I've trawled round all sorts of places, even Neal's Yard (really posh).
I like Fennel and nettle (combined) and that's just Twinings from Sainsbury's. Plus chamomile and redbush, which I've been drinking for years, I don't get in with green tea!
I have just dug out my infuser teapot - an unused gift from my sister years ago - and am trying some new teas.
Lemon verbena, mint and marigold from my garden, drying at the moment.
Have you found anything good to drink? I think a variety of teas might be useful if I am going to succeed!