How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask pharmacydoc Your Own Question
pharmacydoc, Pharmacist
Category: Pharmacy
Satisfied Customers: 411
Experience:  Educator with hospital and retail experience.
Type Your Pharmacy Question Here...
pharmacydoc is online now
A new question is answered every 9 seconds

How is z-pack in your system after the last dose of the 5

Resolved Question:

How long is z-pack in your system after the last dose of the 5 day prescription is finished and can you continually take z-packs, thre five prescriptions in a row? Thanks.
Submitted: 5 years ago.
Category: Pharmacy
Expert:  pharmacydoc replied 5 years ago.
pharmacydoc :

A Z-PAK contains a macrolide antibotic called azithromycin. After the last dose, the medication will remain in your system for about 360 hours (15 days). That doesn't mean it is at full strength during this period. 72 hours (3 days) after the last doses, half of the medication is out of your system; 3 days after that half of the half is out and so on.

pharmacydoc :

I am not sure about what you are asking in the second part of your question. If your asking whether azithromycin can be taken for more than 5 days, the answer is yes depending on the indication for which your doctor presribed it. That being said, unless advised otherwise by your doctor, you probably wouldn't take two pills of the second Z-PAK on the first day like you did for the first.


Thnk you

pharmacydoc and other Pharmacy Specialists are ready to help you