Does allegra (fexofenadine) d have the same ingredients as nyquil?

Not really: Allegra d contains fexofenadine and pseudo ephedrine, (ephedrine sulfate) which are a long acting or second generation anti-histamine and a vasoconstrictor. Depending on what type of nyquil it is, it usually contains a first generation anti-histamine, a cough suppression and / or acetaminophen, which is a pain reliever and anti-pyretic or fever reliever medication. They are both used for cold-like symptoms.