Yes you can but go out and get some pro biotics (Good bacteria) and pre biotics (Food for the good Bactera) and take them while using the meds and as well for atleast a month after you are done this meds. penicillin kills not only the bad bacteria but also the good ones that help you digest food, fight off infections, keep you smelling fresh when you swet ect ect....if you dont do this then you will find you wont digest good as well, you will have stinky shitts, your swet might smell more than normal, less nrg, ect ect.

Somthing that the docs never tell ya!

Oh and make sure that they are refrigerated when you buy them and after you buy them! keep them alive.