No treatment, just a follow up cardiac MRI after 3 months which showed (thankfully) a resolution of inflammation and normal heart function. Was prescribed low-dose beta blockers if the palpitations bothered me too much though didn’t end up needing them.

As I understand it the typical approach is to wait and see since the majority of cases resolve without treatment - though I’ve noticed in the US it’s more popular to prescribe a low-dose cocktail of various heart meds. Not aware of any clinical data on their effectiveness in mild cases.