[simple_tooltip text=Capsaicin tooltip=An active compound found in chilly peppers responsible for its pungency. It is used in treating nerve pain. ], a compound found in jalapenos, may help thin mucus, relieve congestion and help sweat out a fever (32). However, further research is warranted to understand the effect of [simple_tooltip text=capsaicin tooltip=An active compound found in chilly peppers responsible for its pungency. It is used in treating nerve pain. ]on flu and flu-like symptoms.