Zyrex is a prescription drug, available for use as Liquid. Secondary and off-label uses of Zyrex have also been mentioned below.

The correct dosage of Zyrex depends on the patient's age, gender, and medical history. Individual symptoms and route of administration also determines the right dosage. Detailed information has been provided in the dosage section.

The side effects typically associated with Zyrex include Constipation, Heartburn, Nausea or vomiting. Besides the aforementioned side effects, there are other adverse effects of Zyrex as well, which are listed below. Usually, these side effects of Zyrex go away soon, and do not persist beyond the duration of the treatment. If, however, they worsen or do not go away, please speak with your physician.

In addition, Zyrex's effect is Moderate during pregnancy and Moderate for lactating mothers. It is important to know if Zyrex has any effect on the kidney, liver and heart. Information on such adverse effects, if any, has been given in the Zyrex related warnings section.

Zyrex can cause adverse effects in certain medical conditions. It is strongly recommended to avoid Zyrex in conditions like Gastrointestinal Bleeding, Asthma, Smoking Addiction. Other conditions have been mentioned below in the Zyrex contraindications section.

Drug interactions for Zyrex have been reported in the medical literature. See below for a complete list.

In addition to these precautions, you may also note that Zyrex is safe while driving, and is is addictive in nature.