Horbäach Nettle Leaf Extract Drops is a super-concentrated liquid herbal supplement made from nettle leaf (Urtica dioica). The 2 fl oz (59 mL) vegetarian formula provides nettle leaf in a convenient dropper format for daily supplementation. It is alcohol-free, non-GMO and gluten-free, and is also free from wheat, yeast, milk, lactose, soy, artificial colours and flavours. Horbäach describes the formula as containing naturally occurring vitamins, minerals and polyphenols.