nox which is a mixture of laughing gas and oxygen to help you calm your nerves during a procedure. The nice thing about the Pro-Nox is that it is out of your system in 5 minutes so you can drive yourself home. I don't like to give sedatives for simple procedures like fillers but some injectors do.