"Good for fever"? Only ignorant consumers would attempt to counteract the body's very own defenses against infection and disease.

A fever is not dangerous within normal parameters, except for being dangerous to the virus and bacteria that threaten the body. Your body runs a fever because it engages in a battle to the death with these microbes.

If you defeat the body's own defenses by lowering the fever, for example if you are a nervous mother who hates her baby's fussing, or if you're hospitalized and the nurses are laser-focused on "number go down" treatments, then you can expect to be ravaged by the contagion for much longer than expected.