One or two days for you to start feeling better. With PenV-K you will notice a difference within hours.

take 2 caps ( = 500 mg) on the first day and then

1 cap (250mg) on each succeding day ( for a total of

6 to 7 days)

any antibiotic should take effect after 48 hours of

begining of the treatment ( if chosen properly)

Azithromycin is useful for Upper resp. tract infections

(eg. pharyngitis, sinusitis,...)



take care, and don't self-medicate!

I really like Z-pak I usually get better by second day!!!

You cannot spread the infection after 24 hours. I have felt better within 12 hours...I have remained ill on it...it depends!

Usually by the third day you should feel noticeably better. I took it while pregnant for a very bad chest and head cold, it only cleared it up about 80% but usually z-paks work really well.

1-2 days

Ahh, the ever so famous Z-Pak. It takes 24 hours for it to completely travel through your body and attack the infection. When you hit the 24 hour mark you will no longer be contagious, Hope this helps.

I guess it depends on what you are taking it for, but by the time you take your second dose you should be feeling better. I take 5 day z-pack all the time for tooth infections from sinuses, and the biggest difference usually comes after i'm done, since it continues to work for 14 days.

According to the CPS (Compendium of Pharma specialties), Zithromax achieves peak levels in your blood 2.5 hours after taking an oral dose. Usually within 1 or at max 2 days, you should feel better.

Hope this helps ;and remember, take ALL of the drug--do not stop if you feel better. That way, you'll ensure that all toxic levels of bacteria are killed off and the infection won't recur.

Merry Christmas!

It should begin to work immediately, but you probably won't notice a big difference for a day or two.