BLACKBERRY leaves, Rubus fructicosus, Organic Tea, 1kg

According to a July 2014 study published in Pharmacognosy Review, the blackberry plant is a good source of tannins, iron and vitamin C and other antioxidants. Specifically, blackberry leaves and roots have served as a remedy for diarrhea, regulating menses and anemia. A decoction of the leaves can be used to treat thrush and cleanse the mouth.

Commission E recommends a daily dose of 4.5 grams of the leaf or equivalent preparations. It's also approved for other preparations for internal use, as well as for mouthwashes. They recommend speaking with a doctor if diarrhea continues for more than three to four days.A June 2016 in vitro and in vivo study in Antioxidants shows the main bioactive compounds in berries are also found in the leaves. Blackberry leaves are among the richest sources of chlorogenic acid. Though more research needs to be conducted using human subjects, the study indicated that they are rich sources of bioactive natural products with antioxidant, anti-inflammatory and antimicrobial properties.