Here is a write up I did:
Hemlock Spruce inner bark (Tsuga canadensis, syn. Abies canadensis). Warm/dry/balsamic
The bark of this northern tree , which is also known as Eastern Hemlock, has a long history of use by native peoples. The bark is astringent and antibacterial, and has been used internally for diarrhea, head colds, damp coughs, digestive problems, and rheumatic pain by the Abnaki, Cherokee, Anishnaabeg, Malacite, Menominee, Micmac and Delaware peoples. The bark and leaves have been used topically as a wash for itching, eczema, to stop bleeding, and as steams for arthritic pain and colds. The Thomsonians used “Abies” topically as an ointment (mixed with lard, beeswax and Cayenne pepper) for rheumatism. A tea made from the boughs was used as a diuretic and to strengthen the kidneys and lower back. It is also recommended that for “bad water”, boiling it with Hemlock boughs will make it safe and palatable. The inner bark contains piceatannol, a powerful antioxidant and stilbenoids which are antibacterial and antifungal. A tea of the inner bark can be used for candida overgrowth of the bowel, as a douche for vaginal candidiasis, ulcerative colitis, Clostridium difficile infections (combine it with Chinese Coptis and Thyme) and gastroenteritis. The essential oil (distilled from the leaves) can be used as an inhalation (diluted in water) for sinusitis, bronchitis and head colds. Unfortunately, the Eastern Hemlock is under assault from an introduced invasive pest, the wooly adelgid, which is killing off this beautiful tree.
Dose: Tea: 1-2 tsp. dried inner bark, 12 oz. water, decoct 15-20 minutes, take 4-8 oz. BID