Viridian Horseradish and Garlic Complex with vitamin C and zinc is a multi-purpose supplement which can offer many health benefits. The most common use for horseradish is as a natural way to overcome sinusitis, which is an inflammation or swelling of the sinuses. It helps to break down mucus blocking the nasal passage and clear the airways, and it can also help you to deal with hay fever and upper respiratory symptoms. Garlic boasts immune boosting and antimicrobial properties, which can further benefit the sinuses as well as help protect you from the likes of colds and flus. Vitamin C and Zinc also provide supplemental support to the immune system, further boosting the immune systems strength.