Mullein has long been used to soothe the lungs and quell coughs. It's a mild relaxant for the lungs and also moistens and soothes the mucus membranes. This is wonderful in dry, irritated situations where there is a cough or damage from smoke inhalation, asthma or upper respiratory infection.
Marshmallow is used to expel mucus where this too much, soothe inflamed or dry/damaged tissues and gently stimulate the immune system. It has a long history of use in treating coughs, healing wounds and sore throats as well as soothing digestive inflammation and ulcers.
Tulsi/Holy Basil has been used to soothe the nerves and increase tolerance of stress (physical, immunological, emotional and psychological) as an adaptogen. It's a wonderful immune tonic due to its ability to increase stress tolerance of the immune system. And it's also delicious.
Elderflower is a wonderful and under-utilized immune tonic herb. We often rely on her late summer berries for immune support but the June blooming and fragrant flowers are a wonderful and slightly milder option. Elderflower tones the immune system, giving it support without over stimulating.
Sage is wonderful immune stimulant, high in volatile oils that are anti-viral and helpful for opening the airways and clearing of congestion. Long used in the treatment of coughs and colds, Sage is a true cold-season ally.
Orange Peel to soothe the belly and provide a kick of vitamin C.