Nyquil is a commercial drug that is prescribed in the form of Syrup. Allergic Rhinitis, Cough are some of its major therapeutic uses. Secondary and off-label uses of Nyquil have also been mentioned below.

The optimal dosage of Nyquil is largely dependent on the individual's body weight, medical history, gender and age. Dosage also depends on the route of administration and your chief complaint for which the drug is prescribed. Detailed information has been provided in the dosage section.

Common side effects of Nyquil include Nausea or vomiting, Abdominal Pain, Drowsiness. Normally, these side effects of Nyquil are not long lasting and go away when the treatment is finished. Please speak with your doctor if these side effects worsen or persist for a longer duration.

Nyquil's effect during pregnancy is Moderate and Moderate while nursing. It is important to know if Nyquil has any effect on the kidney, liver and heart. Information on such adverse effects, if any, has been given in the Nyquil related warnings section.

The section on Nyquil contraindications lists all such conditions.

Besides this, Nyquil may also have severe interaction with some medicines. See below for a complete list.

In addition to these precautions, you may also note that Nyquil is not safe while driving, and is is not addictive in nature.