In the US there is only one facility (that I am aware of) in TN that makes Amoxicillin.
Amoxicillin is by far the most common Rx I write in my practice.
For people allergic we often use Clindamycin, but it is rough on the GI tract and way more apt to cause C diff. Starting to use Azithromycin (Z-pack) for people allergic to Amox.