Nettles have been found to contain antihistamines which are a critical defense against the body’s natural response to pollen and other allergens. Additionally, their high nutritional value is part of what has made them such a popular food source—Nettles are a great source of iron, calcium, Vitamin C, folic acid, potassium, manganese, and carotenoids. Dried Nettle leaves are also sometimes used in teas for expectant or nursing mothers.
Tinospora has been shown in clinical studies to stimulate macrophages, which have been shown to support the immune system and the body's ability to respond to seasonal transitions. Tinospora has antioxidant effects, and has been shown to decrease sneezing, nasal discharge and an itching, stuffy nose. It is most commonly taken in a capsule, and acts as a go-to for many with sinus issues.