Schedule 4 Controlled Substance
The medication, Ambien, has gained wide popularity as of late because of its effectiveness in treating a rampant problem in today's society: insomnia. Also its generic name, Ambien contains a highly addictive active ingredient called zolpidem tartrate. Even though doctors have prescribed zolpiderm because it is a quick acting sedative, its addictive nature has earned it a schedule 4 controlled substance classification. Exclusive of any other medications consumed, Ambien should be taken cautiously in accordance with a medical doctor's exact order as prescribed.
You will find that medical doctors typically prescribe Ambien for short term use over 2 to 6 weeks. As with other medications, you will find that Ambien can manifest side effects that span the gauntlet of mild to severe. Mild reactions to Ambien include: amnesia, nausea, blurry vision, forgetfulness, lightheadedness, dizziness, muscle pain, and sore throat. Severe reactions to Ambien include: restlessness, aggression, suicidal feelings and ideation, hallucinations, and depression. While mild side effects will generally come and go with little worry, severe side effects of Ambien should not be taken lightly. In those particular cases, medical help should be sought immediately.
Different than Nyquil
While Dayquil has many of the same components as Nyquil, many people choose Dayquil because it's lack of histamine makes it a suitable choice for those who hope to gain the benefits of Nyquil but during the day. Dayquil's active ingredient components will help to control pain (Acetominophen, an analgesic), suppress one's cough reflex (Dextromethrophan), and decrease nasal and sinus congestion by narrowing nasal and sinus passages (Pseudoephedrine hydrochloride).
Central Nervous System Effects
With regards to impact on one's central nervous system, both Ambien and Nyquil act on the central nervous system, but in different ways. As mentioned above, pain and cough are effectively suppressed by the acitominophen and dextromethrophan ingredient components in Dayquil. On the other side, Ambien acts on your central nervous system in a sedative-like fashion: helping you fall asleep because of the effects of zolpidem tartrate.
Between Ambien and Dayquil
As demonstrated in the last paragraph of this InfoBarrel article, Ambien and Dayquil both exercise effects on a human's central nervous system. Along with Ambien's sedative effects also comes the possibility for those effects to be enhanced when it is taken along with any central nervous system depressant (even beyond Dayquil). To this date, no interaction has been reported between the two medications, however, one should be weary to discount the possibility. The sedative effect of Ambien can be enhanced by any over-the-counter drug that suppresses the central nervous system.