Hello Dr. Rynne, My wife is currently between chemo teatments (every three weeks) for stage IV lung...This week, she s contracted a chest cold, with which she treated for two days with Mucinex max strength, which may have been too strong, causing dryness, soreness of sinus & throat, but did start to break up chest congestion. My question is, is Nyquil (for cough / congestion) ok for her to take before bedtime rest ? Than You, In Advance....Tom