DPQ is an antiviral compound. DPQ has also been shown to bind to a widened RNA major groove at the internal loop. DPQ acts against the H1N1 and H3N2 strains of influenza A as well as influenza B.
Zanamivir hydrate is neuraminidase inhibitors. It is used worldwide for the treatment and prophylaxis of influenza caused by influenza A and B viruses.