Nyquil is made up of various Lively elements. Doxylamine is the main component that causes sleepiness. But Nyquil has other ingredients like… Buy on Amazon • Diphenhydramine. As many of us know, there are actually anti-histamines that make us drowsy, and Some others that don't. In dogs, Benadryl can cause https://accidentliabilitysupport44665.activablog.com/32266426/a-simple-key-for-canine-anxiety-relief-unveiled