Peppermint is even more wild becasue while Menthol is a TRPM8 agonist (cold sensation), ECGC, also very high in peppermint, is a TRPV1 agonist (warm sensation), which has the opposite effect of TRPM8.

The EGCG is probably what is reducing the blood pressure.

Transient receptor potential vanilloid type 1 is vital for (−)-epigallocatechin-3-gallate mediated activation of endothelial nitric oxide synthase

https://onlinelibrary.wiley.com/doi/10.1002/mnfr.201400699

Cardioprotective and Anti-Hypertensive Effects of Epigallocatechin Gallate: Novel Insights Into Biological Evidence

https://onlinelibrary.wiley.com/doi/full/10.1111/jch.70036

Anything with EGCG in it causes me extreme bladder pain, even peppermint tea. While taking tons of Ricola cough drops (high in mentol) once when I had covid I found my bladder pain vanished. I then learned how the TRPV1 receptor is involved in my bladder pain.

https://www.nature.com/articles/s41598-018-24056-0

I