Swine flu is particularly worrying because it is a relatively new infection, and has already proven to be deadly in some cases. However, it is still an influenza infection, so the best remedy is to improve your immune system and try to neutralize the underlying virus. Echinacea is very beneficial for the immune system, and also provides anti-inflammatory and antioxidant properties, which can help relieve many of the symptoms of swine flu. However, if you believe you have been infected by swine flu, it is very important that you seek medical attention, and treat herbal remedies as complementary treatments.