If you don't have any other options and you feel desperate, then it's worth trying. If you feel worse, stop taking it. Everyone reacts differently. If you don't do well on it, you will be one step ahead when you do see your pdoc because you will have ruled it out. And if it has some benefit, but not a lot, you have that information to share as well. It's all trial and error. Taking it now gives you one less thing to negotiate with your pdoc who may want you to try it anyway and you will have lost a month waiting.

Also, one of the meds I take is an anti-epileptic. It's common for BP treatment.