Perhaps the least well known of this list, astragalus (Astragalus membranaceous) is an extraordinary immune stimulant and all over tonic. Studies have demonstrated that long-term astragalus use promotes greater antibody secretion and increased lymphocyte production. As an antioxidant and adaptogen, astragalus protects cells from free radical damage and moderates the body’s stress response. A warming herb, it is said to increase “digestive fire,” promoting efficient digestion. Astragalus can be administered as a tincture or a dried, encapsulated herb, or simmered, then steeped with your favorite aromatic herbs for a health-promoting tea.

A favorite of many foragers, elderberries (Sambucus nigra) are a virtual gold mine of antiviral properties. A variety of studies have indicated that elderberry may have an inhibitory effect of influenza pathogens, while also reducing the duration and severity of flu symptoms. Conveniently ripening as the cold and flu season picks up momentum, elderberries make tasty tinctures, syrups, and lozenges, while the dried berries offer teas an immunity-boosting fruity note.

Warming, aromatic ginger (Zingiber officinale) is a familiar and comforting scent of fall that packs a pleasant, but powerful antiviral punch. Fresh ginger was even shown to demonstrate profound inhibition of the human Respiratory Syncytial Virus (RSV) in a 2013 study. Additionally, ginger stimulates productive expectoration and helps to quiet an upset stomach. Fresh ginger simmered briefly in water makes for an aromatic and enjoyable tea.

Pungent and powerful garlic (Allium sativum) is a favorite of most chefs and “kitchen witches” alike. A well-muscled antimicrobial, garlic does not play nicely with germs of any persuasion. While dried and encapsulated garlic is helpful, when delivered as a component of “fire cider,” or even eaten fresh and raw (for those so brave and daring), garlic is at its most effective.

This citrus-scented member of the mint family is an often overlooked antiviral. Lemon balm (Melissa officinalis) may also be effective in speeding the healing of cold sores. Lemon balm makes a soothing, relaxing cup of antiviral tea, but can be applied as a soothing “poultice” of sorts, or as a tincture.

The fall bearing fruit of the ever beautiful rose (Rosa spp.) is brimming with vitamin C. Another timely foraged fare, rose hips offer exceptional antioxidant potential, anti-inflammatory benefits, and great immunity support. The jewel red fruits can forage in the fall; after removing the inner hairy seeds, the pulp is made into syrups and jellies or dried for tea and other remedies. Antiviral and immune stimulating herbs are a wonderful tool to utilize during the cold and flu season. While there are no guarantees, a thoughtful plan of prevention and quick acting remedies will help to keep you healthy all year long.