Z-pack is a prescription medication that typically requires a daily, single dose. The dosage for strep throat in adults is 500 milligrams (mg) on the first day and 250 mg daily for the following 4 ...

Z-Pack is a form of Zithromax, ... Each Z-Pack contains six 250-milligram (mg) ... but it can start to relieve your sore throat and other symptoms on the first day you take it.