Fever reducers treat a symptom, not the cause of an illness, and lowering your temperature may get in the way of your body's normal defenses and actually prolong the sickness. Generally, a fever on its own isn't dangerous and there's no real need to treat it.

Is it better to take fever reducer or not?

A. The best evidence suggests that there is neither harm nor benefit to treating a fever with fever-reducing medications like acetaminophen or ibuprofen. Hundreds of millions of years ago, animals developed fever as an evolutionary response to infection.

What is the most effective fever reducer?

Best fever reducer adults: Acetaminophen (Tylenol) Best fever reducer for infants: Infant liquid acetaminophen (Tylenol) Best fever reducer for children: Ibuprofen (Motrin, Advil)