Thank you, Mark, for your input!
Here is a dosage on my nyquil pills:
Acetaminophen 325 mg (Pain reliever/fever reducer)
Dextromethorphan HBr 15 mg (Cough suppressant)
Doxylamine succinate 6.25 mg (Antihistamine)
I took 500 mg of tylenol before. So, I think, it's safe to take it since it's below 1000. That's probably why husband told me it's safe. I should have listened, but better safe than sorry
Ok, I can't handle any more of the screen time. Thank you all again!