I've used the Z-Pac often over the years for sinus infections since I'm allergic to penicillin.. I've never noticed any side effects before. This time my Sinus Infection was bad and I did let it go longer than I should have.. But why on day 2 am I overly exhausted this time?
ABC; just because you have used the Z-PAK before does not mean that it is going to feel the same way each time. It can depend on many different things you're worn down system breaking it down in you blood and the Infection being worse than other times. There are many reasons and many of them are not just the medication but how you and your body are breaking it down. Such as your body has been fighting this longer on its own and you're warned down some. all of this is pretty common and then other times you won't even notice your taking it and wonder if it's even working. Have a great day.
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