Reducing fever, especially with NSAIDs has shown to lead to a higher mortality rate, it suppresses your immune response. Moderate to high fever is good and is natural response to infection Organ damage needs a very high temperature 106+. If you are below this, taking fever reducers is not a good thing to help you recover from an infection. Fever reducers resulted in a 5 percent mortality increase in flu. France has warned of a link between higher mortality in young adults taking anti-febriles and Coronavirus.
https://www.ncbi.nlm.nih.gov › pmc
The effect on mortality of antipyretics in the treatment of influenza infection: systematic ...
Paracetamol (acetaminophen/Tylenol) is not an NSAID, is not an anti-inflammatory and there's no evidence that it has any negative effect on outcomes. You're mixing it up with ibuprofen (Advil), which is an NSAID and may result in worse outcomes.
The study linked systematically reviewed animal models of influenza and and antipyretic use and found that aspirin, paracetamol and diclofenac increased mortality.
They lamented that there weren’t any good trials in humans available to review, so the impacts of antipyretics on influenza is still an open question, but the animal models aren’t looking promising.
In other words: should you take antipyretics for the flu? Dunno for sure, but I’ll avoid it based on the data that we do have.
https://www.ncbi.nlm.nih.gov › pmc The effect on mortality of antipyretics in the treatment of influenza infection: systematic ...