I’ve been harvesting redwood branches for years, usually freshly fallen ones. Redwood is an ancient tree, a time & record keeper, with such a nice energy. I always feel at home in the midst of a redwood grove.
A few years ago, I had a hard time finding anything regarding its medicinal uses, except for a few anecdotes regarding Native uses in the past, but nothing specific. Nowadays, for some reason, there is more information available about redwood medicine.
I was especially happy to find a useful link that talks about Western as well as Eastern (TCM) medicinal use for this tree. Some of the info is a confirmation of the things I had observed as well as guessed.