A member asked:

The dr. told me that i was on the cusp of pneumonia.he gave me a 5 day z pac.how long does the z pac continue after you've taken the last pill?

A doctor has provided 1 answer
Dr. Larry Maturani answered

Specializes in Internal Medicine

Weeks: Azithromycin which is the drug that you are taking has a half life of around 70 hrs. That means that if you take 250mg of this tablet once, in 70 hrs you still will have 125 mgs remaining in your system and this is after you may as well say three days. But, you took it for five days so you can easily see that the medication will be around for awhile.

Answered 6/24/2014

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