The correct dosage of Z-Pak depends on the kind of illness a person has. The dosage can range from one dose every day for five days to a single large dose called megadose, according to Drug Watch. More » Health Medications & Vitamins

The brand name drug Zithromax Z-Pak is known to treat a broad range of bacterial infections, including sinus infections. This medication has the generic name azithromycin, notes WebMD. More » Health Medications & Vitamins

According to WebMD, a bacteria-fighting antibiotic known as azithromycin is commonly referred to as the Z-Pak by patients and health care professionals. This prescription drug is typically taken once per day and cannot e... More » Health Medications & Vitamins

According to WebMD, Z-Pak is a macrolide-type antibiotic that is used to treat strep throat and numerous other bacterial infections. It is not effective against viral infections such as the flu and common cold. More » Health Medications & Vitamins

Some of the more common side effects of Z-Pak include upset stomach, abdominal pain, diarrhea and vomiting, warns WebMD. In rare instances, it can cause serious problems, including a fast or irregular heartbeat. Other si... More » Health Medications & Vitamins Side Effects

It is best to avoid alcohol while taking a Z-Pak, according to Healthline. Azithromycin, the antibiotic in a Z-Pak, is filtered from the body through the liver. Drinking alcohol while taking this medication puts extra st... More »

According to MedlinePlus, a Z-Pak contains azithromycin tablets and is used to treat certain bacterial infections, including bronchitis, pneumonia, sexually transmitted diseases, and infections of the ears, lungs, sinuse... More »